Since Darwin proposed that human musicality evolved through sexual selection, empirical evidence has supported intersexual selection as one of the adaptive functions of artistic propensities. However, intrasexual competition has been overlooked. We tested their relative importance by investigating the relationship between the self-perceived talent/expertise in 16 artistic and 2 sports modalities and proxies of intersexual selection and intrasexual competition in heterosexuals. Participants were 82 Brazilian men, 166 Brazilian women, 146 Czech men, and 458 Czech women. Factor analysis revealed five factors: (...) Literary-arts, Visual-arts, Musical-arts, Circus-arts, and Sports. Multivariate General Linear Model showed more associations of the arts to intersexual selection in women and to intrasexual selection in men, and overall more relationships in women than in men. In women, literary and musical-arts were related to elevated inter- and intrasexual selections proxies, visual and circus-arts were related to elevated intersexual selection proxies, and sports were related to intrasexual selection proxies. In men, literary-arts and sports were related to elevated inter- and intrasexual selection proxies, musical-arts were related to intrasexual proxies, and circus-arts were related to intersexual proxies; visual-arts did not have predictors. Although present in both sexes, each sexual selection component has different relative importance in each sex. Artisticality functions to attract and maintain long/short-term partners, and to compete with mating rivals. (shrink)

In The Art Instinct, Denis Dutton promoted a theoretical framework that “has more validity, more power, and more possibilities than the hermetic discourse that deadens so much of the humanities.”1 This framework is Charles Darwin’s theory of evolution by natural and sexual selection. Dutton proposed to seek “human universals that underlie the vast cacophony of cultural differences and across the globe” (AI, p. 39), based on a shared, evolved human nature.This contrasts with the relativistic presumptions of those falling under the (...) shadow of Margaret Mead and Clifford Geertz, or “the dogmas of Freud, the speculations of Jung, the sterile formulations of behaviorism, all variously empty or misleading” (p. 37). Also .. (shrink)

Integration of different lines of research concerning grandparental investment appears to be both promising and necessary. However, it must stop short when confronted with incommensurate arguments and hypotheses, either within or between disciplines. Further, some hypotheses have less plausibility and veridicality than others. This point is illustrated with results that conflict previous conclusions from evolutionary psychology about differential grandparental investment.

According to Roberts, self-experimentation is a viable tool for idea generation in the behavioral sciences. Here we discuss some limitations of this assertion, as well as particular design and data-analytic shortcomings of his experiments.