Please use this identifier to cite or link to this item: https://doi.org/10.1016/0301-0511(94)90037-X
Title: Contingent negative variation (CNV) and erotic preference in self-declared homosexuals and in child sex offenders
Authors: Howard, R.C. 
Longmore, F.J.
Mason, P.A.
Martin, J.L.
Keywords: CNV
Pedophilia
Penile plethysmography
Sexual orientation
Issue Date: 1994
Source: Howard, R.C., Longmore, F.J., Mason, P.A., Martin, J.L. (1994). Contingent negative variation (CNV) and erotic preference in self-declared homosexuals and in child sex offenders. Biological Psychology 38 (2-3) : 169-181. ScholarBank@NUS Repository. https://doi.org/10.1016/0301-0511(94)90037-X
Abstract: Contingent negative variation (CNV) was recorded bilaterally from central electrodes using a 'match/mismatch' paradigm in (Study 1) samples of heterosexual men (N = 6), gay men (N = 10) and lesbian women (N = 14) and (Study 2) in samples of child sex offenders (N = 34) and heterosexual control men (N = 19). Sexual orientation was assessed using the Multidimensional Scale of Sexuality (MSS) and the Human Sexuality Questionnaire (HSQ). Separate CNV averages were formed for each condition of stimulation: for Study 1, slides of adult male and female nudes; for Study 2, slides of child, pubescent and adult male and female nudes. Penile plethysmographic (PPG) data were also obtained from 15 of the child sex offender sample while they viewed stimuli of the same categories as were used in the CNV recording. On the basis of their PPG responses to children, child sex offenders were classified as either 'pedophiles' or 'non-pedophiles'. In Study 1 significant Group x Sex (of slide) and Group x Electrode interactions indicated that: (i) heterosexual men (but neither homosexual group) showed significantly larger CNVs to female than to male slides; (ii) both homosexual groups showed significantly asymmetrical (R > L) CNVs. In Study 2, controls showed significantly greater CNVs to adult females than to both adult males and female children. Child sex offenders showed no significant differences in CNV to male and female slides for any age. 'Non-pedophiles' showed significantly larger CNVs to female adults than to female children, but 'pedophiles' did not. It is concluded that CNV has promise as a measure of both deviant and non-deviant sexual preference.
Source Title: Biological Psychology
URI: http://scholarbank.nus.edu.sg/handle/10635/20344
ISSN: 03010511
DOI: 10.1016/0301-0511(94)90037-X
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