skip navigation

PUBLICATIONS

Register for Latest Research

Stay Informed
Register with NCJRS to receive NCJRS's biweekly e-newsletter JUSTINFO and additional periodic emails from NCJRS and the NCJRS federal sponsors that highlight the latest research published or sponsored by the Office of Justice Programs.

NCJRS Abstract

The document referenced below is part of the NCJRS Virtual Library collection. To conduct further searches of the collection, visit the Virtual Library. See the Obtain Documents page for direction on how to access resources online, via mail, through interlibrary loans, or in a local library.

 

NCJ Number: 121813 Find in a Library
Title: Brief Research Report: The Reliability of the Rape Index in a Sample of Rapists and Nonrapists
Journal: Violence and Victims  Volume:4  Issue:4  Dated:(Winter 1989)  Pages:299-306
Author(s): H E Barbaree; D J Baxter; W L Marshall
Date Published: 1989
Page Count: 8
Type: Research (Applied/Empirical)
Format: Article
Language: English
Country: United States of America
Annotation: Erectile responses of a sample of incarcerated rapists (N=60) and male university students (N=41) were monitored during verbal description of adult heterosexual interactions.
Abstract: The verbal descriptions varied in terms of the consent given by the female and the degree of force or coercion used by the male. Each subject was tested in two laboratory sessions, and rape indices were calculated as the ratio of rape arousal to consenting arousal. The discrimination between consenting and nonconsenting cues was stronger in nonrapists than rapists. This difference was observed mainly because of an increase in the nonrapists' discrimination in the second session, in which nonrapists' arousal to consenting cues was enhanced. Based on the whole sample, test-retest reliability coefficients were unacceptably low. Eliminating subjects exhibiting only minimal arousal according to various criteria yielded higher coefficients in both groups. However, in the nonrapist group, acceptable levels of reliability were only reached after eliminating all subjects who did not reach at least 75 percent of full erection (over half the sample). We concluded that the reliability of the rape index is questionable, particularly when there is doubt as to whether the subject being tested is a rapist or nonrapist, or when testing only nonrapists. 1 table, 1 note, 30 references. (Author abstract)
Main Term(s): Offender-nonoffender comparisons; Sex offender profiles
Index Term(s): Rape causes
To cite this abstract, use the following link:
http://www.ncjrs.gov/App/publications/abstract.aspx?ID=121813

*A link to the full-text document is provided whenever possible. For documents not available online, a link to the publisher's website is provided. Tell us how you use the NCJRS Library and Abstracts Database - send us your feedback.