The relative-deprivation principle: The sense that one is worse off than others.

Predictors of happiness (High self-esteem, outgoing personality, close relationships, work that engages, having goals in life, religious faith, sleeping well, exercise)

o  Wealth correlates better than previously thought with happiness. However, wealth cannot buy happiness.

·  Individual differences in happiness are partially heritable and are relatively stable.

Too much happiness?

o  Ideal affect, or preferred emotional state, differs among individuals and across cultures. For instance, Americans prefer high-arousal positive emotion, whereas East Asians prefer low-arousal positive emotion.

o  High and very high happiness are associated with success in different domains (education v. relationships, respectively).