Develops a goal programing model for achieving racial balance in segregated public schools. The model is illustrated and offered as an improvement on linear programing, a model previously applied that allows only a single objective function and requires more variables and constraints than goal programing does. (Author/IRT)

Describes advances in capture-recapture modeling, including the biologically motivated emphasis on model-based hypothesis testing and the development of models for spatially stratified populations. Discusses the severe problems associated with count statistics reflecting unknown sampling fractions. (67 references) (KR)

Statistical approaches to assess how prevention and intervention programs achieve their effects are described and illustrated through the evaluation of a health promotion program to reduce dietary cholesterol and a school-based drug prevention program. Analyses require the measurement of intervening or mediating variables to represent the…