Diagnosing Sexual Sadism in Sexual Offenders: Reliability across Diagnosticians

Abstract

On the basis of detailed accounts of offences committed by 12 dangerous sexual offenders and of descriptions of their life histories, their responses to various tests, self-reports of offenders’sexual interests and activities, and results of phallometric evaluations, 15 expert forensic psychiatrists diagnosed whether each offender met the criteria for sexual sadism. The psychiatrists also indicated their confidence in the diagnoses they made and rated the relevance to the diagnosis of sexual sadism for various features of the offence and the offender. Results revealed unsatisfactory levels of diagnostic agreement among the psychiatrists. On the other hand, they agreed quite well on the importance for the diagnosis of several of the offence features described. Suggestions are offered for clinical practice.

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References

American Psychiatric Association. (1980). Diagnostic and statistical manual of mental disorders (3rd ed.). Washington, DC: Author.

American Psychiatric Association. (1987). Diagnostic and statistical manual of mental disorders (Rev. 3rd ed.). Washington, DC: Author.

American Psychiatric Association. (1994). Diagnostic and statistical manual of mental disorders (4th ed.). Washington, DC: Author.

Brownmiller, S. (1975). Against our will: Men, women and rape. New York: Simon & Schuster.

Christie, M. M., Marshall, W. L., & Lanthier, R. D. (1979). A descriptive study of incarcerated rapists and pedophiles. Ottawa: Report to the Solicitor General of Canada.

Cohen, J. (1960). A coefficient of agreement for nominal scales. Educational and Psychological Measurement, 10, 37-46.

Cronbach, L. J. (1951). Coefficient alpha and the internal structure of tests. Psychometry, 16, 297-334.

Darke, J. L. (1990). Sexual aggression: Achieving power through humiliation. In W. L. Marshall, D. R. Laws, & H. E. Barbaree (Eds.), Handbook of sexual assault: Issues, theories, and treatment of the offender (pp. 55-72). New York: Plenum.

Dietz, P. E., Hazelwood, R. R., & Warren J. (1990). The sexually sadistic criminal and his offences. Bulletin of the American Academy of Psychiatry and the Law, 18, 163-178.

10.

Frosh, S. (1993). The seeds of masculine sexuality. In J. A. Ussher & C. D. Baker (Eds.), Psychological perspectives on sexual problems: New directions in theory and practice (pp. 41-55). Boston: Routledge Kegan Paul.

11.

Gratzer, T., & Bradford, J. M. W. (1995). Offender and offence characteristics of sexual sadists: A comparative study. Journal of Forensic Sciences, 40, 450-455.

12.

Groth, A. N. (1979). Men who rape. New York: Plenum.

13.

Groth, A. N., Hobson, W. F., & Gray, T. S. (1982). The child molester: Clinical observations. In J. Conte & D. Shore (Eds.), Social work and child sexual abuse (pp. 129-142). New York: Haworth.

14.

Hair, J. H., Anderson, R. E., Tatham, R. L., & Black, W. C. (1998). Multivariate data analysis (5th ed.). Hillsdale, NJ: Prentice Hall.

15.

Marshall, W. L., & Christie, M. M. (1981). Pedophilia and aggression. Criminal Justice and Behavior, 8, 145-158.

16.

Marshall, W. L., & Kennedy, P. (in press). Sexual sadism in sexual offenders: An elusive diagnosis. Aggression and Violent Behavior: A Review Journal.

17.

Marshall, W. L., Kennedy, P., & Yates, P. (in press). An examination of the diagnosis of sexual sadism in prison settings. Sexual Abuse: A Journal of Research and Treatment.

18.

Murphy, K. R., & Davidshofer, C. O. (1998). Psychological testing principles and applications (4th ed.). Hillsdale, NJ: Prentice Hall.

19.

Nunnally, J. C. (1978). Psychometric theory (2nd ed.). New York: McGraw-Hill.