Serial rape is defined in the Crime Classification
Manual (1992) as, "…three or more separate events, with an emotional cooling off
period [between offenses]…" (p. 12). Rape is often believed to be a purely
sexually motivated crime, where the offender's only objective is sexual
gratification. However, this does not seem to be the case, as rape is more often
motivated by the offender's need to displace anger toward, or exert power over
the victim.