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Teenagere i dag er mere barnslige end nogensinde, ifølge videnskaben

Teenagere i dag er mere barnslige end nogensinde, ifølge videnskaben


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Et studie af 8,3 millioner teenagere blev netop frigivet af San Diego State University, der tyder på, at nutidens unge tager meget længere tid at vokse op. Færre teenagere har job, færre kan køre, og færre drikker og have sex.

"Jeg havde set trendstykker, der karakteriserede disse tendenser som, at teenagere var mere 'dydige', når de talte om fald i sex eller alkohol, eller at teenagere var 'dovne', når de talte om fald i arbejdet," Jean Twenge, medforfatter til Studiet, fortalte Seeker. "Men jeg troede, at begge savnede det store billede - at teenagere tog længere tid at vokse op."

Selvom teenagere ikke kan afskrive forsikringsbetalinger og kreditkortregninger, kan de det udsætte voksenalderen - og først så det ud til, at teenagere faktisk brugte denne ungdomstid klogere end nogensinde. Hos mennesker og andre dyrearter er forsinket udvikling forbundet med en større andel af tid brugt på at lære. Bruger nutidens teenagere i stedet for at arbejde og drikke mere tid på at kigge på deres lektier?

Desværre understøttede dataene ikke en nyfunden hengivenhed til formel uddannelse - den tid, der er brugt på at lave lektier og fritidsaktiviteter, har faktisk er faldet blandt ottende og tiende klasse og forblev stillestående for gymnasieelever og universitetsstuderende. Hvis ikke lektier, hvad så? Studieforfatterne var forundrede. Teenagere må bruge deres tid et andet sted.

Twenge spekulerer i, at tiden kunne bruges online. Hun forklarer, at computere og smartphones "sandsynligvis fremskyndede nogle af trenderne i de sidste 10 år, da mange af dem involverer at komme ud af huset, hvilket nu er mindre nødvendigt for at kommunikere med venner." At spille flip cup og tag din date med i biografen, du er nødt til at stå af din stue sofa. Men at hænge ud med venner kræver ikke længere at gå udenfor. Teenagere får måske ikke job, har sex og deltager i anden voksen adfærd, simpelthen fordi de ikke skal.

Twenge og hendes kollega Heejung Park opdagede også, at voksne aktiviteter var mindre almindelige i tidsaldre med tendenser af mindre familiestørrelser, højere medianindkomster og færre sygdomsrelaterede dødsfald. Uddannelsens varighed reducerede også hyppigheden af ​​voksne aktiviteter.

Man kan argumentere for, at færre voksne aktiviteter som at drikke, medicin eller sex kan føre til en sundere livsstil. Selvom forfatterne af undersøgelsen valgte ikke at gå den vej, her er 10 måder, nutidens årtusinder er sundere end deres forældre.


5 grunde til, at teenagere handler, som de gør

Alle teenagere tager dumme risici, som de en dag ser tilbage på og spekulerer på, hvad pokker de tænkte. Men undersøgelser har fundet ud af, at det ikke er fordi teenagere ikke tænker på de involverede risici - det er fordi de tænker på dem længere end voksne.

Ja, det er kontraintuitivt. Men tænk på det sådan: Hvis du er på slankekur og ser et stykke lækker chokoladekage, er det mere sandsynligt, at du spiser det, hvis du bare kigger på det, husker du forsøger at spise sundt og går væk, eller hvis sidder du der og tænker over fordele og ulemper ved at spise det? Sidstnævnte, naturligvis.

Det er det samme med teenagehjernen. Vores hjerner tager meget længere tid at danne fuldstændigt, end man tidligere troede. I teenagere er frontallappen (hvor vores beslutningstagning sker) ikke så forbundet med resten af ​​hjernen, som den er senere i livet. Det betyder, at teenagere bogstaveligt talt ikke kan træffe en beslutning så hurtigt som en voksen. Teenagere tager i gennemsnit 170 millisekunder længere at gå over konsekvenserne af en beslutning, hvilket igen gør dem mere tilbøjelige til at beslutte, at risikoen er det værd.

2. At give efter for gruppepres

Tilføjelse af venner til blandingen gør det endnu sværere for teenagere at undgå at tage risici.

Voksne undrer sig over, hvorfor deres børns venner kan påvirke dem så meget. Det skyldes, at når du først er voksen, er din hjerne helt bogstaveligt vokset ud af det.

En undersøgelse ved hjælp af MR -scanninger på voksne og teenagere viste, at deres hjerner reagerede meget forskelligt på nærvær af venner, når de tog en beslutning. Det fandt ud af, at teenagere, der ikke ville tage risici, alene eller sammen med en voksen, var langt mere tilbøjelige til at tage risici, når deres venner så på. Scanningerne viste, at teenagernes hjernes belønningscenter blev meget mere aktivt i selskab med deres jævnaldrende. Hos universitetsstuderende og voksne forblev belønningscentrets aktivitet imidlertid på et konstant niveau, uanset hvem der så på.

Det betyder, at teenagere, når de bruger den lille smule ekstra tid på at beslutte, hvilket valg de skal træffe, også kæmper mod det overvældende interne drev, der fortæller os at gøre ting, der føles godt. Efterhånden som hjernen udvikler sig i voksenalderen, slutter den forbindelse imidlertid, og vi ender med at få ingen ekstra god følelse af at tage risici foran vores venner.

3. Manglende koncentration

Mens teenagere måske ligner mere voksne end børn, ligner deres hjerner for et neuroforsker et barns. Det er en af ​​grundene til, at teenagere pludselig begynder at opføre sig som småbørn igen omkring 14 år. Mens deres kroppe ældes, omarrangerer deres hjerne sig selv på en måde, der midlertidigt får den til at handle på samme måde, som den gjorde, da de var yngre.

Da forskere kiggede på, hvordan teenagers hjerner fungerede, mens de blev distraheret under en tildelt opgave, fandt de en stor mængde aktivitet i den darn frontallapp igen, langt mere end de ville hos en voksen. Teenagere har for meget aktivt gråt stof i det område, noget der falder, når vi bliver ældre. Det betyder, at deres hjerne forsøger at tage imod og behandle alt, hvad der foregår omkring den, bogstaveligt talt overbelaste dem. Den mere strømlinede voksne hjerne fungerer mere effektivt, hvilket gør det meget lettere at koncentrere sig om én ting.

Men hvis du er i tyverne og har følt kækken indtil dette tidspunkt, er det vigtigt at bemærke, at denne kaotiske hjerne -makeup først falder til ro i begyndelsen af ​​trediverne.

4. Alt for følelsesmæssigt

Hvis teenagere ser ud til at være ligeglade med andre menneskers følelser eller ser ud til at vende ud over ingenting, er det måske ikke fordi de er dramadronninger. Undersøgelser har fundet ud af, at teenagere har meget sværere ved at fortolke vokalbøjning og ansigtsudtryk fra andre mennesker, og derfor reagerer de nogle gange irrationelt på følelsesmæssige situationer.

En undersøgelse viste teenagere og voksne billeder som dette:

Hvilken følelse tror du, den kvinde føler? Hvis du ikke er teenager, har du sandsynligvis svaret på frygt, ligesom hver eneste voksen i undersøgelsen gjorde. Men mens nogle teenagere identificerede frygt, så 50% af dem vrede eller endda chok. Alle deltagerne blev tilsluttet MR -maskiner, mens de kiggede på disse billeder, og en analyse af scanninger viste, at voksne og teenagere brugte to helt forskellige dele af deres hjerner til at træffe en beslutning om, hvilke følelser folk følte.

Teenagerne brugte en del af hjernen kaldet amygdala, som stort set styrer følelser, mens den mest aktive del af den voksne hjerne var den del, der kontrollerede logik og fornuft. Det betyder, at hvis du udtrykker en følelse - f.eks. Skuffelse - har en teenagers hjerne 50% chance for at misforstå den som en anden følelse, som vrede. Da den følelsesmæssige del af deres hjerne allerede er aktiv fra at tage den (forkerte) dom, bliver de mere tilbøjelige til at reagere irrationelt og over toppen.

5. Bliver Dummere

Forældre til teenagere spekulerer ofte på, hvad der skete med det lyse barn, de plejede at have. Hvordan kan nogen gå fra at få A til at få C, når de ser ud til at udføre det samme arbejde? Endnu en gang er ændringer i hjernen skyld. Selv om fordelene ved IQ -test kan diskuteres, plejede forskere at tro, at IQ forblev den samme i løbet af ens levetid. Nu viser det sig, at antallet kan svinge meget i ungdomsårene.

Alt det ekstra grå stof, vi talte om, begynder at dø, når du bliver ældre. Når du er ung, har de grå ting masser af ekstra synapser, der hjælper din hjerne med at lagre og behandle information. Men efterhånden som du bliver ældre, begynder din hjerne at dræbe de bits, der ikke bliver brugt så ofte. Forskere plejede at tro, at der kun var en stor "stigning" i synapsen "beskæring", da vi var børn, men hjernescanninger af teenagere har vist, at en lige så stor sker i begyndelsen af ​​ungdomsårene.

Dette giver mening biologisk, hvorfor skulle din hjerne spilde energi på at huske ting, der ikke er særlig nødvendige for dit daglige liv? Det er en af ​​grundene til, at yngre børn kan lære et andet sprog meget hurtigere end voksne, at de har flere synapser til at gemme disse oplysninger. Og hvis de bliver ved med at tale det andet sprog ofte nok, vil de huske det resten af ​​deres liv.

Men hvis der er et emne, de ikke koncentrerede sig så hårdt om, som matematik, begynder de pludselig at glemme ting, de plejede at vide, fordi hjernen sletter disse oplysninger.
* * *
På dette tidspunkt er vi chokerede over, at nogen når 20 år. Eller som Mark Twain sagde: ”Når et barn fylder 12 år, skal det opbevares i en tønde og fodres gennem hullet, indtil det når 16. på hvilket tidspunkt du tilslutter hullet. "


5 grunde til, at teenagere handler, som de gør

Alle teenagere tager dumme risici, som de en dag ser tilbage på og spekulerer på, hvad pokker de tænkte. Men undersøgelser har fundet ud af, at det ikke er fordi teenagere ikke tænker på de involverede risici - det er fordi de tænker på dem længere end voksne.

Ja, det er kontraintuitivt. Men tænk på det sådan: Hvis du er på slankekur og ser et stykke lækker chokoladekage, er det mere sandsynligt, at du spiser det, hvis du bare kigger på det, husker du forsøger at spise sundt og går væk, eller hvis sidder du der og tænker over fordele og ulemper ved at spise det? Sidstnævnte, naturligvis.

Det er det samme med teenagehjernen. Vores hjerner tager meget længere tid at danne fuldstændigt, end man tidligere troede. I teenagere er frontallappen (hvor vores beslutningstagning sker) ikke så forbundet med resten af ​​hjernen, som den er senere i livet. Det betyder, at teenagere bogstaveligt talt ikke kan træffe en beslutning så hurtigt som en voksen. Teenagere tager i gennemsnit 170 millisekunder længere at gå over konsekvenserne af en beslutning, hvilket igen gør dem mere tilbøjelige til at beslutte, at risikoen er det værd.

2. At give efter for gruppepres

Tilføjelse af venner til blandingen gør det endnu sværere for teenagere at undgå at tage risici.

Voksne undrer sig over, hvorfor deres børns venner kan påvirke dem så meget. Det skyldes, at når du først er voksen, er din hjerne helt bogstaveligt vokset ud af det.

En undersøgelse ved hjælp af MR -scanninger på voksne og teenagere viste, at deres hjerner reagerede meget forskelligt på nærvær af venner, når de tog en beslutning. Det fandt ud af, at teenagere, der ikke ville tage risici, alene eller sammen med en voksen, var langt mere tilbøjelige til at tage risici, når deres venner så på. Scanningerne viste, at teenagernes hjerners belønningscenter blev meget mere aktivt i selskab med deres jævnaldrende. Hos universitetsstuderende og voksne forblev belønningscentrets aktivitet imidlertid på et konstant niveau, uanset hvem der så på.

Det betyder, at teenagere, når de bruger den lille smule ekstra tid på at beslutte, hvilket valg de skal træffe, også kæmper mod det overvældende interne drev, der fortæller os at gøre ting, der føles godt. Efterhånden som hjernen udvikler sig i voksenalderen, slutter denne forbindelse imidlertid, og vi ender med at få ingen ekstra god følelse af at tage risici foran vores venner.

3. Manglende koncentration

Mens teenagere måske ligner mere voksne end børn, ligner deres hjerner for et neuroforsker et barns. Det er en af ​​grundene til, at teenagere pludselig begynder at opføre sig som småbørn igen omkring 14 år. Mens deres kroppe ældes, omarrangerer deres hjerne sig selv på en måde, der midlertidigt får den til at handle på samme måde, som den gjorde, da de var yngre.

Da forskere kiggede på, hvordan teenagers hjerner fungerede, mens de blev distraheret under en tildelt opgave, fandt de en stor mængde aktivitet i den darn frontallapp igen, langt mere end de ville hos en voksen. Teenagere har for meget aktivt gråt stof i det område, noget der falder, når vi bliver ældre. Det betyder, at deres hjerne forsøger at tage til sig og behandle alt, hvad der foregår omkring den, bogstaveligt talt overbelaste dem. Den mere strømlinede voksne hjerne fungerer mere effektivt, hvilket gør det meget lettere at koncentrere sig om én ting.

Men hvis du er i tyverne og har følt kækken indtil dette tidspunkt, er det vigtigt at bemærke, at denne kaotiske hjerne -makeup først falder til ro i begyndelsen af ​​trediverne.

4. Alt for følelsesmæssigt

Hvis teenagere ser ud til at være ligeglade med andre menneskers følelser eller ser ud til at vende ud over ingenting, er det måske ikke fordi de er dramadronninger. Undersøgelser har fundet ud af, at teenagere har meget sværere ved at tolke stemmebøjning og ansigtsudtryk korrekt fra andre mennesker, og derfor reagerer de nogle gange irrationelt på følelsesmæssige situationer.

En undersøgelse viste teenagere og voksne billeder som dette:

Hvilken følelse tror du, den kvinde føler? Hvis du ikke er teenager, har du sandsynligvis svaret på frygt, ligesom hver eneste voksen i undersøgelsen gjorde. Men mens nogle teenagere identificerede frygt, så 50% af dem vrede eller endda chok. Alle deltagerne blev tilsluttet MR -maskiner, mens de kiggede på disse billeder, og en analyse af scanninger viste, at voksne og teenagere brugte to helt forskellige dele af deres hjerner til at træffe en beslutning om, hvilke følelser folk følte.

Teenagerne brugte en del af hjernen kaldet amygdala, som stort set styrer følelser, mens den mest aktive del af den voksne hjerne var den del, der kontrollerede logik og fornuft. Det betyder, at hvis du udtrykker en følelse - f.eks. Skuffelse - har en teenagers hjerne 50% chance for at misforstå den som en anden følelse, som vrede. Da den følelsesmæssige del af deres hjerne allerede er aktiv fra at tage den (forkerte) dom, bliver de mere tilbøjelige til at reagere irrationelt og over toppen.

5. Bliver Dummere

Forældre til teenagere spekulerer ofte på, hvad der skete med det lyse barn, de plejede at have. Hvordan kan nogen gå fra at få A til at få C, når de ser ud til at udføre det samme arbejde? Endnu en gang er ændringer i hjernen skyld. Selv om fordelene ved IQ -test kan diskuteres, plejede forskere at tro, at IQ forblev den samme i løbet af ens levetid. Nu viser det sig, at antallet kan svinge meget i ungdomsårene.

Alt det ekstra grå stof, vi talte om, begynder at dø, når du bliver ældre. Når du er ung, har de grå ting masser af ekstra synapser, der hjælper din hjerne med at lagre og behandle information. Men som du bliver ældre, begynder din hjerne at dræbe de bits, der ikke bliver brugt så ofte. Forskere plejede at tro, at der kun var en større "stigning" i synapsen "beskæring", da vi var børn, men hjernescanninger af teenagere har vist, at en lige så stor sker i begyndelsen af ​​ungdomsårene.

Dette giver mening biologisk, hvorfor skulle din hjerne spilde energi på at huske ting, der ikke er særlig nødvendige for dit daglige liv? Det er en af ​​grundene til, at yngre børn kan lære et andet sprog meget hurtigere end voksne, at de har flere synapser til at gemme disse oplysninger. Og hvis de bliver ved med at tale det andet sprog ofte nok, vil de huske det resten af ​​deres liv.

Men hvis der er et emne, de ikke koncentrerede sig så hårdt om, som matematik, begynder de pludselig at glemme ting, de plejede at vide, fordi hjernen sletter disse oplysninger.
* * *
På dette tidspunkt er vi chokerede over, at nogen når 20 år. Eller som Mark Twain sagde: ”Når et barn fylder 12 år, skal det opbevares i en tønde og fodres gennem hullet, indtil det når 16. på hvilket tidspunkt du tilslutter hullet. "


5 grunde til, at teenagere handler, som de gør

Alle teenagere tager dumme risici, som de en dag ser tilbage på og spekulerer på, hvad pokker de tænkte. Men undersøgelser har fundet ud af, at det ikke er fordi teenagere ikke tænker på de involverede risici - det er fordi de tænker på dem længere end voksne.

Ja, det er kontraintuitivt. Men tænk på det sådan: Hvis du er på slankekur og ser et stykke lækker chokoladekage, er det mere sandsynligt, at du spiser det, hvis du bare kigger på det, husker du forsøger at spise sundt og går væk, eller hvis sidder du der og tænker over fordele og ulemper ved at spise det? Sidstnævnte, naturligvis.

Det er det samme med teenagehjernen. Vores hjerner tager meget længere tid at danne fuldstændigt, end man tidligere troede. I teenagere er frontallappen (hvor vores beslutningstagning sker) ikke så forbundet med resten af ​​hjernen, som den er senere i livet. Det betyder, at teenagere bogstaveligt talt ikke kan træffe en beslutning så hurtigt som en voksen. Teenagere tager i gennemsnit 170 millisekunder længere at gå over konsekvenserne af en beslutning, hvilket igen gør dem mere tilbøjelige til at beslutte, at risikoen er det værd.

2. At give efter for gruppepres

Tilføjelse af venner til blandingen gør det endnu sværere for teenagere at undgå at tage risici.

Voksne undrer sig over, hvorfor deres børns venner kan påvirke dem så meget. Det skyldes, at når du først er voksen, er din hjerne helt bogstaveligt vokset ud af det.

En undersøgelse med MR -scanninger på voksne og teenagere viste, at deres hjerner reagerede meget forskelligt på nærvær af venner, når de tog en beslutning. Det fandt ud af, at teenagere, der ikke ville tage risici, alene eller sammen med en voksen, var langt mere tilbøjelige til at tage risici, når deres venner så på. Scanningerne viste, at teenagernes hjerners belønningscenter blev meget mere aktivt i selskab med deres jævnaldrende. Hos universitetsstuderende og voksne forblev belønningscentrets aktivitet imidlertid på et konstant niveau, uanset hvem der så på.

Det betyder, at teenagere, når de bruger den lille smule ekstra tid på at beslutte, hvilket valg de skal træffe, også kæmper mod det overvældende interne drev, der fortæller os at gøre ting, der føles godt. Efterhånden som hjernen udvikler sig i voksenalderen, slutter den forbindelse imidlertid, og vi ender med at få ingen ekstra god følelse af at tage risici foran vores venner.

3. Manglende koncentration

Mens teenagere måske ligner mere voksne end børn, ligner deres hjerner for et neuroforsker et barns. Det er en af ​​grundene til, at teenagere pludselig begynder at opføre sig som småbørn igen omkring 14 år. Mens deres kroppe ældes, omarrangerer deres hjerne sig selv på en måde, der midlertidigt får den til at handle på samme måde, som den gjorde, da de var yngre.

Da forskere kiggede på, hvordan teenagers hjerner fungerede, mens de blev distraheret under en tildelt opgave, fandt de en stor mængde aktivitet i den darn frontallapp igen, langt mere end de ville hos en voksen. Teenagere har for meget aktivt gråt stof i det område, noget der falder, når vi bliver ældre. Det betyder, at deres hjerne forsøger at tage imod og behandle alt, hvad der foregår omkring den, bogstaveligt talt overbelaste dem. Den mere strømlinede voksne hjerne fungerer mere effektivt, hvilket gør det meget lettere at koncentrere sig om én ting.

Men hvis du er i tyverne og har følt kækken indtil dette tidspunkt, er det vigtigt at bemærke, at denne kaotiske hjerne -makeup først falder til ro i begyndelsen af ​​trediverne.

4. Alt for følelsesmæssigt

Hvis teenagere ser ud til at være ligeglade med andre menneskers følelser eller ser ud til at vende ud over ingenting, er det måske ikke fordi de er dramadronninger. Undersøgelser har fundet ud af, at teenagere har meget sværere ved at fortolke vokalbøjning og ansigtsudtryk fra andre mennesker, og derfor reagerer de nogle gange irrationelt på følelsesmæssige situationer.

En undersøgelse viste teenagere og voksne billeder som dette:

Hvilken følelse tror du, den kvinde føler? Hvis du ikke er teenager, har du sandsynligvis svaret på frygt, ligesom hver eneste voksen i undersøgelsen gjorde. Men mens nogle teenagere identificerede frygt, så 50% af dem vrede eller endda chok. Alle deltagerne blev tilsluttet MR -maskiner, mens de kiggede på disse billeder, og en analyse af scanninger viste, at voksne og teenagere brugte to helt forskellige dele af deres hjerner til at træffe en beslutning om, hvilke følelser folk følte.

Teenagerne brugte en del af hjernen kaldet amygdala, som stort set styrer følelser, mens den mest aktive del af den voksne hjerne var den del, der kontrollerede logik og fornuft. Det betyder, at hvis du udtrykker en følelse - f.eks. Skuffelse - har en teenagers hjerne 50% chance for at misforstå den som en anden følelse, som vrede. Da den følelsesmæssige del af deres hjerne allerede er aktiv fra at tage den (forkerte) dom, bliver de mere tilbøjelige til at reagere irrationelt og over toppen.

5. Bliver Dummere

Forældre til teenagere spekulerer ofte på, hvad der skete med det lyse barn, de plejede at have. Hvordan kan nogen gå fra at få A til at få C, når de ser ud til at udføre det samme arbejde? Endnu en gang er ændringer i hjernen skyld. Selv om fordelene ved IQ -test kan diskuteres, plejede forskere at tro, at IQ forblev den samme i løbet af ens levetid. Nu viser det sig, at antallet kan svinge meget i ungdomsårene.

Alt det ekstra grå stof, vi talte om, begynder at dø, når du bliver ældre. Når du er ung, har de grå ting masser af ekstra synapser, der hjælper din hjerne med at lagre og behandle information. Men som du bliver ældre, begynder din hjerne at dræbe de bits, der ikke bliver brugt så ofte. Forskere plejede at tro, at der kun var en større "stigning" i synapsen "beskæring", da vi var børn, men hjernescanninger af teenagere har vist, at en lige så stor sker i begyndelsen af ​​ungdomsårene.

Dette giver mening biologisk, hvorfor skulle din hjerne spilde energi på at huske ting, der ikke er særlig nødvendige for dit daglige liv? Det er en af ​​grundene til, at yngre børn kan lære et andet sprog meget hurtigere end voksne, at de har flere synapser til at gemme disse oplysninger. Og hvis de bliver ved med at tale det andet sprog ofte nok, vil de huske det resten af ​​deres liv.

Men hvis der er et emne, de ikke koncentrerede sig så hårdt om, som matematik, begynder de pludselig at glemme ting, de plejede at vide, fordi hjernen sletter disse oplysninger.
* * *
På dette tidspunkt er vi chokerede over, at nogen når 20 år. Eller som Mark Twain sagde: ”Når et barn fylder 12 år, skal det opbevares i en tønde og fodres gennem hullet, indtil det når 16. på hvilket tidspunkt du tilslutter hullet. "


5 grunde til, at teenagere handler, som de gør

Alle teenagere tager dumme risici, som de en dag ser tilbage på og spekulerer på, hvad pokker de tænkte. Men undersøgelser har fundet ud af, at det ikke er fordi teenagere ikke tænker på de involverede risici - det er fordi de tænker på dem længere end voksne.

Ja, det er kontraintuitivt. Men tænk på det sådan: Hvis du er på slankekur og ser et stykke lækker chokoladekage, er det mere sandsynligt, at du spiser det, hvis du bare kigger på det, husker, at du prøver at spise sundt og gå væk, eller hvis sidder du der og tænker over fordele og ulemper ved at spise det? Sidstnævnte, naturligvis.

Det er det samme med teenagehjernen. Vores hjerner tager meget længere tid at danne fuldstændigt, end man tidligere troede. I teenagere er frontallappen (hvor vores beslutningstagning sker) ikke så forbundet med resten af ​​hjernen, som den er senere i livet. Det betyder, at teenagere bogstaveligt talt ikke kan træffe en beslutning så hurtigt som en voksen. Teenagere tager i gennemsnit 170 millisekunder længere at gå over konsekvenserne af en beslutning, hvilket igen gør dem mere tilbøjelige til at beslutte, at risikoen er det værd.

2. At give efter for gruppepres

Tilføjelse af venner til blandingen gør det endnu sværere for teenagere at undgå at tage risici.

Voksne undrer sig over, hvorfor deres børns venner kan påvirke dem så meget. Det skyldes, at når du er voksen, er din hjerne helt bogstaveligt vokset ud af den.

En undersøgelse ved hjælp af MR -scanninger på voksne og teenagere viste, at deres hjerner reagerede meget forskelligt på nærvær af venner, når de tog en beslutning. Det fandt ud af, at teenagere, der ikke ville tage risici, alene eller sammen med en voksen, var langt mere tilbøjelige til at tage risici, når deres venner så på. Scanningerne viste, at teenagernes hjerners belønningscenter blev meget mere aktivt i selskab med deres jævnaldrende. Hos universitetsstuderende og voksne forblev belønningscentrets aktivitet imidlertid på et konstant niveau, uanset hvem der så på.

Det betyder, at teenagere, når de bruger den lille smule ekstra tid på at beslutte, hvilket valg de skal træffe, også kæmper mod det overvældende interne drev, der fortæller os at gøre ting, der føles godt. Efterhånden som hjernen udvikler sig i voksenalderen, slutter den forbindelse imidlertid, og vi ender med at få ingen ekstra god følelse af at tage risici foran vores venner.

3. Manglende koncentration

Mens teenagere måske ligner mere voksne end børn, ligner en hjerneforsker deres hjerner et barns. Det er en af ​​grundene til, at teenagere pludselig begynder at opføre sig som småbørn igen omkring 14 år. Mens deres kroppe ældes, omarrangerer deres hjerne sig selv på en måde, der midlertidigt får den til at handle på samme måde, som den gjorde, da de var yngre.

Da forskere kiggede på, hvordan teenagers hjerner fungerede, mens de blev distraheret under en tildelt opgave, fandt de en stor mængde aktivitet i den darn frontallapp igen, langt mere end de ville hos en voksen. Teenagere har for meget aktivt gråt stof i det område, noget der falder, når vi bliver ældre. Det betyder, at deres hjerne forsøger at tage imod og behandle alt, hvad der foregår omkring den, bogstaveligt talt overbelaste dem. Den mere strømlinede voksne hjerne fungerer mere effektivt, hvilket gør det meget lettere at koncentrere sig om én ting.

Men hvis du er i tyverne og har følt kækken indtil dette tidspunkt, er det vigtigt at bemærke, at denne kaotiske hjerne -makeup ikke falder helt til ro i dine tidlige trediver.

4. Alt for følelsesmæssigt

Hvis teenagere ser ud til at være ligeglade med andre menneskers følelser eller ser ud til at vende ud over ingenting, er det måske ikke fordi de er dramadronninger. Undersøgelser har fundet ud af, at teenagere har meget sværere ved at tolke stemmebøjning og ansigtsudtryk korrekt fra andre mennesker, og derfor reagerer de nogle gange irrationelt på følelsesmæssige situationer.

En undersøgelse viste teenagere og voksne billeder som dette:

Hvilken følelse tror du, den kvinde føler? Hvis du ikke er teenager, har du sandsynligvis svaret på frygt, ligesom hver eneste voksen i undersøgelsen gjorde. Men mens nogle teenagere identificerede frygt, så 50% af dem vrede eller endda chok. Alle deltagerne blev tilsluttet MR -maskiner, mens de kiggede på disse billeder, og en analyse af scanninger viste, at voksne og teenagere brugte to helt forskellige dele af deres hjerner til at træffe en beslutning om, hvilke følelser folk følte.

Teenagerne brugte en del af hjernen kaldet amygdala, som stort set styrer følelser, mens den mest aktive del af den voksne hjerne var den del, der kontrollerede logik og fornuft. Det betyder, at hvis du udtrykker en følelse - f.eks. Skuffelse - har en teenagers hjerne 50% chance for at misforstå den som en anden følelse, som vrede. Da den følelsesmæssige del af deres hjerne allerede er aktiv fra at tage den (forkerte) dom, bliver de mere tilbøjelige til at reagere irrationelt og over toppen.

5. Bliver Dummere

Forældre til teenagere spekulerer ofte på, hvad der skete med det lyse barn, de plejede at have. Hvordan kan nogen gå fra at få A til at få C, når de ser ud til at udføre det samme arbejde? Endnu en gang er ændringer i hjernen skyld. Selv om fordelene ved IQ -test kan diskuteres, plejede forskere at tro, at IQ forblev den samme i løbet af ens levetid. Nu viser det sig, at antallet kan svinge meget i ungdomsårene.

Alt det ekstra grå stof, vi talte om, begynder at dø, når du bliver ældre. Når du er ung, har de grå ting masser af ekstra synapser, der hjælper din hjerne med at lagre og behandle information. Men efterhånden som du bliver ældre, begynder din hjerne at dræbe de bits, der ikke bliver brugt så ofte. Forskere plejede at tro, at der kun var en stor "stigning" i synapsen "beskæring", da vi var børn, men hjernescanninger af teenagere har vist, at en lige så stor sker i begyndelsen af ​​ungdomsårene.

Dette giver mening biologisk, hvorfor skulle din hjerne spilde energi på at huske ting, der ikke er særlig nødvendige for dit daglige liv? Det er en af ​​grundene til, at yngre børn kan lære et andet sprog meget hurtigere end voksne, at de har flere synapser til at gemme disse oplysninger. Og hvis de bliver ved med at tale det andet sprog ofte nok, vil de huske det resten af ​​deres liv.

Men hvis der er et emne, de ikke koncentrerede sig så hårdt om, som matematik, begynder de pludselig at glemme ting, de plejede at vide, fordi hjernen sletter disse oplysninger.
* * *
På dette tidspunkt er vi chokerede over, at nogen når 20 år. Eller som Mark Twain sagde: ”Når et barn fylder 12 år, skal det opbevares i en tønde og fodres gennem hullet, indtil det når 16. på hvilket tidspunkt du tilslutter hullet. "


5 grunde til, at teenagere handler, som de gør

Alle teenagere tager dumme risici, som de en dag ser tilbage på og spekulerer på, hvad pokker de tænkte. Men undersøgelser har fundet ud af, at det ikke er fordi teenagere ikke tænker på de involverede risici - det er fordi de tænker på dem længere end voksne.

Ja, det er kontraintuitivt. Men tænk på det sådan: Hvis du er på slankekur og ser et stykke lækker chokoladekage, er det mere sandsynligt, at du spiser det, hvis du bare kigger på det, husker du forsøger at spise sundt og går væk, eller hvis sidder du der og tænker over fordele og ulemper ved at spise det? Sidstnævnte, naturligvis.

Det er det samme med teenagehjernen. Vores hjerner tager meget længere tid at danne fuldstændigt, end man tidligere troede. I teenagere er frontallappen (hvor vores beslutningstagning sker) ikke så forbundet med resten af ​​hjernen, som den er senere i livet. Det betyder, at teenagere bogstaveligt talt ikke kan træffe en beslutning så hurtigt som en voksen. Teenagere tager i gennemsnit 170 millisekunder længere at gå over konsekvenserne af en beslutning, hvilket igen gør dem mere tilbøjelige til at beslutte, at risikoen er det værd.

2. At give efter for gruppepres

Tilføjelse af venner til blandingen gør det endnu sværere for teenagere at undgå at tage risici.

Voksne undrer sig over, hvorfor deres børns venner kan påvirke dem så meget. Det skyldes, at når du er voksen, er din hjerne helt bogstaveligt vokset ud af den.

En undersøgelse ved hjælp af MR -scanninger på voksne og teenagere viste, at deres hjerner reagerede meget forskelligt på nærvær af venner, når de tog en beslutning. Det fandt ud af, at teenagere, der ikke ville tage risici alene eller sammen med en voksen, var langt mere tilbøjelige til at tage risici, når deres venner så på. Skanningerne viste, at teenagernes hjerners belønningscenter blev meget mere aktivt i selskab med deres jævnaldrende. Hos universitetsstuderende og voksne forblev belønningscentrets aktivitet imidlertid på et konstant niveau, uanset hvem der så på.

This means that teens, when spending that tiny bit of extra time deciding what choice to make, are also fighting against the overwhelming internal drive that tells us to do things that feel good. As the brain develops in adulthood, however, that connection ends and we end up getting no extra good feeling from taking risks in front of our friends.

3. Lack of Concentration

While teens may look more like adults than kids, to a neuroscientist their brains resemble a child's. That’s part of the reason teens suddenly start acting like toddlers again around age 14. While their bodies are aging, their brain is rearranging itself in a way that temporarily makes it act the same way it did when they were younger.

When scientists looked at how teenagers’ brains functioned while they were distracted during an assigned task, they found a large amount of activity in that darn frontal lobe again, far more than they would in an adult. Teens have too much active grey matter in that area, something that decreases as we get older. This means their brain is trying to take in and process everything going on around it, literally overloading them. The more streamlined adult brain works more efficiently, making concentrating on one thing much easier.

But if you are in your twenties and have been feeling cocky up until this point, it’s important to note that this chaotic brain makeup doesn’t completely settle down until your early thirties.

4. Overly Emotional

If teens seem to not care about other people’s feelings or seem to flip out over nothing, it might not be because they are drama queens. Studies have found that teens have a much harder time correctly interpreting vocal inflection and facial expressions from other people, and so they sometimes react irrationally to emotional situations.

One study showed teens and adults pictures like this:

What emotion do you think that woman is feeling? If you’re not a teenager you probably answered fear, just like every single adult in the study did. But while some teens identified fear, 50% of them saw anger, or even shock. All of the participants were hooked up to MRI machines while they looked at these images, and an analysis of the scans showed that adults and teens used two completely different parts of their brains to come to a decision on what emotions the people were feeling.

The teens were using a part of the brain called the amygdala, which largely controls emotions, while the most active part of the adult brain was the part controlling logic and reason. That means that if you are expressing an emotion—say, disappointment—a teen’s brain has a 50% chance of misinterpreting it as a different emotion, like anger. Then, since the emotional part of their brain is already active from making that (incorrect) judgment, they become more likely to react irrationally and over the top.

5. Getting Dumber

Parents of teens often wonder what happened to the bright child they used to have. How can someone go from getting A's to getting C's when they seem to be doing the same amount of work? Once again, changes in the brain are to blame. While the merits of IQ tests are debatable, scientists used to think IQ stayed the same over one’s lifetime. Now it turns out that number can fluctuate widely in adolescence.

All the extra grey matter we talked about starts to die off as you get older. When you are young, that grey stuff has lots of extra synapses that help your brain store and process information. But as you age, your brain starts killing off the bits that don’t get used as often. Scientists used to think there was only one major “surge” of synapse “pruning” when we were children, but brain scans of teens have shown that one just as large happens at the beginning of adolescence.

This makes sense biologically why should your brain waste energy remembering things that aren’t very necessary to your day to day life? It’s one of the reasons that younger children can learn a second language much faster than adults they have more synapses to store that information. And if they keep speaking that second language often enough, they will remember it the rest of their lives.

But if there is a subject they didn’t concentrate so hard on, like math, suddenly they start forgetting things they used to know because the brain is deleting that information.
* * *
At this point, we’re shocked anyone makes it to age twenty. Or as Mark Twain said, “When a child turns 12, he should be kept in a barrel and fed through the bung hole, until he reaches 16 . at which time you plug the bung hole.”


5 Reasons Teenagers Act the Way They Do

All teenagers take stupid risks that they one day look back on and wonder what the heck they were thinking. But studies have found it is not because teens aren’t thinking about the risks involved—it’s because they think about them longer than adults.

Yes, that’s counter-intuitive. But think of it like this: If you are on a diet and see a piece of yummy chocolate cake, are you more likely to eat it if you just glance at it, remember you are trying to eat healthy, and walk away, or if you sit there and mull over the pros and cons of eating it? The latter, obviously.

It’s the same with the teen brain. Our brains take a lot longer to fully form than was previously thought. In teens, the frontal lobe (where our decision making happens) is not as connected to the rest of the brain as it is later in life. This means teens literally cannot come to a decision as fast as an adult. Teens take an average of 170 milliseconds longer to go over the consequences of a decision, which in turn makes them more likely to decide the risk is worth it.

2. Giving in to Peer Pressure

Adding friends to the mix makes it even harder for teens to avoid taking risks.

Adults wonder why their kids' friends can influence them so much. That’s because once you are an adult, your brain has quite literally grown out of it.

One study using MRI scans on adults and teens showed that their brains reacted very differently to the presence of friends when making a decision. It found that teens who would not take risks when alone or with an adult were far more likely to take risks when their friends were watching. The scans showed that the reward center of the teen brain became much more active in the company of their peers. In college students and adults, however, the reward center’s activity remained at a constant level no matter who was watching.

This means that teens, when spending that tiny bit of extra time deciding what choice to make, are also fighting against the overwhelming internal drive that tells us to do things that feel good. As the brain develops in adulthood, however, that connection ends and we end up getting no extra good feeling from taking risks in front of our friends.

3. Lack of Concentration

While teens may look more like adults than kids, to a neuroscientist their brains resemble a child's. That’s part of the reason teens suddenly start acting like toddlers again around age 14. While their bodies are aging, their brain is rearranging itself in a way that temporarily makes it act the same way it did when they were younger.

When scientists looked at how teenagers’ brains functioned while they were distracted during an assigned task, they found a large amount of activity in that darn frontal lobe again, far more than they would in an adult. Teens have too much active grey matter in that area, something that decreases as we get older. This means their brain is trying to take in and process everything going on around it, literally overloading them. The more streamlined adult brain works more efficiently, making concentrating on one thing much easier.

But if you are in your twenties and have been feeling cocky up until this point, it’s important to note that this chaotic brain makeup doesn’t completely settle down until your early thirties.

4. Overly Emotional

If teens seem to not care about other people’s feelings or seem to flip out over nothing, it might not be because they are drama queens. Studies have found that teens have a much harder time correctly interpreting vocal inflection and facial expressions from other people, and so they sometimes react irrationally to emotional situations.

One study showed teens and adults pictures like this:

What emotion do you think that woman is feeling? If you’re not a teenager you probably answered fear, just like every single adult in the study did. But while some teens identified fear, 50% of them saw anger, or even shock. All of the participants were hooked up to MRI machines while they looked at these images, and an analysis of the scans showed that adults and teens used two completely different parts of their brains to come to a decision on what emotions the people were feeling.

The teens were using a part of the brain called the amygdala, which largely controls emotions, while the most active part of the adult brain was the part controlling logic and reason. That means that if you are expressing an emotion—say, disappointment—a teen’s brain has a 50% chance of misinterpreting it as a different emotion, like anger. Then, since the emotional part of their brain is already active from making that (incorrect) judgment, they become more likely to react irrationally and over the top.

5. Getting Dumber

Parents of teens often wonder what happened to the bright child they used to have. How can someone go from getting A's to getting C's when they seem to be doing the same amount of work? Once again, changes in the brain are to blame. While the merits of IQ tests are debatable, scientists used to think IQ stayed the same over one’s lifetime. Now it turns out that number can fluctuate widely in adolescence.

All the extra grey matter we talked about starts to die off as you get older. When you are young, that grey stuff has lots of extra synapses that help your brain store and process information. But as you age, your brain starts killing off the bits that don’t get used as often. Scientists used to think there was only one major “surge” of synapse “pruning” when we were children, but brain scans of teens have shown that one just as large happens at the beginning of adolescence.

This makes sense biologically why should your brain waste energy remembering things that aren’t very necessary to your day to day life? It’s one of the reasons that younger children can learn a second language much faster than adults they have more synapses to store that information. And if they keep speaking that second language often enough, they will remember it the rest of their lives.

But if there is a subject they didn’t concentrate so hard on, like math, suddenly they start forgetting things they used to know because the brain is deleting that information.
* * *
At this point, we’re shocked anyone makes it to age twenty. Or as Mark Twain said, “When a child turns 12, he should be kept in a barrel and fed through the bung hole, until he reaches 16 . at which time you plug the bung hole.”


5 Reasons Teenagers Act the Way They Do

All teenagers take stupid risks that they one day look back on and wonder what the heck they were thinking. But studies have found it is not because teens aren’t thinking about the risks involved—it’s because they think about them longer than adults.

Yes, that’s counter-intuitive. But think of it like this: If you are on a diet and see a piece of yummy chocolate cake, are you more likely to eat it if you just glance at it, remember you are trying to eat healthy, and walk away, or if you sit there and mull over the pros and cons of eating it? The latter, obviously.

It’s the same with the teen brain. Our brains take a lot longer to fully form than was previously thought. In teens, the frontal lobe (where our decision making happens) is not as connected to the rest of the brain as it is later in life. This means teens literally cannot come to a decision as fast as an adult. Teens take an average of 170 milliseconds longer to go over the consequences of a decision, which in turn makes them more likely to decide the risk is worth it.

2. Giving in to Peer Pressure

Adding friends to the mix makes it even harder for teens to avoid taking risks.

Adults wonder why their kids' friends can influence them so much. That’s because once you are an adult, your brain has quite literally grown out of it.

One study using MRI scans on adults and teens showed that their brains reacted very differently to the presence of friends when making a decision. It found that teens who would not take risks when alone or with an adult were far more likely to take risks when their friends were watching. The scans showed that the reward center of the teen brain became much more active in the company of their peers. In college students and adults, however, the reward center’s activity remained at a constant level no matter who was watching.

This means that teens, when spending that tiny bit of extra time deciding what choice to make, are also fighting against the overwhelming internal drive that tells us to do things that feel good. As the brain develops in adulthood, however, that connection ends and we end up getting no extra good feeling from taking risks in front of our friends.

3. Lack of Concentration

While teens may look more like adults than kids, to a neuroscientist their brains resemble a child's. That’s part of the reason teens suddenly start acting like toddlers again around age 14. While their bodies are aging, their brain is rearranging itself in a way that temporarily makes it act the same way it did when they were younger.

When scientists looked at how teenagers’ brains functioned while they were distracted during an assigned task, they found a large amount of activity in that darn frontal lobe again, far more than they would in an adult. Teens have too much active grey matter in that area, something that decreases as we get older. This means their brain is trying to take in and process everything going on around it, literally overloading them. The more streamlined adult brain works more efficiently, making concentrating on one thing much easier.

But if you are in your twenties and have been feeling cocky up until this point, it’s important to note that this chaotic brain makeup doesn’t completely settle down until your early thirties.

4. Overly Emotional

If teens seem to not care about other people’s feelings or seem to flip out over nothing, it might not be because they are drama queens. Studies have found that teens have a much harder time correctly interpreting vocal inflection and facial expressions from other people, and so they sometimes react irrationally to emotional situations.

One study showed teens and adults pictures like this:

What emotion do you think that woman is feeling? If you’re not a teenager you probably answered fear, just like every single adult in the study did. But while some teens identified fear, 50% of them saw anger, or even shock. All of the participants were hooked up to MRI machines while they looked at these images, and an analysis of the scans showed that adults and teens used two completely different parts of their brains to come to a decision on what emotions the people were feeling.

The teens were using a part of the brain called the amygdala, which largely controls emotions, while the most active part of the adult brain was the part controlling logic and reason. That means that if you are expressing an emotion—say, disappointment—a teen’s brain has a 50% chance of misinterpreting it as a different emotion, like anger. Then, since the emotional part of their brain is already active from making that (incorrect) judgment, they become more likely to react irrationally and over the top.

5. Getting Dumber

Parents of teens often wonder what happened to the bright child they used to have. How can someone go from getting A's to getting C's when they seem to be doing the same amount of work? Once again, changes in the brain are to blame. While the merits of IQ tests are debatable, scientists used to think IQ stayed the same over one’s lifetime. Now it turns out that number can fluctuate widely in adolescence.

All the extra grey matter we talked about starts to die off as you get older. When you are young, that grey stuff has lots of extra synapses that help your brain store and process information. But as you age, your brain starts killing off the bits that don’t get used as often. Scientists used to think there was only one major “surge” of synapse “pruning” when we were children, but brain scans of teens have shown that one just as large happens at the beginning of adolescence.

This makes sense biologically why should your brain waste energy remembering things that aren’t very necessary to your day to day life? It’s one of the reasons that younger children can learn a second language much faster than adults they have more synapses to store that information. And if they keep speaking that second language often enough, they will remember it the rest of their lives.

But if there is a subject they didn’t concentrate so hard on, like math, suddenly they start forgetting things they used to know because the brain is deleting that information.
* * *
At this point, we’re shocked anyone makes it to age twenty. Or as Mark Twain said, “When a child turns 12, he should be kept in a barrel and fed through the bung hole, until he reaches 16 . at which time you plug the bung hole.”


5 Reasons Teenagers Act the Way They Do

All teenagers take stupid risks that they one day look back on and wonder what the heck they were thinking. But studies have found it is not because teens aren’t thinking about the risks involved—it’s because they think about them longer than adults.

Yes, that’s counter-intuitive. But think of it like this: If you are on a diet and see a piece of yummy chocolate cake, are you more likely to eat it if you just glance at it, remember you are trying to eat healthy, and walk away, or if you sit there and mull over the pros and cons of eating it? The latter, obviously.

It’s the same with the teen brain. Our brains take a lot longer to fully form than was previously thought. In teens, the frontal lobe (where our decision making happens) is not as connected to the rest of the brain as it is later in life. This means teens literally cannot come to a decision as fast as an adult. Teens take an average of 170 milliseconds longer to go over the consequences of a decision, which in turn makes them more likely to decide the risk is worth it.

2. Giving in to Peer Pressure

Adding friends to the mix makes it even harder for teens to avoid taking risks.

Adults wonder why their kids' friends can influence them so much. That’s because once you are an adult, your brain has quite literally grown out of it.

One study using MRI scans on adults and teens showed that their brains reacted very differently to the presence of friends when making a decision. It found that teens who would not take risks when alone or with an adult were far more likely to take risks when their friends were watching. The scans showed that the reward center of the teen brain became much more active in the company of their peers. In college students and adults, however, the reward center’s activity remained at a constant level no matter who was watching.

This means that teens, when spending that tiny bit of extra time deciding what choice to make, are also fighting against the overwhelming internal drive that tells us to do things that feel good. As the brain develops in adulthood, however, that connection ends and we end up getting no extra good feeling from taking risks in front of our friends.

3. Lack of Concentration

While teens may look more like adults than kids, to a neuroscientist their brains resemble a child's. That’s part of the reason teens suddenly start acting like toddlers again around age 14. While their bodies are aging, their brain is rearranging itself in a way that temporarily makes it act the same way it did when they were younger.

When scientists looked at how teenagers’ brains functioned while they were distracted during an assigned task, they found a large amount of activity in that darn frontal lobe again, far more than they would in an adult. Teens have too much active grey matter in that area, something that decreases as we get older. This means their brain is trying to take in and process everything going on around it, literally overloading them. The more streamlined adult brain works more efficiently, making concentrating on one thing much easier.

But if you are in your twenties and have been feeling cocky up until this point, it’s important to note that this chaotic brain makeup doesn’t completely settle down until your early thirties.

4. Overly Emotional

If teens seem to not care about other people’s feelings or seem to flip out over nothing, it might not be because they are drama queens. Studies have found that teens have a much harder time correctly interpreting vocal inflection and facial expressions from other people, and so they sometimes react irrationally to emotional situations.

One study showed teens and adults pictures like this:

What emotion do you think that woman is feeling? If you’re not a teenager you probably answered fear, just like every single adult in the study did. But while some teens identified fear, 50% of them saw anger, or even shock. All of the participants were hooked up to MRI machines while they looked at these images, and an analysis of the scans showed that adults and teens used two completely different parts of their brains to come to a decision on what emotions the people were feeling.

The teens were using a part of the brain called the amygdala, which largely controls emotions, while the most active part of the adult brain was the part controlling logic and reason. That means that if you are expressing an emotion—say, disappointment—a teen’s brain has a 50% chance of misinterpreting it as a different emotion, like anger. Then, since the emotional part of their brain is already active from making that (incorrect) judgment, they become more likely to react irrationally and over the top.

5. Getting Dumber

Parents of teens often wonder what happened to the bright child they used to have. How can someone go from getting A's to getting C's when they seem to be doing the same amount of work? Once again, changes in the brain are to blame. While the merits of IQ tests are debatable, scientists used to think IQ stayed the same over one’s lifetime. Now it turns out that number can fluctuate widely in adolescence.

All the extra grey matter we talked about starts to die off as you get older. When you are young, that grey stuff has lots of extra synapses that help your brain store and process information. But as you age, your brain starts killing off the bits that don’t get used as often. Scientists used to think there was only one major “surge” of synapse “pruning” when we were children, but brain scans of teens have shown that one just as large happens at the beginning of adolescence.

This makes sense biologically why should your brain waste energy remembering things that aren’t very necessary to your day to day life? It’s one of the reasons that younger children can learn a second language much faster than adults they have more synapses to store that information. And if they keep speaking that second language often enough, they will remember it the rest of their lives.

But if there is a subject they didn’t concentrate so hard on, like math, suddenly they start forgetting things they used to know because the brain is deleting that information.
* * *
At this point, we’re shocked anyone makes it to age twenty. Or as Mark Twain said, “When a child turns 12, he should be kept in a barrel and fed through the bung hole, until he reaches 16 . at which time you plug the bung hole.”


5 Reasons Teenagers Act the Way They Do

All teenagers take stupid risks that they one day look back on and wonder what the heck they were thinking. But studies have found it is not because teens aren’t thinking about the risks involved—it’s because they think about them longer than adults.

Yes, that’s counter-intuitive. But think of it like this: If you are on a diet and see a piece of yummy chocolate cake, are you more likely to eat it if you just glance at it, remember you are trying to eat healthy, and walk away, or if you sit there and mull over the pros and cons of eating it? The latter, obviously.

It’s the same with the teen brain. Our brains take a lot longer to fully form than was previously thought. In teens, the frontal lobe (where our decision making happens) is not as connected to the rest of the brain as it is later in life. This means teens literally cannot come to a decision as fast as an adult. Teens take an average of 170 milliseconds longer to go over the consequences of a decision, which in turn makes them more likely to decide the risk is worth it.

2. Giving in to Peer Pressure

Adding friends to the mix makes it even harder for teens to avoid taking risks.

Adults wonder why their kids' friends can influence them so much. That’s because once you are an adult, your brain has quite literally grown out of it.

One study using MRI scans on adults and teens showed that their brains reacted very differently to the presence of friends when making a decision. It found that teens who would not take risks when alone or with an adult were far more likely to take risks when their friends were watching. The scans showed that the reward center of the teen brain became much more active in the company of their peers. In college students and adults, however, the reward center’s activity remained at a constant level no matter who was watching.

This means that teens, when spending that tiny bit of extra time deciding what choice to make, are also fighting against the overwhelming internal drive that tells us to do things that feel good. As the brain develops in adulthood, however, that connection ends and we end up getting no extra good feeling from taking risks in front of our friends.

3. Lack of Concentration

While teens may look more like adults than kids, to a neuroscientist their brains resemble a child's. That’s part of the reason teens suddenly start acting like toddlers again around age 14. While their bodies are aging, their brain is rearranging itself in a way that temporarily makes it act the same way it did when they were younger.

When scientists looked at how teenagers’ brains functioned while they were distracted during an assigned task, they found a large amount of activity in that darn frontal lobe again, far more than they would in an adult. Teens have too much active grey matter in that area, something that decreases as we get older. This means their brain is trying to take in and process everything going on around it, literally overloading them. The more streamlined adult brain works more efficiently, making concentrating on one thing much easier.

But if you are in your twenties and have been feeling cocky up until this point, it’s important to note that this chaotic brain makeup doesn’t completely settle down until your early thirties.

4. Overly Emotional

If teens seem to not care about other people’s feelings or seem to flip out over nothing, it might not be because they are drama queens. Studies have found that teens have a much harder time correctly interpreting vocal inflection and facial expressions from other people, and so they sometimes react irrationally to emotional situations.

One study showed teens and adults pictures like this:

What emotion do you think that woman is feeling? If you’re not a teenager you probably answered fear, just like every single adult in the study did. But while some teens identified fear, 50% of them saw anger, or even shock. All of the participants were hooked up to MRI machines while they looked at these images, and an analysis of the scans showed that adults and teens used two completely different parts of their brains to come to a decision on what emotions the people were feeling.

The teens were using a part of the brain called the amygdala, which largely controls emotions, while the most active part of the adult brain was the part controlling logic and reason. That means that if you are expressing an emotion—say, disappointment—a teen’s brain has a 50% chance of misinterpreting it as a different emotion, like anger. Then, since the emotional part of their brain is already active from making that (incorrect) judgment, they become more likely to react irrationally and over the top.

5. Getting Dumber

Parents of teens often wonder what happened to the bright child they used to have. How can someone go from getting A's to getting C's when they seem to be doing the same amount of work? Once again, changes in the brain are to blame. While the merits of IQ tests are debatable, scientists used to think IQ stayed the same over one’s lifetime. Now it turns out that number can fluctuate widely in adolescence.

All the extra grey matter we talked about starts to die off as you get older. When you are young, that grey stuff has lots of extra synapses that help your brain store and process information. But as you age, your brain starts killing off the bits that don’t get used as often. Scientists used to think there was only one major “surge” of synapse “pruning” when we were children, but brain scans of teens have shown that one just as large happens at the beginning of adolescence.

This makes sense biologically why should your brain waste energy remembering things that aren’t very necessary to your day to day life? It’s one of the reasons that younger children can learn a second language much faster than adults they have more synapses to store that information. And if they keep speaking that second language often enough, they will remember it the rest of their lives.

But if there is a subject they didn’t concentrate so hard on, like math, suddenly they start forgetting things they used to know because the brain is deleting that information.
* * *
At this point, we’re shocked anyone makes it to age twenty. Or as Mark Twain said, “When a child turns 12, he should be kept in a barrel and fed through the bung hole, until he reaches 16 . at which time you plug the bung hole.”


5 Reasons Teenagers Act the Way They Do

All teenagers take stupid risks that they one day look back on and wonder what the heck they were thinking. But studies have found it is not because teens aren’t thinking about the risks involved—it’s because they think about them longer than adults.

Yes, that’s counter-intuitive. But think of it like this: If you are on a diet and see a piece of yummy chocolate cake, are you more likely to eat it if you just glance at it, remember you are trying to eat healthy, and walk away, or if you sit there and mull over the pros and cons of eating it? The latter, obviously.

It’s the same with the teen brain. Our brains take a lot longer to fully form than was previously thought. In teens, the frontal lobe (where our decision making happens) is not as connected to the rest of the brain as it is later in life. This means teens literally cannot come to a decision as fast as an adult. Teens take an average of 170 milliseconds longer to go over the consequences of a decision, which in turn makes them more likely to decide the risk is worth it.

2. Giving in to Peer Pressure

Adding friends to the mix makes it even harder for teens to avoid taking risks.

Adults wonder why their kids' friends can influence them so much. That’s because once you are an adult, your brain has quite literally grown out of it.

One study using MRI scans on adults and teens showed that their brains reacted very differently to the presence of friends when making a decision. It found that teens who would not take risks when alone or with an adult were far more likely to take risks when their friends were watching. The scans showed that the reward center of the teen brain became much more active in the company of their peers. In college students and adults, however, the reward center’s activity remained at a constant level no matter who was watching.

This means that teens, when spending that tiny bit of extra time deciding what choice to make, are also fighting against the overwhelming internal drive that tells us to do things that feel good. As the brain develops in adulthood, however, that connection ends and we end up getting no extra good feeling from taking risks in front of our friends.

3. Lack of Concentration

While teens may look more like adults than kids, to a neuroscientist their brains resemble a child's. That’s part of the reason teens suddenly start acting like toddlers again around age 14. While their bodies are aging, their brain is rearranging itself in a way that temporarily makes it act the same way it did when they were younger.

When scientists looked at how teenagers’ brains functioned while they were distracted during an assigned task, they found a large amount of activity in that darn frontal lobe again, far more than they would in an adult. Teens have too much active grey matter in that area, something that decreases as we get older. This means their brain is trying to take in and process everything going on around it, literally overloading them. The more streamlined adult brain works more efficiently, making concentrating on one thing much easier.

But if you are in your twenties and have been feeling cocky up until this point, it’s important to note that this chaotic brain makeup doesn’t completely settle down until your early thirties.

4. Overly Emotional

If teens seem to not care about other people’s feelings or seem to flip out over nothing, it might not be because they are drama queens. Studies have found that teens have a much harder time correctly interpreting vocal inflection and facial expressions from other people, and so they sometimes react irrationally to emotional situations.

One study showed teens and adults pictures like this:

What emotion do you think that woman is feeling? If you’re not a teenager you probably answered fear, just like every single adult in the study did. But while some teens identified fear, 50% of them saw anger, or even shock. All of the participants were hooked up to MRI machines while they looked at these images, and an analysis of the scans showed that adults and teens used two completely different parts of their brains to come to a decision on what emotions the people were feeling.

The teens were using a part of the brain called the amygdala, which largely controls emotions, while the most active part of the adult brain was the part controlling logic and reason. That means that if you are expressing an emotion—say, disappointment—a teen’s brain has a 50% chance of misinterpreting it as a different emotion, like anger. Then, since the emotional part of their brain is already active from making that (incorrect) judgment, they become more likely to react irrationally and over the top.

5. Getting Dumber

Parents of teens often wonder what happened to the bright child they used to have. How can someone go from getting A's to getting C's when they seem to be doing the same amount of work? Once again, changes in the brain are to blame. While the merits of IQ tests are debatable, scientists used to think IQ stayed the same over one’s lifetime. Now it turns out that number can fluctuate widely in adolescence.

All the extra grey matter we talked about starts to die off as you get older. When you are young, that grey stuff has lots of extra synapses that help your brain store and process information. But as you age, your brain starts killing off the bits that don’t get used as often. Scientists used to think there was only one major “surge” of synapse “pruning” when we were children, but brain scans of teens have shown that one just as large happens at the beginning of adolescence.

This makes sense biologically why should your brain waste energy remembering things that aren’t very necessary to your day to day life? It’s one of the reasons that younger children can learn a second language much faster than adults they have more synapses to store that information. And if they keep speaking that second language often enough, they will remember it the rest of their lives.

But if there is a subject they didn’t concentrate so hard on, like math, suddenly they start forgetting things they used to know because the brain is deleting that information.
* * *
At this point, we’re shocked anyone makes it to age twenty. Or as Mark Twain said, “When a child turns 12, he should be kept in a barrel and fed through the bung hole, until he reaches 16 . at which time you plug the bung hole.”


Se videoen: Hjerneforskeren og den evige teenager: Forældre


Kommentarer:

  1. Kajora

    Wonderfully helpful message

  2. Tanris

    Hvilke ord ... super, en bemærkelsesværdig idé

  3. Ormond

    Det kom ikke ud endnu.

  4. True

    en charmerende idé

  5. Melchoir

    Jeg tror, ​​han har forkert. Jeg er sikker. Lad os prøve at diskutere dette. Skriv til mig i PM.

  6. Devisser

    Jeg tror, ​​du tager fejl. Jeg er sikker. Lad os diskutere dette. E -mail mig på premierminister, vi vil tale.

  7. Muk

    Efter min mening er han forkert. Jeg er sikker.Jeg foreslår at diskutere det. Skriv til mig i PM, det taler til dig.



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