Affectionate parenting shapes openness, conscientiousness, and agreeableness in adulthood
A longitudinal twin study following 2,232 British twins from childhood to age 18 demonstrates that affectionate parenting between ages 5 and 10 predicts higher levels of openness, conscientiousness, and agreeableness in early adulthood. Using a monozygotic twin-differences design to control for genetic and shared environmental confounders, the study reveals that these personality traits are influenced by variations in maternal warmth within the same family. The results remained robust even after adjusting for childhood behavioral issues, family support at age 18, and experiences of maltreatment. No significant associations were found for extraversion or neuroticism after controlling for genetic and environmental factors. These findings suggest that early interventions to foster positive parenting could yield modest but lasting improvements in key personality traits associated with life outcomes.
Study : https://psycnet.apa.org/fulltext/2026-02028-001.html
PDF : https://www.apa.org/pubs/journals/releases/amp-amp0001508.pdf
Early maternal affection enhances openness, conscientiousness, and agreeableness in adulthood
A longitudinal study involving 2,232 British identical twins revealed that maternal warmth between ages 5 and 10 is linked to higher levels of openness, conscientiousness, and agreeableness at age 18. Utilizing a twin-differences design, the research controlled for genetic and shared environmental factors, strengthening the causal inference. No significant associations were found between maternal affection and extraversion or neuroticism. The findings suggest that promoting affectionate parenting practices could have lasting positive effects on personality development, potentially leading to improved educational, economic, and health outcomes.


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