- Hahn, E.A.; Johnson, W.; Spinath, F.M.
- Beyond the Heritability of Life Satisfaction - The Roles of Personality and Twin - Specific Influences.
- Journal of Research in Personality, 2013, Vol. 47, 757 - 767
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.