[Influence of the sex and gender in the sexual behavior of adolescents].

The aim of this study is to evaluate the relation between gender and sex with the sexual behavior of adolescents. The sample comprised 815 teenagers (M=15.65, Sd.=1.42). The assessment instruments were the BEM Sex Role Inventory, the Sexual Opinion Survey, the Questionnaire of Risk Perception of Bayés and a questionnaire designed for the study. The results revealed that the majority of adolescents do not match the traditional gender stereotypes, defining themselves as adrogynes (34.4%). The teenagers who are defined as adrogynes or masculine carry out more sexual behaviors, and who display more erotophilia. The need to include the variable "gender" as a category of analysis in research on sexual behavior is indicated.