- Son, D.; Padilla‑Walker, L.M.
- Happy Helpers: A Multidimensional and Mixed‑Method Approach to Prosocial Behavior and Its Effects on Friendship Quality, Mental Health, and Well‑Being During Adolescence
- Journal of Happiness Studies, 2020, Vol.21, 1705-1723
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.