Two researchers from Mercyhurst College, Terry F. Pettijohn II and Brian J. Jungeberg, have correlated characteristics of Playboy Playmates to the social and economic conditions. Is it coincidence or does preference change in times of economic hardship?
During difficult social and economic conditions, Playmates were older, heavier and taller. They possessed larger waists, smaller eyes, a larger waist-to-hip ratio, a smaller bust-to-waist ratio, and smaller body mass index values when compared to their counterparts from brighter economic times.
Their findings were published in the Personality and Social Psychology Bulletin (see Via URL).