CFDP Revision Date
This paper uses data on companies that have been in the S&P 500 index since 1957 to examine whether risk aversion has decreased since 1995. The evidence suggests that it has not. There is no evidence that more risky companies have had larger increases in their price-earnings ratios since 1995 than less risky companies.
Fair, Ray C., "Risk Aversion and Stock Prices" (2002). Cowles Foundation Discussion Papers. 1647.