- Aken, van, M.A.; Branje, S.J.T.; Denissen, J.A.
- Midlife Concerns and Short-term Personality Change in Middle Adulthood.
- European Journal of Personality, 2006, Vol. 20, 497 - 513
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.