The most commonly used and practiced method for assessing spouse abuse is the individual's self-report of engaging in or being a victim of physical aggression. However, the socially undesirable nature of relationship violence raises questions regarding the likelihood that it is accurately reported. The current investigation found that a socially desirable response set is related to willingness to report one's own aggression. However, it is not related to willingness to report a spouse's aggressive behavior. Social desirability was not related to reports of frequency or severity of one's own aggression for individuals admitting the use of any form of aggressive behavior.