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| Meta Analysis | 1 |
| Quasiexperimental Design | 1 |
| Research Methodology | 1 |
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| New Directions for Program… | 1 |
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| Bryant, Fred B. | 1 |
| Wortman, Paul M. | 1 |
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Peer reviewedBryant, Fred B.; Wortman, Paul M. – New Directions for Program Evaluation, 1984
Methods for selecting relevant and appropriate quasi-experimental studies for inclusion in research synthesis using the threats-to-validity approach are presented. Effects of including and excluding studies are evaluated. (BS)
Descriptors: Evaluation Criteria, Meta Analysis, Quasiexperimental Design, Research Methodology
