Using prospect theory and the extended parallel process model, this study examined the effect of gain/loss message framing on perceptions of severity, susceptibility, response efficacy, and self efficacy (derived from the extended parallel process model), as well as perception of message effectiveness and behavioral intention in a community based Latino American sample. Results indicated no significant differences between a gain- and loss-frame for any of the outcome variables. In addition, message effectiveness, susceptibility, and response efficacy were the best predictors of intention to engage in early testing behavior. (Contains 5 notes and 2 tables.)