Do voluntary commitment mechanisms improve welfare? The effect of mandatory and voluntary oaths in a social dilemma

We investigate whether oaths can enforce property rights in a social dilemma and increase welfare. We examine the impact of mandatory and voluntary oaths in a laboratory experiment where individuals can produce wealth, protect accumulated wealth, and take wealth from others. Individuals are more productive when oaths are mandatory compared to a no-oath environment. Subjects’ voluntary signing oaths behave similarly to those who sign a mandatory oath. When the oath is voluntary, nonoath-taking individuals engage in nonproductive behavior, negating the positive impact from the voluntary oath. Our results show that altering commitment mechanisms can result in varying welfare levels.