Developmental assumptions that are frequently regarded as constraints on elementary school science curricula are analyzed. The argument that elementary school children cannot function as experimentalists because they have not yet attained formal operational thought is not supported by the Piagetian or non-Piagetian research reviewed. (SLD)

Considerable research illuminates the development of causal understanding. However, the research base is hardly a coherent whole. Some is based in research on children's understanding of particular science concepts. Some grows out of social psychology and considers how one attributes intentions and behaviors. Some comes from the developmental…

Argues that field research can provide evidence about the long-term socialization and developmental effects of media violence on viewer's behavior. Summarizes findings from a number of quasi-experimental studies about the effects of naturally occurring media violence. Concludes that these findings are often consistent with the hypothesis that…

The Project on State-Level Child Outcomes was initiated by the U.S. Department of Health and Human Services to examine the effects on children of waiver policies related to state welfare reform efforts prior to the passage of federal welfare reform legislation. This report details the project's examination of child well-being in the context of…

As the amount of resources allocated to out-of-school (OST) programming and policymakers' demands for research-based results increase, there is increasing interest in rigorous research designs to examine OST program outcomes. This issue of "Out-of-School Time Evaluation Snapshots" reviews 27 quasi-experimental and experimental OST…