Expectancies in therapy research: Discriminating among heterogeneous nonspecifics

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Presents a review of the literature indicating that criticisms about the effects of therapy have changed markedly during the last 25 yrs. The challenge by H. J. Eysenck (1952) required the demonstration of the superiority of therapy procedures over events classed as nonspecifics. This challenge was met during the 1960s with a convergence of developments involving innovative therapy procedures, sensitive experimental designs, and discriminating conceptual systems. More recently, challenges have required the demonstration of the independence of the effects of therapy procedures from events classed as nonspecifics. When discriminations are made among the heterogeneous events classed as nonspecifics, it is apparent that the effects of therapy procedures have already been demonstrated to be independent of some nonspecifics. Logical tautology precludes the demonstration of independence from other nonspecifics. The role of client outcome expectancy as an interpretive artifact is questionable. (54 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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