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like the westinghouse study described in your textbook, researchers sometimes try to match their groups on a pretest when they use a nonequivalent control group design . this seems like a good idea. but, it can lead to effects that distort the results of the study if participants scored unusually high or low on the pretest.

Sagot :

It's crucial to use case studies like the Westinghouse experiment. Initially, researchers thought that changing the lighting in an office building would increase productivity.

responses to E's criticisms W. Zigler and In their review of the recent history of early childhood intervention of the Westinghouse research carried out under the present author's guidance, Berman (see record 1984-07983-001), (1969). It is said that the Westinghouse study did not draw any conclusions regarding the effectiveness or failure of Head Start. The study's findings led to suggestions for the program's expansion and improvement as well as a more thorough examination of the intervention concept. (c) 2016 APA, all rights reserved. PsycINFO Database Record: 4 references.

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