Use and Misuse of No-Difference Findings in Eliminating Threats To Validity

William H. Yeaton and Lee Sechrest
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William H. Yeaton: University of Michigan, Center for Research on Utilization of Scientific Knowledge
Lee Sechrest: University of Arizona

Evaluation Review, 1986, vol. 10, issue 6, 836-852

Abstract: Donald Campbell and his colleagues have elaborated an approach to research based on the elimination of threats to four validity types: internal, external, construct, and statistical conclusion. The central thesis of this article is that the process of eliminating validity threats depends fundamentally on no-difference findings, a fact that, unfor tunately, has not been made explicit by researchers. The implications of this neglect are explored using examples from a number of different substantive areas such as psychology, health, and medicine. Finally, the intrinsic role of no-difference findings is described in the context of all four validity types, and suggestions for improving the process are offered.

Date: 1986
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Persistent link: https://EconPapers.repec.org/RePEc:sae:evarev:v:10:y:1986:i:6:p:836-852

DOI: 10.1177/0193841X8601000608

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