Garrett, Ian; Kamstra, Mark; Kramer, Lisa - 2004
United Kingdom, Japan, and Australia, the authors find that a conditional CAPM that allows the price of risk to vary in … as seasonal affective disorder, or SAD), risk aversion, and stock market returns. The influence of SAD on market returns … determine whether the seasonality can be explained using a conditional version of the capital asset pricing model (CAPM) that …