Ego depletion and implicit and explicit determinants of condom use intentions: an experimental study among young men

Background: The Reflective Impulsive Model of Strack and Deutsch (2004) is a dual-process model and could be a dynamic theoretical framework of sexual risk behavior that is able to predict condom use under different circumstances. If we apply the Reflective Impulsive Model to sexual risk behavior, implicit attitudes regarding sexual risk behavior should have a stronger impact on behavior when working memory capacity is low. Explicit attitudes have a strong impact on intentions, which diminishes as participants have less working memory capacity. Methods: In this study, we induced a state of ego depletion to examine the impact of low working memory capacity on implicit and explicit attitudes and condom use intentions. Young, male participants (N = 66) were randomly assigned to either an ego depletion condition (difficult calculus task) or a placebo condition (easy calculus task). At baseline, a questionnaire measuring explicit attitudes and intentions to use a condom, and an Implicit Association Test measuring implicit attitudes towards condoms were administered. After the ego calculus task, participants once more completed the questionnaire and Implicit Association Test. Results: We found no evidence that ego depletion had an effect on intentions to use a condom in young men. Explicit attitudes predicted intentions to use a condom, regardless of participants’ state. We found no relationship between implicit condom attitudes and intentions to use a condom, neither in the ego depletion nor in the placebo condition. Conclusions: The implications of this null finding are discussed.