[Solved] What is an RFI? When is it used? Erotic Plasticity: The degree to which an individual's sex drive or sexual orientation can be changed by societal or situational factors. Gender Differences: The distinctions in characteristics, behavior, and roles traditionally associated with being male or female in a given society. Sexual Activity: Behaviors involving the expression of sexuality between individuals, including intercourse and other forms of sexual expression. Sexual Content: Material in media or communication that explicitly or implicitly relates to sexual themes.