Many reports of successful school-based intervention programs suffer from an overestimation of the real effects, errors which many times arise from statistical technicalities. An illustration of such overestimations, as seen through a reanalysis of data on a successful program, is reported in this paper. The data were reevaluated using a variety…

In this first of three volumes, issues related to the prediction of the potential effectiveness of a simulator training device are reviewed, and the methods used to analyze effectiveness are discussed. The Army, which uses simulator devices for performance based weapons training, has used a process linked to the Life Cycle System Management Model…