In many contexts people can choose how many charities to help. This paper presents results from a laboratory experiment that varies whether the subjects have a choice in the number of charities to donate to and whether they are given an option to opt out. We find that the choice increases...

This dissertation is composed of three essays. In the first essay, I build a model of the choice and timing of entry into commercial activities by an academic research team, and analyze the returns and costs of these activities. I compare the behavior and performance of the academic team to an...