- Cotton Bronk, K.C.; Hill, P.L.; Lapsley, D.K.
- Purpose, Hope and Life Satisfaction in Three Age Groups.
- The Journal of Positive Psychology: Dedicated to furthering research and promoting good practice, 2009, Vol. 4, 1 - 26
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.