R Blanchard

Summary

Affiliation: Centre for Addiction and Mental Health
Country: Canada

Publications

  1. ncbi How many gay men owe their sexual orientation to fraternal birth order?
    James M Cantor
    Centre for Addiction and Mental Health, Toronto, Ontario, Canada
    Arch Sex Behav 31:63-71. 2002
  2. ncbi Sex ratio of older siblings in heterosexual and homosexual, right-handed and non-right-handed men
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, M5T 1R8, Canada
    Arch Sex Behav 37:977-81. 2008
  3. ncbi Older-sibling and younger-sibling sex ratios in Frisch and Hviid's (2006) national cohort study of two million Danes
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, M5T 1R8, Canada
    Arch Sex Behav 36:860-3; discussion 864-7. 2007
  4. pmc Sexual attraction to others: a comparison of two models of alloerotic responding in men
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, 250 College Street, Toronto, ON, M5T 1R8, Canada
    Arch Sex Behav 41:13-29. 2012
  5. ncbi IQ, handedness, and pedophilia in adult male patients stratified by referral source
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, Toronto, ON, Canada
    Sex Abuse 19:285-309. 2007
  6. ncbi Self-reported head injuries before and after age 13 in pedophilic and nonpedophilic men referred for clinical assessment
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
    Arch Sex Behav 32:573-81. 2003
  7. ncbi The sex ratio of older siblings in non-right-handed homosexual men
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, College Street Site, 250 College Street, Toronto, Ontario, M5T 1R8, Canada
    Arch Sex Behav 37:970-6. 2008
  8. doi Deconstructing the feminine essence narrative
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, 250 College Street, Toronto, ON, Canada M5T 1R8
    Arch Sex Behav 37:434-8; discussion 505-10. 2008
  9. ncbi Proportion of homosexual men who owe their sexual orientation to fraternal birth order: An estimate based on two national probability samples
    Ray Blanchard
    Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
    Am J Hum Biol 16:151-7. 2004
  10. ncbi Quantitative and theoretical analyses of the relation between older brothers and homosexuality in men
    Ray Blanchard
    Centre for Addiction and Mental Health, Clarke Site, 250 College Street, Toronto, Ont, Canada, M5T 1R8
    J Theor Biol 230:173-87. 2004

Detail Information

Publications52

  1. ncbi How many gay men owe their sexual orientation to fraternal birth order?
    James M Cantor
    Centre for Addiction and Mental Health, Toronto, Ontario, Canada
    Arch Sex Behav 31:63-71. 2002
    ..5 older brothers. Implications are suggested for the gay sib-pair linkage method of identifying genetic loci for homosexuality...
  2. ncbi Sex ratio of older siblings in heterosexual and homosexual, right-handed and non-right-handed men
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, M5T 1R8, Canada
    Arch Sex Behav 37:977-81. 2008
    ..These results suggest that both heterosexual and homosexual non-right-handers contribute to the older brothers x handedness x sexual orientation interaction...
  3. ncbi Older-sibling and younger-sibling sex ratios in Frisch and Hviid's (2006) national cohort study of two million Danes
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, M5T 1R8, Canada
    Arch Sex Behav 36:860-3; discussion 864-7. 2007
    ..It is unclear what implications, if any, Frisch and Hviid's findings have for the study of sexual orientation in general...
  4. pmc Sexual attraction to others: a comparison of two models of alloerotic responding in men
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, 250 College Street, Toronto, ON, M5T 1R8, Canada
    Arch Sex Behav 41:13-29. 2012
    ..The subjects were 2,278 male patients referred to a specialty clinic for phallometric assessment of their erotic preferences. Comparisons of goodness of fit to the observed data favored the unidimensional bipolar model...
  5. ncbi IQ, handedness, and pedophilia in adult male patients stratified by referral source
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, Toronto, ON, Canada
    Sex Abuse 19:285-309. 2007
    ..The findings were interpreted as evidence for the hypothesis that neurodevelopmental perturbations increase the risk of pedophilia in males...
  6. ncbi Self-reported head injuries before and after age 13 in pedophilic and nonpedophilic men referred for clinical assessment
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
    Arch Sex Behav 32:573-81. 2003
    ....
  7. ncbi The sex ratio of older siblings in non-right-handed homosexual men
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, College Street Site, 250 College Street, Toronto, Ontario, M5T 1R8, Canada
    Arch Sex Behav 37:970-6. 2008
    ..g., mental retardation, major mental illness) that makes him less likely to be available for research recruitment at Gay Pride parades (etc.) than other members of the gay community...
  8. doi Deconstructing the feminine essence narrative
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, 250 College Street, Toronto, ON, Canada M5T 1R8
    Arch Sex Behav 37:434-8; discussion 505-10. 2008
  9. ncbi Proportion of homosexual men who owe their sexual orientation to fraternal birth order: An estimate based on two national probability samples
    Ray Blanchard
    Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
    Am J Hum Biol 16:151-7. 2004
    ....
  10. ncbi Quantitative and theoretical analyses of the relation between older brothers and homosexuality in men
    Ray Blanchard
    Centre for Addiction and Mental Health, Clarke Site, 250 College Street, Toronto, Ont, Canada, M5T 1R8
    J Theor Biol 230:173-87. 2004
    ....
  11. ncbi Early history of the concept of autogynephilia
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health College Street Site, 250 College Street, Toronto, Ontario, M5T 1R8, Canada
    Arch Sex Behav 34:439-46. 2005
    ..To fill this terminological and conceptual gap, the writer introduced the term autogynephilia(love of oneself as a woman)...
  12. ncbi Review and theory of handedness, birth order, and homosexuality in men
    Ray Blanchard
    Centre for Addiction and Mental Health, Toronto, ON, Canada
    Laterality 13:51-70. 2008
    ..Two possibilities are considered: (1) non-right-handed foetuses are insensitive to the presence of maternal anti-male antibodies, and (2) mothers of non-right-handed foetuses do not produce anti-male antibodies...
  13. ncbi Interaction of fraternal birth order and handedness in the development of male homosexuality
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, Toronto, ON, Canada
    Horm Behav 49:405-14. 2006
    ....
  14. ncbi The strength of sexual arousal as a function of the age of the sex offender: comparisons among pedophiles, hebephiles, and teleiophiles
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
    Sex Abuse 17:441-56. 2005
    ..The results showed that sexual arousability was an inverse function of age, and that there were no differences between the pedophiles, hebephiles, and teleiophiles in the rate at which arousability declined...
  15. ncbi Phallometric comparison of pedophilic interest in nonadmitting sexual offenders against stepdaughters, biological daughters, other biologically related girls, and unrelated girls
    Ray Blanchard
    Centre for Addiction and Mental Health, College Street Site, Toronto, Ontario, Canada
    Sex Abuse 18:1-14. 2006
    ....
  16. ncbi Supplementary analyses regarding Langevin, Langevin, and Curnoe's (2007) findings on fraternal birth order in homosexual men
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, M5T 1R8, Canada
    Arch Sex Behav 36:610-4; discussion 615-6. 2007
    ..These results suggest that Langevin et al.'s data showed significant evidence of a fraternal birth order effect and that their data were consistent with previous studies of this phenomenon...
  17. ncbi Birth order, sibling sex ratio, handedness, and sexual orientation of male and female participants in a BBC internet research project
    Ray Blanchard
    Centre for Addiction and Mental Health, Law and Mental Health Program, 250 College Street, Toronto, Ontario, M5T 1R8, Canada
    Arch Sex Behav 36:163-76. 2007
    ..In the former subsample, the right-handed homo/bisexual males showed the typical high ratio of older brothers to older sisters, whereas the non-right-handed homo/bisexual males did not...
  18. doi The DSM diagnostic criteria for transvestic fetishism
    Ray Blanchard
    Kurt Freund Laboratory, Law and Mental Health Program, Centre for Addiction and Mental Health, 250 College St, Toronto, ON M5T 1R8, Canada
    Arch Sex Behav 39:363-72. 2010
    ..In the second part, he presents a secondary analysis of a pre-existing dataset in order to investigate the utility of the proposed specifiers...
  19. doi The DSM diagnostic criteria for pedophilia
    Ray Blanchard
    Kurt Freund Laboratory, Law and Mental Health Program, Centre for Addiction and Mental Health, 250 College Street, Toronto, ON M5T 1R8, Canada
    Arch Sex Behav 39:304-16. 2010
    ..It therefore seems that the current (i.e., DSM-IV-TR) diagnostic criteria need to be examined with an openness to major changes in the DSM-V...
  20. ncbi Fraternal birth order and sexual orientation in pedophiles
    R Blanchard
    Centre for Addiction and Mental Health, Toronto, Ontario, Canada
    Arch Sex Behav 29:463-78. 2000
    ..An alternative explanation in terms of canalization of development is suggested...
  21. doi Absolute versus relative ascertainment of pedophilia in men
    Ray Blanchard
    Centre for Addiction and Mental Health, Toronto, Ontario, Canada
    Sex Abuse 21:431-41. 2009
    ..These results dramatically demonstrate the utility-or perhaps necessity-of relative ascertainment in the laboratory assessment of erotic age-preference...
  22. ncbi Retrospective self-reports of childhood accidents causing unconsciousness in phallometrically diagnosed pedophiles
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
    Arch Sex Behav 31:511-26. 2002
    ..This finding suggests that pedophilia may be influenced by genetic factors, which are manifested in women as an increased risk of psychiatric problems, and in their sons, as an increased risk of erotic interest in children...
  23. ncbi Fraternal birth order and birth weight in probably prehomosexual feminine boys
    Ray Blanchard
    Centre for Addiction and Mental Health Clarke Site, 250 College Street, Toronto, Ontario, Canada M5T 1R8
    Horm Behav 41:321-7. 2002
    ....
  24. ncbi Fraternal birth order and the maternal immune hypothesis of male homosexuality
    R Blanchard
    Centre for Addiction and Mental Health Clarke Site, Department of Psychiatry, Faculty of Medicine, University of Toronto, 250 College Street, Toronto, Ontario M5T 1R8, Canada
    Horm Behav 40:105-14. 2001
    ....
  25. doi Pedophilia, hebephilia, and the DSM-V
    Ray Blanchard
    Law and Mental Health Program, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, Canada
    Arch Sex Behav 38:335-50. 2009
    ..We further recommend that the DSM-V encourage users to record the typical age of children who most attract the patient sexually as well as the gender of children who most attract the patient sexually...
  26. ncbi Sensitivity and specificity of the phallometric test for pedophilia in nonadmitting sex offenders
    R Blanchard
    Centre for Addiction and Mental Health Clarke Division, 250 College Street, Toronto, Ontario M5T 1R8, Canada
    Psychol Assess 13:118-26. 2001
    ..Specificity, calculated for those who had sexual contact with the most women and thus the most evidence of attraction to them, was 96%. Sensitivity, calculated analogously for men with the most offenses against children, was 61%...
  27. doi Sexual arousal to female children in gynephilic men
    Amy D Lykins
    Centre for Addiction and Mental Health, Toronto, Ontario, Canada
    Sex Abuse 22:279-89. 2010
    ..001 for both). Thus, Freund et al.'s results still appear to be valid, and the explanation for child molesting that they suggest still seems to be feasible...
  28. doi The relation between peak response magnitudes and agreement in diagnoses obtained from two different phallometric tests for pedophilia
    Amy D Lykins
    Centre for Addiction and Mental Health, Toronto, Ontario, Canada M5T 1R8
    Sex Abuse 22:42-57. 2010
    ..Results also indicated that at response levels less than 1 cm(3), diagnostic consistency was no better than chance, supporting the establishment of a minimum response level criterion...
  29. ncbi Additive effects of older brothers and homosexual brothers in the prediction of marriage and cohabitation
    R Blanchard
    Clarke Institute of Psychiatry, Toronto, Ontario, Canada
    Behav Genet 27:45-54. 1997
    ....
  30. ncbi Sibling sex ratio of boys with gender identity disorder
    K J Zucker
    Child and Adolescent Gender Identity Clinic, Child and Family Studies Centre, Clarke Institute of Psychiatry, Toronto, Ontario, Canada
    J Child Psychol Psychiatry 38:543-51. 1997
    ..These findings are amenable to several psychosocial and biological explanations, which require further investigation...
  31. ncbi Birth order in girls with gender identity disorder
    K J Zucker
    Child and Adolescent Gender Identity Clinic, Child and Family Studies Centre, Clarke Institute of Psychiatry, Toronto, Ontario, Canada
    Eur Child Adolesc Psychiatry 7:30-5. 1998
    ....
  32. ncbi Pedophiles: mental retardation, maternal age, and sexual orientation
    R Blanchard
    Clinical Sexology Program, Clarke Institute of Psychiatry, Toronto, Ontario, Canada
    Arch Sex Behav 28:111-27. 1999
    ..These two factors summate, so that a pedophile with both factors is more likely to be sexually interested in boys than a pedophile with only one...
  33. ncbi Interaction of birth order, handedness, and sexual orientation in the Kinsey interview data
    Anthony F Bogaert
    Department of Community Health Sciences, Brock University, St Catharines, ON, Canada
    Behav Neurosci 121:845-53. 2007
    ..These results also suggest that biological explanations of men's sexual orientation are likely relevant across time, as the Kinsey data comprise an older cohort relative to modern samples...
  34. ncbi Birth weight, sexual orientation and the sex of preceding siblings
    R Blanchard
    Centre for Addiction and Mental Health-Clarke Division, Toronto, Ontario, Canada
    J Biosoc Sci 33:451-67. 2001
    ....
  35. ncbi H-Y antigen and homosexuality in men
    R Blanchard
    Department of Psychiatry, University of Toronto, Ontario, Canada
    J Theor Biol 185:373-8. 1997
    ....
  36. ncbi A comparison of volume and circumference phallometry: response magnitude and method agreement
    M Kuban
    Clarke Division, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
    Arch Sex Behav 28:345-59. 1999
    ..5-mm circumference increase, should be the minimum response criterion for the circumferential measure...
  37. ncbi Physical height in pedophilic and hebephilic sexual offenders
    James M Cantor
    Law and Mental Health Program, Centre for Addiction and Mental Health, 250 College Street, Toronto, ON, M5T 1R8, Canada
    Sex Abuse 19:395-407. 2007
    ....
  38. ncbi Cerebral white matter deficiencies in pedophilic men
    James M Cantor
    Law and Mental Health Program, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, Canada M5T 1R8
    J Psychiatr Res 42:167-83. 2008
    ....
  39. ncbi Gender and sexual orientation differences in sexual response to sexual activities versus gender of actors in sexual films
    Meredith L Chivers
    Law and Mental Health Program, Centre for Addiction and Mental Health, Toronto, Ontario M6J 1H4, Canada
    J Pers Soc Psychol 93:1108-21. 2007
    ..An unexpected result was that homosexual women responded more to nude female targets exercising and masturbating than to nude male targets, whereas heterosexual women responded about the same to both sexes at each activity level...
  40. ncbi Birth order and sibling sex ratio in homosexual transsexual South Korean men: Effects of the male-preference stopping rule
    Kenneth J Zucker
    Gender Identity Service, Child, Youth, and Family Program, Center for Addiction and Mental Health, Toronto, Ontario, Canada
    Psychiatry Clin Neurosci 61:529-33. 2007
    ..Future studies that examine birth order and sibling sex ratio in non-Western samples of transsexuals need to be vigilant for the influential role of stopping rules, including the one identified in the present study...
  41. ncbi Child pornography offenses are a valid diagnostic indicator of pedophilia
    Michael C Seto
    Centre for Addiction and Mental Health, Toronto, ON, Canada
    J Abnorm Psychol 115:610-5. 2006
    ..The results suggest child pornography offending is a stronger diagnostic indicator of pedophilia than is sexually offending against child victims. Theoretical and clinical implications are discussed...
  42. ncbi Grade failure and special education placement in sexual offenders' educational histories
    James M Cantor
    Law and Mental Health Program, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
    Arch Sex Behav 35:743-51. 2006
    ..These data are consistent with the hypothesis that an erotic age preference for children sometimes results from a perturbation of neurodevelopment occurring early in life...
  43. ncbi Quantitative reanalysis of aggregate data on IQ in sexual offenders
    James M Cantor
    Law and Mental Health Program, Centre for Addiction and Mental Health, Toronto, ON, Canada
    Psychol Bull 131:555-68. 2005
    ..Results confirm the association between IQ and sexual offending and suggest that previous discrepancies are attributable to how many pedophilic individuals were in each sample...
  44. ncbi Handedness in pedophilia and hebephilia
    James M Cantor
    Law and Mental Health Program, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, M5T 1R8, Canada
    Arch Sex Behav 34:447-59. 2005
    ....
  45. ncbi Intelligence, memory, and handedness in pedophilia
    James M Cantor
    Law and Mental Health Program, Centre for Addiction and Mental Health CAMH, Toronto, ON, Canada
    Neuropsychology 18:3-14. 2004
    ..Pedophilia was also related to non-right-handedness even after covarying age and IQ. These results suggest that pedophilia is linked to early neurodevelopmental perturbations...
  46. ncbi Birth order among homosexual men
    Kenneth J Zucker
    Child and Adolescent Gender Identity Clinic, Child Psychiatry Program, ON, Canada
    Psychol Rep 92:117-8. 2003
    ..They did not, however, note a more refined analysis of an earlier null finding by Siegelman. This 1998 reanalysis by Blanchard, Zucker, Siegelman, Dickey, and Klassen also confirmed the later birth order of homosexual men...
  47. ncbi Birth order in the fakafefine
    Kenneth J Zucker
    Child and Adolescent Gender Identity Clinic, Child Psychiatry Program, Center for Addiction and Mental Health Clarke Division, Toronto, Ontario, Canada
    J Sex Marital Ther 29:251-3. 2003
  48. ncbi The development of sexual aggression through the life span: the effect of age on sexual arousal and recidivism among sex offenders
    Howard E Barbaree
    Centre for Addiction and Mental Health, and the University of Toronto, Toronto, Ontario, Canada, M6J 1H4
    Ann N Y Acad Sci 989:59-71; discussion 144-53. 2003
    ..The implications of reductions in sexual aggression with age are discussed in relation to our understanding of the etiology of sexual aggression and our use of actuarial risk assessments...
  49. ncbi The discriminative validity of a phallometric test for pedophilic interests among adolescent sex offenders against children
    M C Seto
    Centre for Addiction and Mental Health, Toronto, Ontario, Canada
    Psychol Assess 12:319-27. 2000
    ..Results suggest phallometric testing can identify pedophilic interests among these adolescent sex offenders...
  50. ncbi Sexual orientation and handedness in men and women: a meta-analysis
    M L Lalumière
    Law and Mental Health Program, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
    Psychol Bull 126:575-92. 2000
    ..The authors discuss 3 possibilities: cerebral laterality and prenatal exposure to sex hormones, maternal immunological reactions to the fetus, and developmental instability...
  51. ncbi The influence of birth order on birth weight: does the sex of preceding siblings matter?
    Karine Côté
    Centre for Addiction and Mental Health and University of Toronto, Toronto, Canada
    J Biosoc Sci 35:455-62. 2003
    ..The relation between older brothers and birth weight may have theoretical significance for behavioural variables...
  52. ncbi Birth order in transgendered males from Polynesia: a quantitative study of Samoan fa'afāfine
    Kris H Poasa
    Department of Psychology and Professional Counseling, Northwest Christian College, Eugene, Oregon
    J Sex Marital Ther 30:13-23. 2004
    ..We consider possible interpretations of the late birth order effect, along with recommendations for further research to identify common mechanisms that might underlie transgenderism across different cultural groups...