Issues of Design and Analysis in Evaluation Research

Duane F. Alwin and James Sullivan
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Duane F. Alwin: Indiana University

Sociological Methods & Research, 1975, vol. 4, issue 1, 77-100

Abstract: This paper addresses the question of internal validity in quasi-experimental and nonexperimental social policy research. We focus primary attention on problems of selection in research designs where assignment to experimental conditions occurs on a nonrandom basis. Five different solutions to the problems of selection are discussed-randomization, covariance adjustment, gain scores, matching, and explicit selection-and we examine the conditions under which these solutions are useful. The problem of random measurement error is discussed within the context of our elaboration of these techniques.

Date: 1975
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Persistent link: https://EconPapers.repec.org/RePEc:sae:somere:v:4:y:1975:i:1:p:77-100

DOI: 10.1177/004912417500400105

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