Descriptor
| Causal Models | 1 |
| Construct Validity | 1 |
| Generalization | 1 |
| Research Methodology | 1 |
| Sampling | 1 |
| Theories | 1 |
| Theory Practice Relationship | 1 |
Source
| New Directions for Program… | 1 |
Author
| Cook, Thomas D. | 1 |
Publication Type
| Journal Articles | 1 |
| Reports - Evaluative | 1 |
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Peer reviewedCook, Thomas D. – New Directions for Program Evaluation, 1993
A practical theory is offered for probing external validity, the generalization of causal relationships. This alternative theory is built around five principles abstracted from research on construct validation. It emphasizes purposive sampling for theoretical ends rather than random sampling to represent a population. (SLD)
Descriptors: Causal Models, Construct Validity, Generalization, Research Methodology
