Because choosing insurance requires consumers to assess risks and probabilities, the demand for insurance has proven to be fertile ground for identifying deviations from rational behavior. Consumers often shun the insurance against large losses that they rationally should want (e.g., floods);...

Persistently high profits on “insurance” for small value losses sold as an add-on to other products or services (such as extended warranties sold with consumer electronics, loss damage waivers sold with a car rental, and credit life insurance sold with a loan) pose a twofold challenge to the...