Basic research can inform social policy in a number of ways. First, it can draw the attention of policy makers to problems. Second, it can deflect policy makers away from focusing on issues that are not really problems. Third, it can help policy makers understand whether or not factors are causally related to problems and the processes underlying…

Researchers in the fields of cognitive and language development have made less use of large-scale longitudinal designs and of person-centered approaches to data analysis than have researchers in the fields of social and personality development. It is argued that differences among domains of developmental psychology in the research methods employed…