Introduction : Fear and loathing of evolutionary psychology in the social sciences / Daniel W. Leger, Alan C. Kamil, and Jeffrey A. French -- Risk-taking, intrasexual competition, and homicide / Martin Daly and Margo Wilson -- Adaptive design, selective history, and women's sexual motivations / Steven W. Gangestad -- Pheromones and vasanas : the functions of social chemosignals / Martha K. McClintock [and others] -- The adaptive toolbox : toward a Darwinian rationality / Gerd Gigerenzer -- Cognitive strategies and the representation of social relations by monkeys / Robert M. Seyfarth and Dorothy L. Cheney -- Motivation and melancholy : a Darwinian perspective / Randolph M. Nesse