Scientists have identified which childhood experiences are linked to happiness in adulthood

Care from parents and other adults, the opportunity to play freely, and a positive emotional atmosphere at home are linked to higher levels of well-being years later. Researchers reached this conclusion after comparing data on adults from the US, the UK and Japan.

The study was published on 30 September in the *Journal of Happiness Studies*. A total of 1,401 people took part in the study. The authors investigated whether the links between certain childhood experiences and well-being in adulthood held true across three culturally diverse countries.

Details

The researchers used the concept of the ‘evolutionary nest’ — a set of conditions for upbringing and development which, according to this theoretical model, meet a child’s biological, psychological and social needs.

Participants aged between 18 and 34 recalled their experiences up to the age of 18. The questions covered seven components: positive and negative physical contact, social engagement, free play, responsive care from adults, and the positive and negative emotional climate at home.

The researchers then compared these responses with several indicators of current well-being. These included health, life satisfaction, happiness and anxiety, as well as satisfaction with social relationships, a sense of belonging to one’s neighbourhood, social support and trust in others.

In the US, the UK and Japan, a stronger experience of such supportive conditions during childhood was associated with better outcomes across several measures of personal well-being and social relationships. These associations remained even after accounting for demographic factors such as income and education.

The results of the analysis of positive and negative experiences proved interesting. These formed two distinct factors, with positive childhood experiences generally being a stronger predictor of adult well-being than the absence of negative experiences.

However, the link was not found across all measures. When prosocial behaviour was assessed not through self-reports but via economic games with real rewards, the researchers found no association with ‘evolutionary nest’ experiences in any of the three countries.

Why this matters

This study adds an important nuance to research on adverse childhood experiences: it is not only the absence of violence, fear or adversity that may be significant for later well-being, but also the presence of positive experiences in their own right — care, play, emotional warmth and stable social bonds.

However, the results cannot be interpreted as proof that a particular parenting style directly makes a person happy in adulthood. The study is observational: the authors identified statistical correlations, not a cause-and-effect relationship.

There is also a significant methodological limitation. The adult participants assessed their own childhood retrospectively; therefore, their responses may be influenced by memory and their current psychological state. The study’s authors explicitly treat the data as recollections of childhood experiences, rather than as objective observations gathered during childhood.

Nevertheless, similar associations were found in all three countries, despite cultural differences. This makes the findings of interest for further testing in long-term studies, where children’s development is tracked directly from an early age.

Source

Phys.org: ‘International study identifies key childhood experiences that predict happiness and well-being in adulthood’, 30 September 2026.

Eugene Malthouse, Nobuyuki Hanaki, Gordon D. A. Brown. ‘The Evolved Nest in Childhood: Relation to Adult Well-being and Social Capital Across Cultures’, Journal of Happiness Studies, 2026. DOI: 10.1007/s10902-026-01109-0.