Assessing the utility of integrating perceived barrier and response cost measures into the Extended Parallel Process Model
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The purpose of this study is to test the utility of expanding upon the Extended Parallel Process Model (EPPM)(Witte, 1992), a theory developed and widely utilized by communication scientists studying fear appeals, which provides insight on why individuals are likely to accept or reject fear appeal messages. Previous research has identified several theoretical concerns about the predictive power of the EPPM. Adopting the concerns expressed in previous studies as a theoretical framework, two separate studies were conducted to assess the validity of incorporating perceived barrier and response costs constructs to the EPPM. Regression analyses from both studies indicate that the additional variables proposed will not increase the predictive power of the EPPM.