Assessing Factors Influencing Acceptance of No-Difference Research

William H. Yeaton and Lee Sechrest
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William H. Yeaton: University of Michigan
Lee Sechrest: University of Arizona

Evaluation Review, 1987, vol. 11, issue 1, 131-142

Abstract: In this randomized study 160 members of the Evaluation Research Society acted as judges to assess the attributes of research that produce credibility. The study focused on acceptability of no-difference findings, a long ignored but important domain of research. In the context of a hypothetical study, four factors were tested to determine their influence on acceptability of both no-difference and difference findings: randomization/nonran domization, one/three outcomes, power = .80/.60, and equivalence on baseline measures of all eight/all but two of eight. Experts were asked to judge degree of acceptability and to reject or accept findings in both a no-difference and a difference study. Randomization consistently enhanced the believability of outcomes whereas other factors exerted a less consistent influence. Limitations of the study were discussed.

Date: 1987
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Persistent link: https://EconPapers.repec.org/RePEc:sae:evarev:v:11:y:1987:i:1:p:131-142

DOI: 10.1177/0193841X8701100108

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