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| New Directions for Program… | 4 |
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Peer reviewedLipsey, Mark W. – New Directions for Program Evaluation, 1993
Explores the role of theory in strengthening causal interpretations in nonexperimental research. Evaluators must conduct theory-driven research, concentrating on "small theory," in that the focus is on the explanation of processes specific to the program being evaluated. Theory-guided treatment research must be programmatic and…
Descriptors: Causal Models, Effect Size, Evaluators, Generalization
Peer reviewedMcCleary, Richard; Riggs, James E. – New Directions for Program Evaluation, 1982
Time series analysis is applied to an assessment of the temporary and permanent impact of the 1975 Australian Family Law Act and its effect on number of divorces. The application and construct validity of the model is examined. (Author/PN)
Descriptors: Court Litigation, Demography, Divorce, Evaluation Methods
Peer reviewedConrad, Kendon J., Ed. – New Directions for Program Evaluation, 1994
The 9 articles of this theme issue stem from a project on alcohol and drug abuse that involved 14 projects, 10 of which began with randomized clinical trials. These papers describe implementation problems associated with experimentation in field research and the focus on ensuring internal validity. (SLD)
Descriptors: Alcohol Abuse, Drug Abuse, Evaluation Methods, Experiments
Peer reviewedBickman, Leonard – New Directions for Program Evaluation, 1985
This chapter describes the implementation and lessons learned from the conduct of three field experiments in education. All three evaluation designs used randomized assignment. Results showed even under very adverse and unstable conditions, randomized designs can be maintained. (LMO)
Descriptors: Attrition (Research Studies), Educational Assessment, Elementary Secondary Education, Evaluation Methods
