Measurement of psychosexual differentiation.

Since the early 1990s, there has been a surge in interest in the study of infants, children, adolescents, and adults with physical intersex conditions or other congenital conditions that affect, among other things, the configuration of the external genitalia. Regarding psychologic evaluation, an important aspect of both short-term and long-term outcome concerns gender differentiation. This article provides an overview of various measures pertaining to gender identity, gender role, and sexual orientation that have been used in assessment studies of samples of either children and adults with gender identity disorder and/or children and adults with various physical intersex conditions. All of the measures have good psychometric quality although some have been studied more systematically than others. It is hoped that this overview will provide a template for the new generation of studies that are looking at both gender development and sexual orientation in people born with physical intersex conditions.