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Title: The classical experimental designa.helps guard against the sources of internal and external ... Post by: naeemi on Aug 8, 2017 The classical experimental design
a. helps guard against the sources of internal and external validity. b. helps guard against the sources of external invalidity. c. helps guard against the sources of internal invalidity. d. cannot guard against the sources of either internal or external invalidity. e. what it helps guard against depends upon the particular experiment. Title: Re: The classical experimental designa.helps guard against the sources of internal and external ... Post by: clintre on Aug 8, 2017 Content hidden
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