Two chapters of this issue consider critical multiplism as a research strategy with links to meta analysis and generalizability theory. The unifying perspective it can provide for quantitative and qualitative evaluation is discussed. The third chapter explores meta analysis as a way to improve causal inferences in nonexperimental data. (SLD)

This review of the literature on computer-assisted instruction (CAI) addresses the following topics: background and scope of CAI; current research on software and learner variables; current research on microcomputers and other delivery systems; meta analyses of the effectiveness of CAI; and methods for evaluating CAI programs. It is concluded that…

The eight chapters of this theme issue evaluate a large-scale intervention, the New York City Public Schools Integrated Learning Systems Project. The overall evaluation contains ethnographic studies of project schools, statistical investigations of outcomes in terms of student achievement and attitude, comparisons of system costs to other systems,…