Sexual Experiences Survey (SES)— Perpetration Version is an assessment tool used to measure the prevalence of sexual aggression. It is designed to measure the frequency and severity of sexual aggression acts committed by an individual. The SES–P is a self–report questionnaire developed by researchers at the University of Michigan. The SES–P is a comprehensive assessment tool that measures the frequency and severity of a range of sexual aggression acts. The questionnaire includes questions about the types of sexual aggression acts committed, the frequency of the acts, the severity of the acts, and the context in which the acts occurred. The SES–P also includes questions about the perpetrator‘s attitudes towards sexual aggression and the consequences of their behavior. The SES–P is a useful tool for researchers and clinicians to assess the prevalence of sexual aggression in an individual. It is also useful for assessing the risk of future sexual aggression. The SES–P can help to identify individuals who may be at risk for committing sexual aggression and can be used to develop interventions to reduce the risk of future sexual aggression. The SES–P is a reliable and valid assessment tool. It has been used in a variety of research studies and has been found to be a reliable and valid measure of sexual aggression. The SES–P is also easy to administer and can be completed in a short amount of time. Overall, the SES–P is a useful assessment tool for assessing the prevalence of sexual aggression in an individual. It is a reliable and valid measure of sexual aggression and can be used to identify individuals who may be at risk for committing sexual aggression. The SES–P can also be used to develop interventions to reduce the risk of future sexual aggression.
On the following pages are questions about your sexual experiences from age 14 on.
1. Have you engaged in sex play (fondling‚ kissing‚ or petting‚ but not intercourse) when she didn’t want to because you overwhelmed her with continual arguments and pressure? Yes No
If No‚ continue with question 2.
If Yes:
1a. About how many times has it happened (from age 14 on)? 1 2 3 4 5 or more
1b. How many times last school year (September to September)? 0 1 2 3 4 5 or more
2. Have you engaged in sex play (fondling‚ kissing‚ or petting but not intercourse) when she didn’t want to because you used your position of authority (boss‚ teacher‚ camp counselor‚ supervisor) to make her? Yes No
If No‚ continue with question 3.
If Yes:
2a. About how many times has it happened (from age 14 on)? 1 2 3 4 5 or more
2b. How many times last school year (September to September)? 0 1 2 3 4 5 or more
3. Have you engaged in sex play (fondling‚ kissing‚ or petting but not intercourse) when she didn’t want to because you threatened or used some degree of physical force (twisting her arm‚ holding her down‚ etc.) to make her? Yes No
If No‚ continue with question 4.
If Yes:
3a. About how many times has it happened (from age 14 on)? 1 2 3 4 5 or more
3b. How many times last school year (September to September)? 0 1 2 3 4 5 or more
4. Have you attempted sexual intercourse (get on top of her‚ attempt to insert your penis) when she didn’t want to by threatening or using some degree of force (twisting her arm‚ holding her down‚ etc.)‚ but intercourse did not occur? Yes No
If No‚ continue with question 5.
If Yes:
4a. About how many times has it happened (from age 14 on)? 1 2 3 4 5 or more
4b. How many times last school year (September to September)? 0 1 2 3 4 5 or more
5. Have you attempted sexual intercourse (get on top of her‚ attempt to insert your penis) when she didn’t want to by giving her alcohol or drugs‚ but intercourse did not occur? Yes No
If No‚ continue with question 6.
If Yes:
5a. About how many times has it happened (from age 14 on)? 1 2 3 4 5 or more
5b. How many times last school year (September to September)? 0 1 2 3 4 5 or more
6. Have you engaged in sexual intercourse when she didn’t want to because you overwhelmed her with continual arguments and pressure? Yes No
If No‚ continue with question 7.
If Yes:
6a. About how many times has it happened (from age 14 on)? 1 2 3 4 5 or more
6b. How many times last school year (September to September)? 0 1 2 3 4 5 or more
7. Have you engaged in sexual intercourse when she didn’t want to because you used your position or authority (boss‚ teacher‚ camp counselor‚ supervisor) to make her? Yes No
If No‚ continue with question 8.
If Yes:
7a. About how many times has it happened (from age 14 on)? 1 2 3 4 5 or more
7b. How many times last school year (September to September)? 0 1 2 3 4 5 or more
8. Have you engaged in sexual intercourse when she didn’t want to because you gave her alcohol or drugs? Yes No
If No‚ continue with question 9.
If Yes:
8a. About how many times has it happened (from age 14 on)? 1 2 3 4 5 or more
8b. How many times last school year (September to September)? 0 1 2 3 4 5 or more
9. Have you engaged in sexual intercourse when she didn’t want to because you threatened or used some degree of physical force (twisting her arm‚ holding her down‚ etc.) to make her?
Yes No
If No‚ continue with question 10.
If Yes:
9a. About how many times has it happened (from age 14 on)? 1 2 3 4 5 or more
9b. How many times last school year (September to September)? 0 1 2 3 4 5 or more
Have you engaged in sex acts (anal or oral intercourse or penetration by objects other than the penis) when she didn’t want to because you threatened her or used some degree of physical force (twisting her arm‚ holding her down‚ etc.) to make her? Yes No
If No‚ continue with question 11.
If Yes:
10a. About how many times has it happened (from age 14 on)? 1 2 3 4 5 or more
10b. How many times last school year (September to September)? 0 1 2 3 4 5 or more
10.Did you answer “Yes” to any of the questions 1-10? Yes No
If Yes:
11a. Look back to the questions 1-10 in this section. What is the highest question number to which you marked “Yes”? 1 2 3 4 5 6 7 8 9 10
- Sexual Perpetration
This instrument can be found on pages 118-120 of Measuring Intimate Partner Violence Victimization and Perpetration: A Compendium of Assessment Tools‚ available online at: http://www.cdc.gov/ncipc/pub-res/IPV_Compendium.pdf
Respondents are classified according to the most severe sexual perpetration that they reported‚ ranging from no sexual victimization to rape. Men are classified as perpetrators of rape if they answered “yes” to items 8‚ 9‚ or 10.
Men are classified as perpetrators of sexual coercion if they answered “yes” to items 6 or 7 but not to any higher numbered items. Men are classified as perpetrators of attempted rape if they answered “yes” to items 4 or 5 but not to any higher numbered items. Men are classified as perpetrators of sexual contact if they answered “yes” to Items 1‚ 2‚ or 3 but not to any higher numbered items.
Koss MP‚ Gidycz CA. Sexual Experience Survey: reliability and validity. Journal of Consulting and Clinical Psychology 1985;53:422–423.
Koss MP‚ Gidycz CA‚ Wisniewski N. The scope of rape: incidence and prevalence of sexual aggression and victimization in a national sample of higher education students. Journal of Consulting and Clinical Psychology 1987;55:162–170.
Koss MP‚ Oros CJ. Sexual Experience Survey: a research instrument investigating sexual aggression and victimization. Journal of Consulting and Clinical Psychology 1982;50:455–457.