One economic-related definition is based on the human truth capital theory of Gary Becker, and predicts that people invest rationally in exhibiting their sex appeal when they can expect a return on their investments.
Den første mere økonomiske definition er baseret på Gary Beckers teori om human kapital, og forudsiger, at folk investerer rationalt i at vise deres sex appeal, når de forventer et udbytte af deres investering.