Sexual aggression is a problem that affects people and attracts attention from society on every level, with thousands of victims each year. Understanding the etiology of sexual coercion allows for the development of intervention and treatment strategies that have the potential to lessen that effect. The current study tested the Knight and Sims-Knight (2003) etiological model of sexual coercion, originally developed on males, on new samples of nonclinical males and nonclinical females. The current study then took the framework established by the original Knight and Sims-Knight (2003) and inserted new variables, like attention deficit, hyperactivity disorder (ADHD), or new conceptualizations of old constructs, like a feminine version of psychopathy, to create new models for the etiology of sexual coercion on a sample of first 113 nonclinical college attending males and 227 nonclinical college attending females. Results indicate that the original Knight and Sims-Knight (2003) model works well on these new samples, but that the modifications made in the new male and female models improved upon the original.