The thesis consists of an introductory part and four self-contained papers. Paper [I] theoretically analyzes how the level and uncertainty of future prospects affect incentives to abstain from sexual risk taking in the presence of HIV. The results suggest that, for individuals with limited...

This paper analyzes the mechanisms underlying excessive sexual risk taking in the presence of HIV. Drawing ideas from psychology on decision-making processes and risk evaluation, a theoretical model interacting affect-induced myopia and cognitive dissonance is developed and analyzed. The results...