- Perry, L.C.; English, D.; Perry, D.G.
- Happiness: When does it Lead to Self-Indulgence and When does it Lead to Self-Denial?
- Journal of Experimental Child Psychology. 1985, Vol. 39, 203 - 211
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.