Self-Protection and Insurance with Interdependencies
We study optimal investment in self-protection of insured individuals when they face interdependencies in the form of potential contamination from others. If individuals cannot coordinate their actions, then the positive externality of investing in self-protection implies that, in equilibrium, individuals underinvest in self-protection. Limiting insurance coverage through deductibles can partially internalize this externality and thereby improve individual and social welfare.
The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research.
Alexander Muermann & Howard Kunreuther, 2008. "Self-protection and insurance with interdependencies," Journal of Risk and Uncertainty, Springer, vol. 36(2), pages 103-123, April.