A method for analyzing retrospective pretest/posttest designs: I. Theory

descriptionPublicationkeyboard_double_arrow_right Article 01 Jul 1988 Netherlands English Publisher:Springer Science and Business Media LLCJournal:Bulletin of the Psychonomic Society, volume 26, pages 51-54 (issn: 0090-5054,

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Authors: Koele, P.; Hoogstraten, J.;

doi: 10.3758/bf03334859

handle: 11245/1.428695

A method for analyzing retrospective pretest/posttest designs: I. Theory

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Abstract

To control for response-shift bias (RSB) in pretest/posttest designs, G. S. Howard et al (1979, 1980, 1981) proposed the use of retrospective pretests ("thentests"). If an RSB is present, thentest/posttest difference scores will yield better estimates of a treatment effect than will the usual pretest/posttest difference scores. In this article, a method is presented that is aimed at detecting RSB in retrospective pretest/posttest designs. This hierarchical model fitting procedure is easy to apply, prevents capitalization on chance, and makes optimal use of information supplied by the control group.

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Netherlands

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University of Amsterdam
Netherlands

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