Akin et al. (2013) found that spending money on ____ was found to bring people the most happiness

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

In the context of an evolutionary approach, _____ is viewed as a universal psychological mechanism, a product of natural selection that serves both social and nonsocial functions in problem solving and environmental adaptation

a) social structure b) identity c) personality structure d) perception