To examine how well the theories of reasoned action and planned behavior predict condom use, the authors synthesized 96 data sets (N = 22,594) containing associations between the models' key variables. Consistent with the theory of reasoned action's predictions, (a) condom use was related to intentions (weighted mean r. = .45), (b) intentions were based on attitudes (r. = .58) and subjective norms (r. = .39), and (c) attitudes were associated with behavioral beliefs (r. = .56) and norms were associated with normative beliefs (r. = .46). Consistent with the theory of planned behavior's predictions, perceived behavioral control was related to condom use intentions (r. = . 45) and condom use (r. = .25), but in contrast to the theory, it did not contribute significantly to condom use. The strength of these associations, however, was influenced by the consideration of past behavior. Implications of these results for HIV prevention efforts are discussed.Because condom use can prevent infection with HIV and other STDs, health agencies have designed various interdisciplinary efforts, oriented by behavioral prediction models, to persuade people to use condoms consistently. For example, the health belief model (Becker, 1974;Rosenstock, 1974) posits in part that increasing perceptions of vulnerability to HIV infection should increase precautionary behavior. Yet a recent quantitative synthesis found that chronic perceived vulnerability to HIV infection in members of high-risk groups is insufficient to motivate protective actions (Gerrard, Gibbons, & Bushman, 1996; but see Bryan, Aiken, & West, 1996). The limited support for the perceived-risk hypothesis suggests a need for other behavioral models of HIV-risk-related behavior.In the present article, we modeled condom use behavior on the basis of two general theories of behavior: (a) the theory of reasoned action (Ajzen & Fishbein, 1977, 1980Fishbein, 1980; Fishbein & Ajzen, 1975) and (b) the theory of planned behavior (Ajzen, 1988(Ajzen, , 1991 Correspondence concerning this article should be addressed to: Dolores Albarracín, Department of Psychology, University of Florida, Gainesville, Florida 32611. albarrac@psych.ufl.edu.
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Author Manuscript Author ManuscriptAuthor ManuscriptAuthor Manuscript Ajzen & Driver, 1991;Ajzen & Madden, 1986;Schifter & Ajzen, 1985). Given that these models have predicted a wide range of behaviors successfully (see reviews by Ajzen, 1991; Eagly & Chaiken, 1993;Sheppard, Hartwick, & Warshaw, 1988) and have served as a basis for several HIV prevention efforts (e.g., Kamb, Dillon, Fishbein, Willis, & Project RESPECT Study Group, 1996; Kamb et al., 1998), we expected that they would also be valuable to predict condom use (cf. Sheeran & Orbell, 1998). The large number of studies that have now examined these models in relation to condom use (see Albarracín & Fishbein, 1993) and the variability of the findings suggest that a quantitative synthesis of this literature would prove valuable. Therefore, the purpose of the pre...