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Myopic loss aversion is the combination of a greater sensitivity to losses than to gains and a tendency to evaluate outcomes frequently. Two implications of myo-pic loss aversion are tested experimentally. 1. Investors who display myopic loss aversion will be more willing to accept risks if they evaluate their investments less often. 2. If all payoffs are increased enough to eliminate losses, investors will accept more risk. In a task in which investors learn from experience, both predictions are supported. The investors who got the most frequent feedback (and thus the most information) took the least risk and earned the least money. In an innovative paper Mehra and Prescott 1985 an-nounced the existence of a new anomaly that they dubbed the equity premium puzzle. The equity premium is defined as the dif-ference in returns between equities (stocks) and a risk-free asset such as treasury bills. The puzzle about the historic equity pre-mium is that it has been very large. Over the time period Mehra and Prescott studied (1889-1978) the annual real return on the
Thaler et al. (1997) studied this question.