Chapter 1 investigates how people's beliefs and investment behavior change in light of social information from their peers and from experts with a large-scale online experiment with participants from the U.S. and the U.K. I find that laypeople’s forecasts are strongly influenced by information...

This dissertation consists of three empirical studies on capital market efficiency in a broader sense. Two of the three papers are dedicated to the examination of short-term stock-returns in the wake of large one-day price changes – positive or negative. If significant abnormal returns can be...