To evaluate the effectiveness of a new television commercial, a researcher measures attitudes toward the advertised product

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To evaluate the effectiveness of a new television commercial, a researcher measures attitudes toward the advertised product for a group of consumers before and after they view the commercial. Identify one factor that threatens the internal validity of this study.

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Research Methods For The Behavioral Sciences

ISBN: 9781337613316

6th Edition

Authors: Frederick J Gravetter, Lori Ann B. Forzano

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