- Kokko, K.; Pulkkinen, L.; Tolle, R.
- Associations between Personality Traits and Psychological Wellbeing across Time in Middle Adulthood.
- Journal of Research in Personality, 2017, Vol. 47, 748 - 756
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.