Ron Langevin's research while affiliated with University of Toronto and other places

Publications (111)

Article
The Canadian dangerous offender (DO) statute requires the assistance of psychiatrists and psychologists in evaluating offenders' potential danger and risk of future offenses, without substantive supporting empirical clinical research on the topic. The present study compared 62 men facing Canadian DO applications to 2,414 non-DO sexual and violent o...
Article
A sample of 2,190 sex offenders seen between 1966 and 2009 was compared on lifetime sexual and all offending, using charges, convictions, court appearances, and self-report as criteria. Of these various criteria, between 47.4% and 81.1% reoffended. Canadian child abuse reporting laws, which came into effect in the 1980s, were associated with increa...
Article
This study examines the best predictor of lifetime recidivism among Hare's psychopathy scores (PCL-R), attention deficit hyperactivity disorder (ADHD) diagnosis, and brain dysfunction measures in a sample of 1,695 adult male sexual, violent, and nonviolent offenders. Results indicated that most variables were associated with significantly more freq...
Article
This study examines the relationship of Hare's psychopathy scores (PCL-R) with attention deficit hyperactivity disorder (ADHD) diagnosis and brain dysfunction measures in a sample of 1,695 adult male sexual, violent, and nonviolent offenders. ADHD and brain dysfunction were significantly more common among psychopaths than non-psychopaths. Psychopat...
Article
The prevalence of thyroid abnormalities among 831 sexual, violent, and non-violent non-sex offenders was found to be greater than found in the general population. Thyroid abnormalities were most common among violent offenders and among sex offenders who victimized children. Thyroid disorders were associated with psychotic diagnoses, delusions, mani...
Article
A sample of 2,286 male sex offenders and paraphilics and 241 nonsex offenders was evaluated for the prevalence of mental retardation and learning disorders, using the full Wechsler IQ scales. The sex offenders were generally of average intelligence, and the mentally retarded were not overrepresented among them, but the learning disordered were. The...
Article
The prevalence of diabetes among 915 sexual, violent, and non-violent non-sex offenders was found to be more than twice the prevalence in the general population. Diabetes was most common among violent offenders and among sex offenders who victimized children. The older diabetics presented significantly more often with cognitive impairment and young...
Article
A sample of 1,180 sex offenders and paraphilics (SOPs) and 113 non–sex offender controls were compared on the Halstead-Reitan (HR) Neuropsychological Battery. The SOPs were further divided into offenders against adults versus offenders against children and into offenders against males, females, or both genders, regardless of victim age. The confoun...
Article
A sample of 1823 male paraphilics, sex offenders, and non-sex offender controls were compared on family size, birth order, and parents' ages at the time of the probands' births. Sample data were also compared to population data from Statistics Canada. The men in all groups were from larger than average Canadian families and they tended to be later...
Article
This reply addresses Blanchard’s (2007) conclusion that the reduced samples size in some of our comparisons of the Fraternal Birth Order (FBO) theory lacked the power to detect the small expected mean difference in number of older brothers minus number of younger brothers for homo-erotic versus hetero-erotic group comparisons. Further analyses repo...
Article
This study examines three hypotheses: (1) there is an association of parental and offspring substance abuse for sex offenders and paraphilics; (2) there is a higher occurrence of substance abuse among the parents of sex offenders and paraphilics than seen in the general population; (3) substance abuse among the parents will be associated with a hig...
Article
A sample of 778 male sex offenders, assessed from the 1960s to the 2000s, was examined on expressed desire for treatment, treatment attendance, and completion of at least one course of therapy. A variety of treatment approaches was used, reflecting practices of the times. Overall, 50.6% expressed a desire for treatment, 42.0% attended, and 13.6% co...
Article
Two actuarial instruments, the Violence Risk Appraisal Guide (VRAG) and Sex Offender Risk Appraisal Guide (SORAG), were examined for their utility in predicting sexual homicide and attempted homicide, based on information that would have been available prior to the actual sex killings or attempted killings. The study measured risk in a sample of th...
Article
[Ver: 8.07r/W] UTP [28.1.2006–3:38pm] [Page No. 107] {Revises}UTP/CJCCJ/CJCCJ-48(1)/3d/ CJCCJ_48_01_007.3d (CJCCJ) CJCCJ_48_01_007 –—————————————————————– Reply to Webster, Gartner, and Doob Ron Langevin and Suzanne Curnoe Department of Psychiatry University of Toronto Paul Fedoroff University of Ottawa Cheryl Webster, Rosemary Gartner, and Anthony...
Article
The goal of this study was to examine the use of pornographic materials by sex offenders during the commission of their crimes. A sample of 561 sex offenders was examined. There were 181 offenders against children, 144 offenders against adults, 223 incest offenders, 8 exhibitionists, and 5 miscellaneous cases. All but four cases were men. A total o...
Article
A sample of 320 sex offenders and 31 violent non-sex offenders, seen for psychiatric assessment between 1966 and 1974, were compared retrospectively on lifetime recidivism rates to 1999 over a minimum of 25 years. A number of criteria and data sources were used; RCMP records and hospital records were the best sources, albeit the RCMP had records fo...
Article
Thirty-three sex killers were compared to 80 sexual aggressives, 23 sadists, and 611 general sex offenders on sexual history and preferences, substance abuse crime, violence, mental illness, personality, neurological and endocrine abnormalities. Compared to other groups, sex killers started their criminal careers earlier, more often had been to ref...
Article
A sample of 228 sex offenders and nonsex offender controls were divided into two groups, based on the presence or absence of deviant sexual fantasies, as determined by their replies to the Clarke Sex History Questionnaire Fantasy Scales. The sex offenders were divided into six groups based on sexual preferences and criminal history. There were 14 h...
Article
The goal of this study was to determine if cleric-sex offenders differed significantly from other sex offenders when compared to a control group and assessed with standard instruments that examine the major factors important in sexual offenses. Twenty-four male clerics accused of sexual offenses were compared to 24 male sex offender controls, match...
Article
Objective: The goal of this study was to determine if cleric-sex offenders differed significantly from other sex offenders when compared to a control group and assessed with standard instruments that examine the major factors important in sexual offenses.Method: Twenty-four male clerics accused of sexual offenses were compared to 24 male sex offend...
Article
To determine if physician sex offenders differ significantly from other sex offenders by using a control group and assessing both groups with reliable and valid instruments. Nineteen male physician sex offenders were compared with 19 male sex offender control subjects, matched on offence type, age, education, and marital status. Both groups were co...
Article
The Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, and contemporary psychological theory have assigned a central role to deviant sexual fantasy in the genesis, maintenance, and treatment of sex offenders, but empirical studies to support that role are few in number. In this article, 201 male admitting sex offenders and contr...
Article
Full-text available
An assessment is presented that examines a number of prominent factors from the professional literature describing the background and clinical characteristics of paraphilic individuals and sex offenders. The factors include sexual history and preference, substance abuse, mental illness, personality and defensiveness, history of violence, neuropsych...
Article
A total of 203 men accused of sexual offenses were compared on the Wechsler Adult Intelligence Scale (WAIS-R), the Halstead-Reitan Battery, school grade repeats and therapy outcome measures that included desire for treatment, attendance, and attitude to treatment. There were 75 intrafamilial and 54 extrafamilial child sexual abusers, 41 sexual aggr...
Article
Substantial numbers of sex offenders have a history of learning difficulties which may lead to resistance to treatment (a learning situation) and to problems processing information in therapy. Some ways of dealing with the learning disabled client are discussed, including a focus on their strengths and being open initially about the learning proble...
Article
Homosexual (androphilic) and pedophilic men differ in a number of ways and two sets of differences are discussed in this presentation. Results from the literature suggests that there are neurological and endocrine abnormalities in pedophilia but not in androphilia. In contrast, some research suggests that homosexuality may have a genetic basis, whe...
Article
Homosexual (androphilic) and pedophilic men differ in a number of ways and two sets of differences are discussed in this presentation. Results from the literature suggests that there are neurological and endocrine abnormalities in pedophilia but not in androphilia. In contrast, some research suggests that homosexuality may have a genetic basis, whe...
Article
Thirteen diabetic male sex offenders were compared to 13 nondiabetic sex offenders matched on age, education and offense type. A standard battery of tests administered in the assessment of sex offenders was used to compare the two groups. The tests examine sexual history and preference, substance abuse, violence, personality, and neuropsychological...
Article
Thirteen diabetic male sex offenders were compared to 13 nondiabetic sex offenders matched on age, education and offense type. A standard battery of tests administered in the assessment of sex offenders was used to compare the two groups. The tests examine sexual history and preference, substance abuse, violence, personality, and neuropsychological...
Article
One hundred eighty-one men were compared on parent–child relations, using the Clarke Parent–Child Relations Questionnaire. The sample included 66 heterosexual pedophiles, 29 homosexual pedophiles, 36 incest offenders and 50 controls. The offender groups were further divided into those who used force (20%) versus those who did not; into those sexual...
Article
Full-text available
Biological and stepfathers who committed incestuous acts on their daughters were compared on sexual history and preference and on personality, using the Phallometric Test of Erotic Preference (Freund & Blanchard, 1989), the Clarke Sex History Questionnaire (Langevin, et al, 1990), and the Minnesota Multiphasic Personality Inventory (MMPI). The case...
Article
Full-text available
Biological and stepfathers who committed incestuous acts on their daughters were compared on sexual history and preference and on personality, using the Phallometric Test of Erotic Preference (Freund & Blanchard, 1989), the Clarke Sex History Questionnaire (Langevin, et al, 1990), and the Minnesota Multiphasic Personality Inventory (MMPI). The case...
Article
A total of 461 male sex offenders were compared on their histories of alcohol and street drug use. The Drug Use Survey, Michigan Alcoholism Screening Test (MAST), and Drug Abuse Screening Test (DAST) were examined to provide measures of 1) type and frequency of substance use, 2) mood on alcohol and drugs, and 3) alcoholism and drug abuse. Most sex...
Article
A total of 157 sex offenders were administered the MMPI. They were subdivided into violent and nonviolent, substance abuser versus nonabuser, criminal history versus no criminal history, CT brain abnormalities versus no abnormalities and into more and less defensive groups. From the MMPI, 125 scales measuring sexual behavior, substance abuse, viole...
Article
A total of 461 male sex offenders were compared on their histories of alcohol and street drug use. The Drug Use Survey, Michigan Alcoholism Screening Test (MAST), and Drug Abuse Screening Test (DAST) were examined to provide measures of 1) type and frequency of substance use, 2) mood on alcohol and drugs, and 3) alcoholism and drug abuse. Most sex...
Article
A total of 157 sex offenders were administered the MMPI. They were subdivided into violent and nonviolent, substance abuser versus nonabuser, criminal history versus no criminal history, CT brain abnormalities versus no abnormalities and into more and less defensive groups. From the MMPI, 125 scales measuring sexual behavior, substance abuse, viole...
Article
A number of MMPI derived scales were examined for their utility in the clinical assessment of sex offenders and for their ability to discriminate sex offenders from controls. The MMPIs from a total of 479 men were scored for scales measuring sexual behavior and deviance, substance abuse, personality, violence, suicide-proneness, defensiveness and b...
Article
A number of MMPI derived scales were examined for their utility in the clinical assessment of sex offenders and for their ability to discriminate sex offenders from controls. The MMPIs from a total of 479 men were scored for scales measuring sexual behavior and deviance, substance abuse, personality, violence, suicide-proneness, defensiveness and b...
Article
The study compared 92 incest perpetrators to 40 (noncriminal) married males on two marital inventories, the Clarke Martial Relations Questionnaire (CMRQ), and the Sexual Behavior and Marital Satisfaction Questionnaire (SBMSQ). Results showed that marital disharmony, in the form of mistrustfullness, lack of mutual friends and time together, emotiona...
Article
Brain area and optical density were computed for each hemisphere and for 4 sections within the hemispheres at the level of the temporal horns for 18 pedophiles, 12 incest offenders, 34 sexually aggressive offenders of adult females and 12 nonviolent nonsex offender controls. Brain length and width was also computed, using the pineal gland as refere...
Article
brain damage and dysfunction resulting from accidents, surgery, epilepsy, and toxic substances, among other causes, have been associated with changes in personality and behavior / one also sees changes in sexual behavior / clinical findings raise the hypothesis of an association between sexual anomalies in general and brain anomalies the temporal...
Article
Pedophiles, sexual aggressives and incest offenders were examined for brain damage and dysfunction using computer tomography (CT) scans, the Halstead-Reitan (HR) Neuropsychological Test Battery, including the Weschsler Adult Intelligence Scale-Revised (WAIS-R), the Wechsler Memory Scale (WMS), and the Space Relations Test (SRT) of the Differential...
Article
Fifteen male exhibitionists were compared to 36 nonviolent, nonsex offender controls on CT brain scans, the Wechsler Adult Intelligence Scale (WAIS-R), and the Halstead-Reitan Neuropsychological Test Battery (HR). The exhibitionists differed from controls only on HR subtests Tactual Performance Total Time, Trail Making Test A, and Aphasia Screening...
Article
Sixteen male genital exhibitionists were compared to nonviolent nonsex offender controls with respect to 9 serum hormones: cortisol, prolactin, dehydroepiandrosterone, estradiol, luteinizing hormone, follicle stimulating hormone, androstenedione, testosterone, sex hormone binding globulin, and two indices of free testosterone. There were group diff...
Article
A total of 118 sex offenders were compared on two measures of violence-proneness (the Clarke Violence Scale or CVS and the Forensic Assessment of Violence or FAV) and the AECOM Coping Scales. The sex offenders were divided into 29 violent and 89 nonviolent cases, based on their criminal histories of sexual and assault offences. Both the CVS and FAV...
Article
The Gender Dysphoria (Gd) Scale developed by Althof, Lothstein, Jones and Shen (1983) was compared in a data base sample of 483 cases. There were 46 gender patients, 383 sexually anomalous patients and 54 community controls. The Gd Scale did show that gender patients had highest scores but there were indistinguishable from homosexuals (androphiles)...
Article
The Gender Dysphoria (Gd) Scale developed by Althof, Lothstein, Jones and Shen (1983) was compared in a data base sample of 483 cases. There were 46 gender patients, 383 sexually anomalous patients and 54 community controls. The Gd Scale did show that gender patients had highest scores but there were indistinguishable from homosexuals (androphiles)...
Article
From a data bank of 479 sex offenders, a comparison was undertaken of those reporting any childhood sexual abuse versus those reporting none. A total of 201 men (42.0%) reported abuse, 261 (54.5%) did not and for 17 (3.5%), information was unavailable. The Abused and Nonabused Groups were compared on demographic information, the MMPI, Clarke Sex Hi...
Article
A total of 118 sex offenders were compared on two measures of violence-proneness (the Clarke Violence Scale or CVS and the Forensic Assessment of Violence or FAV) and the AECOM Coping Scales. The sex offenders were divided into 29 violent and 89 nonviolent cases, based on their criminal histories of sexual and assault offences. Both the CVS and FAV...
Article
A total of 98 sex offenders, including 32 incest offenders, 38 pedophiles, 28 sexual aggressives, and 7 exhibitionists, were compared for defensiveness, assertiveness, aggressiveness, and empathy, employing the Interpersonal Behavior Survey (IBS) and Empathy Scales. The measures overall failed to distinguish defensive and violent sex offenders from...
Article
A total of 98 sex offenders, including 32 incest offenders, 38 pedophiles, 28 sexual aggressives, and 7 exhibitionists, were compared for defensiveness, assertiveness, aggressiveness, and empathy, employing the Interpersonal Behavior Survey (IBS) and Empathy Scales. The measures overall failed to distinguish defensive and violent sex offenders from...
Article
Using data from both a national and a psychiatric survey, it is apparent that stranger killers, in most respects, are similar to acquaintance killers. Stranger killer tended to be somewhat younger, perhaps reflecting the urgency of sexual needs prominent in some cases, and robbery and sexual assault seemed to be the most important motives for the h...
Article
Positron Emission Tomography (PT) scans of the brain were compared in a sexual sadist and two community controls. The participants heard either an erotic audiotape or a sexually neutral tape while penile circumference was monitored. Results showed reliable penile differences between erotic and neutral stimuli. PT results showed that the right hemis...
Article
Twenty-six pedophiles and 16 nonviolent nonsex offenders were compared on baseline values of Luteinizing hormone (LH), follicle stimulating hormone (FSH), testosterone, estradiol, dehydroenpiandrosterone sulphate (DHEAS) and cortisol. Pedophiles had significantly higher levels of LH and FSH but lower levels of testosterone. There were no significan...
Article
Twenty-six pedophiles and 16 nonviolent nonsex offenders were compared on baseline values of Luteinizing hormone (LH), follicle stimulating hormone (FSH), testosterone, estradiol, dehydroenpiandrosterone sulphate (DHEAS) and cortisol. Pedophiles had significantly higher levels of LH and FSH but lower levels of testosterone. There were no significan...
Article
Ninety-one incest perpetrators were compared to 36 nonviolent nonsex offenders for the presence of neuropsychological impairment. The WAIS-R, Halstead-Reitan battery, and CT scans of the brain were used. The sex offenders were also examined for the presence of substance abuse, violence, pedophilia, and biological relationship to the victim. Incest...
Article
A total of 279 men were asked about their purchase of erotic magazines, rental of videos and attendance at erotic movies. There were 131 sex offenders and 50 community controls from Alberta and 97 sex offenders from Ontario. In line with results from previous commissions on the subject, community volunteers reported greater exposure to erotica than...
Article
Eighty-seven sex offenders being assessed pretrial and presentence or posttrial for probation/parole were administered a questionnaire inquiring about desire for treatment, acceptable types of treatment and the nature of any problems, as perceived by the offenders. Three groups were examined: sexual aggressors against adult females, incest perpetra...
Article
Eighty-seven sex offenders being assessed pretrial and presentence or posttrial for probation/parole were administered a questionnaire inquiring about desire for treatment, acceptable types of treatment and the nature of any problems, as perceived by the offenders. Three groups were examined: sexual aggressors against adult females, incest perpetra...
Article
Thirteen sex killers were compared to 13 nonsex killers and 13 nonhomicidal sexually aggressive men on sexual history, substance abuse, history of violence, mental illness and personality, brain pathology and endocrine abnormalities. There were more similarities among the three groups than differences. Among the findings, the presence of transvesti...
Article
Endocrine functioning in sadists, nonsadistic sexual aggressives and criminal controls was examined in two studies. In Study 1 baseline values for 8 hormones and 2 indices of free testosterone were compared. There were no statistically significant group differences, although some cases showed abnormalities. In Study 2, the ACTH test was performed....
Article
Test properties of the Millon Clinical Multiaxial Inventory (MCMI) were examined in a sample of 419 sex offenders and controls in three different settings. The offender group included sexual aggressives, pedophiles, incest perpetrators and miscellaneous cases. Nineteen of the 20 scales of the MCMI had alpha reliability over 0.60 and for 13 scales i...
Article
Twenty-nine incest and 22 heterosexual pedophilic offenders, under sentence, participated in a study of therapeutic outcome. Results showed the two groups were remarkably similar in their pretreatment level of psychosocial functioning. However, pedophiles had a significantly higher recidivism rate than incestuous men. Incest offenders, on the whole...
Article
Fifty-one men charged with or convicted of sexual assault on an adult female were compared with thirty-six controls consisting of nonviolent, nonsex offenders using the Luria-Nebraska Neuropsychological Test Battery, WAIS and CT scans. The sexual assaulters were classified as twenty-two sadists and twenty-one nonsadists on the basis of clinical int...
Article
Test properties of the Millon Clinical Multiaxial Inventory (MCMI) were examined in a sample of 419 sex offenders and controls in three different settings. The offender group included sexual aggressives, pedophiles, incest perpetrators and miscellaneous cases. Nineteen of the 20 scales of the MCMI had alpha reliability over 0.60 and for 13 scales i...
Article
The result of the hormone concentration of one blood sample was used to determine the accuracy of predicting not only the hormone concentrations of a second and third sample drawn 15 minutes apart, but also the mean value of the three samples. Three blood specimens from 73 men involved in two previously reported studies (A and B) were assayed indiv...
Article
The behavior of sadists is bizarre and poorly understood. There are gross endocrine and brain abnormalities in a small number of these men. Approximately two-fifths show subtle temporal lobe brain abnormalities that are logically linked to sexual behavior and require further exploration. It would be interesting to explore the interface of the endoc...
Article
The result of the hormone concentration of one blood sample was used to determine the accuracy of predicting not only the hormone concentrations of a second and third sample drawn 15minutes apart, but also the mean value of the three samples. Three blood specimens from 73 men involved in two previously reported studies (A and B) were assayed indivi...
Article
A sample of 100 men accused of sexual assault on a child and referred to a forensic clinic were approached for assessment and treatment in a double blind study of MPA (Provera). A total of 48 men completed assessment and 18 agreed to participate in the drug trial. Only 11 completed a 3-month course of MPA or placebo therapy. Those refusing treatmen...
Article
Endocrine functioning in sadists, nonsadistic sexual aggressives and criminal controls was examined in two studies. In Study 1 baseline values for 8 hormones and 2 indices of free testosterone were compared. There were no statistically significant group differences, although some cases showed abnormalities. In Study 2, the ACTH test was performed....
Article
Neuropsychological functioning, diagnoses, and substance abuse were compared among killers, nonhomicidal assaulters, and nonviolent offender controls. The Reitan and Luria-Nebraska Neuropsychological test batteries, the WAIS-R, CT scans, and EEGs were examined with a trend to more neuropathology found in killers and assaulters than in controls. The...
Article
A study of hormonal levels of violent and nonviolent offenders failed to establish any significant differences among murderers, assaulters, and controls. While the results do not suggest a contributory role for random blood hormone levels in facilitating aggressive behavior, further study of complex interactions is necessary to rule out endocrinolo...
Article
Four groups of serving prisoners, 29 murderers, 30 assaulters, 51 armed robbers, and 25 nonviolent controls, were compared on measures of personality, demographic variables, and past history of violence. The measures were selected to examine the range of personality dimensions and factors considered important in violent offenders, to compare their...
Article
34 male exhibitionists and 20 nonviolent non-sex-offender controls were compared on measures of gender identity and sexual and criminal history. Results indicate that 41% of exhibitionists were transvestitic; gender identity was masculine and not significantly different from controls. Exhibitionists engaged in a variety of other sexually anomalous...
Article
Compared 15 heterosexual, 14 homosexual, and 10 bisexual male pedophiles (mean age 39 yrs) to 14 nonviolent nonsex offenders (mean age 25 yrs), using the Halstead-Reitan Neuropsychological Test Battery, the Luria-Nebraska Neuropsychological Battery, the Wechsler Adult Intelligence Scale (WAIS), and computerized tomography scans. Ss were classified...
Article
The main treatment problem of pedophilia is motivating the offender to change. Reasons for the perpetrator's resistance to therapy and strategies for motivating them to change are discussed. Current assumptions about the etiology of this sexual anomaly are examined. Results from a databank of sex offenders are reviewed to show that it is uncommon f...
Chapter
In order to better understand the many sexual anomalies that involve the wearing of or at least the use of women’s attire by men, it is instructive to examine what clothes mean to the average person. Anthropologists long have recognized that throughout history almost all societies have a division of labor that is based on age and on sex. In many cu...
Article
Administered a parent–child relations (PCR) questionnaire to 109 killers, 38 nonviolent offenders, and 54 normal controls and obtained medical record information on Ss. Results show that killers had disturbed PCR but they did not differ from nonviolent offenders. The extreme violence reported in uncontrolled homicide research was not supported in t...
Article
Arsonists seen for psychiatric assessment were compared to property offenders and to violent offenders on a number of clinical measures. It was found that arsonists were a mixture of the two groups but the majority aligned with property offenders in personality, diagnosis, criminal and violence history, family background, alcohol and drug use as we...
Article
109 killers, 38 nonviolent offenders and 54 community controls were compared on psychiatric diagnosis, the MMPI, Cattell 16 PF, IQ and clinical neurological results. Killers did not differ from nonviolent offenders on diagnosis or personality in general. Only higher MMPI Hysteria scale scores differentiated the killers from the other groups. IQ ten...
Article
The use of alcohol and drugs at the time of offence, suicide attempts and situational strains were compared in 109 killers and 38 nonviolent offenders seen for psychiatric assessment. More killers than nonviolent offenders used alcohol and drugs at the time of their offence but there was no difference in previous attempts at suicide nor in situatio...
Article
The use of alcohol and drugs at the time of offence, suicide attempts and situational strains were compared in 109 killers and 38 nonviolent offenders seen for psychiatric assessment. More killers than nonviolent offenders used alcohol and drugs at the time of their offence but there was no difference in previous attempts at suicide nor in situatio...
Article
Three experimental studies are reported. The first examined assertion therapy, Provera (Medroxyprogesterone) and sex of therapist on drop-out rate and recidivism in male genital exhibitionists. The other two studies were double blind comparisons of Provera and placebo administered for one week to exhibitionists and three weeks to normals. The resul...
Article
Several studies are reported which examine the critical stimuli and responses as well as personality factors important in genital exhibitionism. Using penile volume measurement, sex history questionnaires, personality tests, and behavioral observations, it was found that (1) exhibitionists responded most to mature females and were comparable to nor...
Article
Our earlier Femine Gender Identity Scale for males appear to measure a strong single factor which was reliable and displayed substantial discriminant validity. However, the number of items was small and there was substantial overlap between items with respect to their meaning. In an attempt to overcome these limitations, in the present study the sc...
Article
The development of a 225-item sexual history questionnaire is reported. The frequency, desire for, and disgust for a wide range of sexual behaviors, including anomalous behavior, were examined. Twenty-four scales were derived from factor analysis of the items. The scales were represented by modest unitary factors but were relatively free of bias fr...
Article
The clinical profiles of five male groups were compared: transsexuals who live as females (FEM), those who live as males (MAL), homosexual patients (HOP), homosexual controls (HOC), and heterosexual controls (CON). The MAL group showed psychotic features on the MMPI and a greater frequency of suicide attempts than the other groups. Their sexual beh...
Article
To date very little is known about pedophilia, i.e., an erotic preference for children, and with the exception of the work of Mohr et al. (1964) and Gebhard et al. (1965) little systematic effort has been devoted to investigating this condition. In a search for differences between persons who erotically prefer physically mature partners and those w...
Article
Presents 2 studies of psychotic art both of which examine the influence of art experience and intelligence in the Ss and (b) reliability in the raters, factors generally overlooked in such studies. In Study 1, 31 hospitalized schizophrenics were compared with 19 normal controls. A list of formal features of painting was constructed, especially thos...
Article
Androphilic, ephebophilic, and homosexual pedophilic males were compared on heterosexual interest and arousal potential. The former was measured by the subjects' retrospective reports and the latter by penile responses to pictures of females. The penile responses of the ephebophilic and homosexual pedophilic groups to pictures of physically mature...