For most sexually reproducing species all conspecifics of the other sex are not equally valu-
able as mates; that is, they differ in “mate value.” In many species selection has produced�…

Functional and Dysfunctional Sexual Behavior explores the full consequences of the
dissociation between sexual behaviors and reproduction. Among the themes covered is the�…

Dozens of studies, most conducted in the last four decades, have implicated oxytocin, as
well as vasopressin and their receptors, in processes that mediate selective sociality and the�…

This article evaluates a thesis containing three interconnected propositions. First, romantic
love is a “commitment device” for motivating pair-bonding in humans. Second, pair-bonding�…

Mammalian fatherhood involves a muted version of the maternal experience. In spite of
previous assumptions to the contrary, hormones influence mammalian paternal behavior�…

Two samples of male (n= 243) and female (n= 298) college students completed sexual
surveys, and in-depth, oral interviews were conducted with 28 highly sexually active female�…

Abstract [discuss the determinants and] perceptions of female sexual attractiveness/try to
show that... the primary determinants of female sexual attractiveness are predicted in�…

The evolutionary explanation of female orgasm has been difficult to come by. The orgasm in
women does not obviously contribute to the reproductive success, and surprisingly�…

Given the primacy of reproduction, same-sex sexual behavior poses an evolutionary puzzle.
Why would selection fashion motivational mechanisms to engage in sexual behaviors with�…

Sexual behavior is required for reproduction in internally fertilizing species but poses
significant social and physical risks. Females in many nonprimate species have evolved�…