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Naucne studije na usvojenoj deci pokazuju iznenadjujuce rezultate o tome koliko roditelji mogu da uticu na licnost i karakteristike svoje dece , skoro sva deca su usvojena pre prvog rodjendana i nemaju nikakva secanja bioloskih roditelja , u vecini slucajeva je oko 50% genetika , skoro isto toliko okruzenje van kuce i njihova licna iskustva ( dobra i losa ) i samo oko 0-20% u proseku dolazi od vaspitanja iz kuce.
Meta-Analysis of Personality Heritability
Heritability of personality: A meta-analysis of behavior genetic studies — This looked at 134 behavior-genetic studies (twin, adoption, etc.) with over 100,000 people. They found, on average, about 40% of personality variance is due to genetics. PubMed
They also noted a lot of the remaining variance comes from non-shared environment (i.e., the environment that makes siblings different), not shared family environment.
Big Five Twin Study
Heritability of the big five personality dimensions … — Classic twin-study using identical (MZ) and fraternal (DZ) twins. Heritability estimates:
Neuroticism: 41%
Extraversion: 53%
Openness: 61%
Agreeableness: 41%
Conscientiousness: 44% PubMed
Shared environment (what siblings share) was very small or negligible in most cases, according to this study.
Heritability Over the Lifespan
How genetic and environmental variance in personality traits shift across the lifespan — Found that around 47% of personality variance is genetic (in many studies), but these proportions can change over time. research.vu.nl
They also note that non-shared environment (unique to individuals) is a large source of the rest of the variance.
Savremena istraživanja iz oblasti bihejvioralne genetike, uključujući studije blizanaca i studije usvajanja, pokazuju da genetika ima veoma snažan uticaj na formiranje ličnosti. Prosečne procene heritabilnosti za osobine ličnosti kreću se od 40% do 60%, što znači da skoro polovina stabilnih razlika među ljudima potiče iz genetskih faktora.
S druge strane, uticaj okruženja ne nestaje – ali studije dosledno pokazuju da najveći deo onoga što nazivamo „porodično vaspitanje“ (tzv. shared environment) ima iznenađujuće mali uticaj na dugoročne osobine ličnosti kod dece i odraslih. Mnogo veći efekat ima ne-deljeno okruženje – individualna iskustva, društvo, škole, slučajni događaji, traume, kao i lične odluke.
Meta-Analysis of Personality Heritability
Heritability of personality: A meta-analysis of behavior genetic studies — This looked at 134 behavior-genetic studies (twin, adoption, etc.) with over 100,000 people. They found, on average, about 40% of personality variance is due to genetics. PubMed
They also noted a lot of the remaining variance comes from non-shared environment (i.e., the environment that makes siblings different), not shared family environment.
Big Five Twin Study
Heritability of the big five personality dimensions … — Classic twin-study using identical (MZ) and fraternal (DZ) twins. Heritability estimates:
Neuroticism: 41%
Extraversion: 53%
Openness: 61%
Agreeableness: 41%
Conscientiousness: 44% PubMed
Shared environment (what siblings share) was very small or negligible in most cases, according to this study.
Heritability Over the Lifespan
How genetic and environmental variance in personality traits shift across the lifespan — Found that around 47% of personality variance is genetic (in many studies), but these proportions can change over time. research.vu.nl
They also note that non-shared environment (unique to individuals) is a large source of the rest of the variance.
Savremena istraživanja iz oblasti bihejvioralne genetike, uključujući studije blizanaca i studije usvajanja, pokazuju da genetika ima veoma snažan uticaj na formiranje ličnosti. Prosečne procene heritabilnosti za osobine ličnosti kreću se od 40% do 60%, što znači da skoro polovina stabilnih razlika među ljudima potiče iz genetskih faktora.
S druge strane, uticaj okruženja ne nestaje – ali studije dosledno pokazuju da najveći deo onoga što nazivamo „porodično vaspitanje“ (tzv. shared environment) ima iznenađujuće mali uticaj na dugoročne osobine ličnosti kod dece i odraslih. Mnogo veći efekat ima ne-deljeno okruženje – individualna iskustva, društvo, škole, slučajni događaji, traume, kao i lične odluke.