The Neurobiology of Sex/Gender-Based Attraction

What causes same-sex attraction? Or, more broadly, what controls sex/gender-based attraction? Over the years there have been numerous theories, but more recently scientists have focused on the biology and, more specifically, the neurobiology of gender-based attraction. This article takes the reader through a critical review of the current literature related to sex/gender-based attraction. In examining this literature it is important to ask who is doing the studies, who has an interest in the results, and how the assumptions of the investigator and the audience affect the study design and conclusions.