Cognitive distortions are commonly viewed as an important factor in the assessment and treatment of sexual offenders. However, consensus about the operational definition of cognitive distortions and the best instrument to measure such distortions is lacking. This paper evaluates the Bumby MOLEST and RAPE scales as measures of cognitive distortions with patients civilly committed under California's Sexually Violent Predator law. Rapists and child molesters in the current sample endorsed markedly fewer cognitive distortions than the sexual offenders in Bumby's original study (K. M. Bumby, 1996). It is suggested that current self-report measures such as the MOLEST and RAPE scales are too susceptible to a socially desirable response set to provide useful data with sexual offenders who are involuntarily committed for treatment.
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Abel, G. G., Becker, J. V., & Cunningham-Rathner, J. (1984). Complications, consent, and cognitions in sex between children and adults. International Journal of Law and Psychiatry, 7, 89–103.
Abel, G. G., Gore, D. K., Holland, C. L., Camp, N., Becker, J. V., & Rathner, J. (1989). The measurement of the cognitive distortions of child molesters. Annals of Sex Research, 2, 135.
Bumby, K. M. (1996). Assessing the cognitive distortions of child molesters and rapists: Development and validation of the MOLEST and RAPE scales. Sexual Abuse: A Journal of Research and Treatment, 8, 37–54.
Burt, M. R. (1980). Cultural myths and supports for rape. Journal of Personality and Social Psychology, 38, 217–230.
Cohen, J. (1988). Statistical power analysis for the behavioral sciences. Hillsdale, NJ: Erlbaum.
Edens, J. F., Hart, S. D., Johnson, D. W., Johnson, J. K., & Oliver, M. E. (2000). Use of the personality assessment inventory to assess psychopathy in offender population. Psychological Assessment, 12(2), 132–139.
Geer, J. H., Estupinan, L. A., & Manguno-Mire, G. M. (2000). Empathy, social skills, and other relevant cognitive processes in rapists and child molesters. Aggression and Violent Behavior, 5, 99–126.
Gilgun, J. F., & Conner, T.M. (1989, May). How perpetrators view child sexual abuse. Social Work, 249–251.
Greene, R. L. (2000). The MMPI-2: An interpretive manual (2nd ed.). Boston: Allyn and Bacon.
Hanson, R. K., & Scott, H. (1995). Assessing perspective-taking among sexual offenders, nonsexual criminals, and nonoffenders. Sexual Abuse: A Journal of Research and Treatment, 7, 259–277.
Hare, R. D. (1991). The Hare PCL-R: Rating booklet. New York: Multi-Health Systems.
Hare, R. D., Harpur, T. J., Hakstian, A. R., Forth, A. E., Hart, S. D., & Newman, J. P. (1990). The Revised Psychopathy Checklist: Descriptive statistics, reliability, and factor structure. Psychological Assessment: A Journal of Consulting and Clinical Psychology, 2, 338–341.
Hayashino, D. S., Wurtele, S. K., & Klebe, K. J. (1995). Child molesters: An examination of cognitive factors. Journal of Interpersonal Violence, 10, 106–116.
Horley, J. (2000). Cognitions supportive of child molestation. Aggression and Violent Behavior, 5, 551–564.
Kalichman, S. C., Henderson, M. C., Shealy, L. S., & Dwyer, M. (1992). Psychometric properties of the Multiphasic Sex Inventory in assessing sex offenders. Criminal Justice and Behavior, 19, 384–396.
Marshall, W. L. (1999). Current status of North American assessment and treatment programs for sexual offenders. Journal of Interpersonal Violence, 14, 221–239.
McGrath, M., Cann, S., & Konopasky, R. (1998). New measures of defensiveness, empathy, and cognitive distortions for sexual offenders against children. Sexual Abuse: A Journal of Research and Treatment, 10, 25–36.
Murphy, W. D. (1990). Assessment and modification of cognitive distortions in sex offenders. In W. L. Marshall, D. R. Laws, & H. E. Barbaree (Eds.), Handbook of sexual assault: Issues, theories, and treatment of the offender (pp. 331–342). New York: Plenum.
Nichols, H., & Molinder, I. (1984). Manual for the Multiphasic Sex Inventory. Tacoma, WA: Crime and Victim Psychology Specialists.
Overholser, J. C., & Beck, S. (1986). Multimethod assessment of rapists, child molesters, and three control groups on behavioral and psychological measures. Journal of Consulting and Clinical Psychology, 54, 682–687.
Pollock, N. L., & Hashmall, J. M. (1991). The excuses of child molesters. Behavioral Sciences and the Law, 9, 53–59.
Prentky, R. A., & Knight, R. A. (1991). Identifying critical dimensions for discriminating among rapists. Journal of Consulting and Clinical Psychology, 59, 643–661.
Ries, H. A. (1966). The MMPI K scale as a predictor of prognosis. Journal of Clinical Psychology, 22, 212–213.
Segal, Z. V., & Stermac, L. E. (1990). The role of cognition in sexual assault. In W. L. Marshall, D. R. Laws & H. E. Barbaree (Eds.), Handbook of sexual assault (pp. 161–174). New York: Plenum.
Ward, T. (2000). Sexual offenders' cognitive distortions as implicit theories. Aggression and Violent Behavior, 5, 491–507.
Ward, T., Hudson, S. M., Johnson, L., & Marshall, W. L. (1997). Cognitive distortions in sex offenders: An integrative review. Clinical Psychology Review, 17, 479–507.
Ward, T., & Keenan, T. (1999). Child molesters' implicit theories. Journal of Interpersonal Violence, 14, 821–838.
Ward, T., Keenan, T., & Hudson, S. M. (2000). Understanding cognitive, affective, and intimacy deficits in sexual offenders: A developmental perspective. Aggression and Violent Behavior, 5, 41–62.
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Arkowitz, S., Vess, J. An Evaluation of the Bumby RAPE and MOLEST Scales as Measures of Cognitive Distortions with Civilly Committed Sexual Offenders. Sex Abuse 15, 237–249 (2003). https://doi.org/10.1023/A:1025039809300
- cognitive distortions
- sexual offenders
- civil commitment