This thesis studies the long-term benefits of preschool interventions, the impact of promotions on heart disease, and the effects of light trucks on traffic fatalities. The first chapter examines the long-term effects of preschool interventions. Several influential experiments - Abecedarian,...

This dissertation consists of three chapters on financial market imperfections, in particular, information imperfections. Chapter 1 studies how the existence of a fixed cost per transaction faced by uninformed investors hampers information revelation through price and exacerbates adverse...