The term that the United States Census Bureau uses for couples who live together without being married is __________

Longitudinal designs are particularly useful for examining

a. age differences on a particular variable b. broad similarities and differences between children of different ages c. the processes that produce changes d. continuity and discontinuity in development

Long-term continuation of altruism is best encouraged in children by

a. criticizing the child when shameful acts are done. b. letting the child observe others' altruistic behaviors. c. lecturing the child on the virtues of generosity. d. offering tangible rewards (mild bribes) for altruistic actions.