In order to help construct a natural history of interpersonal violence between college students, a pilot study of 120 males and a follow-up replication/refinement study of 385 males (52 percent) and females (48 percent) were conducted where participants were asked to describe a most recent physical fight. The study investigated 11 important proximal influences on physical fights. In regards to prevalence of violence and injury, the data revealed that 40.5 percent of the pilot study males, 32.7 percent of the replication/refinement study males, and 17.3 percent of replication/refinement study females had at least 1 physical fight in the previous 6-months which exceeded the yearly rates for high school students. The replication/refinement study showed that 63 percent of participants were able to recall and describe a recent physical fight with another student. For males the findings both support and supplement current research on proximal influences that are found to be gender specific. Interpersonal violence between students resulted in injury for 9.1 percent of the responding students and required medical attention. References