PT - JOURNAL ARTICLE AU - Meir Statman TI - Betas Compared AID - 10.3905/jpm.1981.408783 DP - 1981 Jan 31 TA - The Journal of Portfolio Management PG - 41--44 VI - 7 IP - 2 4099 - https://pm-research.com/content/7/2/41.short 4100 - https://pm-research.com/content/7/2/41.full