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This paper has combined two main purposes: to present and explicate some propositions about how Ss perceptions about experimental situations may affect their experimental performances; and, on the basis of these propositions, to report an experimental re-examination of the dissonance theory interpretation of attitude change due to counter-attitudinal advocacy. As regards the first of these two purposes, the confirmation of the predictions in the present study may be interpreted as lending support to the original proposition about evaluation apprehension and affect arousal as biasing influences; for it was on the basis of those propositons that the experimental predictions were formulated. However further and more direct investigation of these contaminating processes is possible and desirable. (Author)
Milton J. Rosenberg (Fri,) studied this question.