[Solved] A study has found that those with an external locus of control were positively correlated with ethical decision making, whereas those with an internal locus of control were negatively correlated. Erotic Plasticity: The degree to which an individual's sex drive or sexual orientation can be influenced by cultural, social, and situational factors. Necrophilia: involves a sexual attraction to corpses, considered a paraphilic disorder. Erectile Disorder: A medical condition characterized by the consistent inability to achieve or maintain an erection sufficient for satisfactory sexual performance. Depo-Provera: A birth control method involving an injectable prescription medication that prevents pregnancy.