How should we evaluate the welfare implications of improvements to safety technologies in the presence of offsetting behavior? We model this problem as a symmetric game in which each player's payoff depends on his own action and the average action of the other players, and analyze under which...

We provide a microeconomic analysis of the incentive and welfare effects of idiosyncratic return risk. While most of the existing literature has focused on risky returns as an aggregate shock, we allow for correlation between returns and the agent's non-financial endowment. Using a simple...