Sexual Deviance and Number of Older Brothers Among Sexual Offenders

Sexual Deviance and Number of Older Brothers Among Sexual Offenders A number of studies have shown that the probability that a man is homosexual increases with the number of older brothers (but not sisters) bom to his mother. This older brother effect suggests that a progressive maternal immunosensitization process is involved in producing homosexual preferences. A recent demonstration of the older brother effect in homosexual pedophilia raises the question of whether it is involved in other anomalous sexual preferences as well. In the present study, phallometric data were gathered from 29 child molesters, 38 rapists, and 11 individuals who had offended against both children and adults. In all groups, a phallometric index of sexual deviance (a relative preference for children or for coercive sex) was positively correlated with the offenders' number of older brothers (but not sisters). These results suggest that the maternal immunosensitization hypothesis may explain some variations in male sexual preferences. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Sexual Abuse: A Journal of Research and Treatment Springer Journals

Sexual Deviance and Number of Older Brothers Among Sexual Offenders

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 1998 by Plenum Publishing Corporation
Subject
Psychology; Sexual Behavior; Psychiatry; Clinical Psychology; Criminology and Criminal Justice, general
ISSN
1079-0632
eISSN
1573-286X
D.O.I.
10.1023/A:1022198329907
Publisher site
See Article on Publisher Site

Abstract

A number of studies have shown that the probability that a man is homosexual increases with the number of older brothers (but not sisters) bom to his mother. This older brother effect suggests that a progressive maternal immunosensitization process is involved in producing homosexual preferences. A recent demonstration of the older brother effect in homosexual pedophilia raises the question of whether it is involved in other anomalous sexual preferences as well. In the present study, phallometric data were gathered from 29 child molesters, 38 rapists, and 11 individuals who had offended against both children and adults. In all groups, a phallometric index of sexual deviance (a relative preference for children or for coercive sex) was positively correlated with the offenders' number of older brothers (but not sisters). These results suggest that the maternal immunosensitization hypothesis may explain some variations in male sexual preferences.

Journal

Sexual Abuse: A Journal of Research and TreatmentSpringer Journals

Published: Oct 6, 2004

References

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