The role of dopaminergic systems in the control of sexual behavior has been a subject of
study for at least 40 years. Not surprisingly, reviews of the area have been published at …

In vertebrates, sexual differentiation of the reproductive system and brain is tightly
orchestrated by organizational and activational effects of endogenous hormones. In …

Male sexual behavior comprises a complex pattern of genital and somatomotor responses,
elicited, directed, and maintained by external and internal signals. It includes copulation as …

Dopamine (DA) is produced in numerous brain areas and influences a wide variety of social
behaviors, but very few data are available to establish the socially-relevant response …

Comparative studies of species differences and similarities in the regulation of courtship
behavior afford an understanding of evolutionary pressures and constraints shaping …

Across species, individuals within a population differ in their level of boldness in social
encounters with conspecifics. This boldness phenotype is often stable across both time and …

Within populations, some individuals tend to exhibit a bold or shy social behavior phenotype
relative to the mean. The neural underpinnings of these differing phenotypes–also …

Reptiles occupy a crucial position with respect to vertebrate phylogeny, having roamed the
earth for more than 300 million years and given rise to both birds and mammals. To date …

Cross-cultural studies have become extremely common in recent years. Although they are
the main type of study in flagship journals such as the Journal of Cross-Cultural Psychology …

Whiptail lizards provide a unique system to study evolution of brain mechanisms because
both ancestral (sexual) and descendant (parthenogenetic) species exist. Parthenogenetic …