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Experimental and Quasi-Experimental Designs for Research

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Experimental and Quasi-Experimental Designs for Research

Experimental and Quasi-Experimental Designs for Research

DONALD T. CAMPBELL
Northwestern University

JULIAN C. STANLEY
Johns Hopkins University

In this chapter we shall examine the validity of 16 experimental designs against 12 common threats to valid inference. By experiment we refer to that portion of research in which variables are manipulated and their effects upon other variables observed. It is well to distinguish the particular role of this chapter. It is not a chapter on experimental design in the Fisher (1925, 1935) tradition, in which an experimenter having complete mastery can schedule treatments and measurements for optimal statistical efficiency, with complexity of design emerging only from that goal of efficiency. Insofar as the designs discussed in the present chapter become complex, it is because of the intransigency of the environment: because, that is, of the experimenterâ€™s lack of complete control.

Country	USA
Binding	Kindle Edition
Format	Kindle eBook
IsAdultProduct
Label	Ravenio Books
Manufacturer	Ravenio Books
NumberOfPages	128
PublicationDate	2015-09-03
Publisher	Ravenio Books
ReleaseDate	2015-09-03
Studio	Ravenio Books

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