Sexual Experiences Survey - Long Form Victimization (SES-LFV)

Author of Tool: 

Koss, M.P. Abbey, A., Campbell, R., Cook, S., Norris, J., Testa, M., Ullman, S., West, C., & White, J

Key references: 

Koss, M.P. Abbey, A., Campbell, R., Cook, S., Norris, J., Testa, M., Ullman, S., West, C., & White, J. (2006). The Sexual Experiences Long Form Victimization (SES-LFV). Tucson, AZ: University of Arizona.

Koss, M.P., Abbey, A., Campbell, R., Cook, S; Norris, J., Testa, C., Ullman, S., West, C., & White, J. (2007). Revising the SES: A collaborative process to improve assessment of sexual aggression and victimization. Psychology of Women Quarterly, 31, 357-370.

Primary use / Purpose: 

The Sexual Experiences Survey Long Form Victimization (SES-LFV) is one version of the SES surveys that assesses victimization of unwanted sexual encounters including rape.

Background: 

Mary P. Koss and the Sexual Experiences Survey (SES) Collaboration have designed an instrument capable of reflecting hidden cases of rape and of measuring aggressive or coercive sexual acts and victimization on a dimensional scale. The SES surveys examines degrees of coercion used or experienced in sexual activity. All versions of the revised SES measure behavior that meets legal definitions of various sex crimes, with the exception of acts accomplished by verbal coercion not involving threats of physical harm. The acts accomplished by coercion are certainly on the sexual assault spectrum and they are of interest in many fields and settings, but it is important to clearly understand that they are not crimes. Feminist legal scholars argue that these acts should be forms of attempted rape and rape and recommend changing statutory definitions of rape as a goal for advocate policy reform. The SES Long form consists of the following rationally defined categories of items: no victimization, coercion, noncontact, contact, attempted rape, and rape.

Psychometrics: 

Koss and the SES Collaboration have stated that psychometric analyses are in process to confirm the outcome categories in the SES-LFV.

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