Publications

*BIG Lab trainee

In Press and Online First Ahead of Print

Bogaert, A. F., Skorska, M. N., Wang, C., Gabrie, J., MacNeil, A. J., Hoffarth, M., VanderLaan, D. P., Zucker, K. J., & Blanchard, R. (2017). Male homosexuality and maternal immune responsivity to the Y-linked protein NLGN4Y. Proceedings of the National Academy of Sciences, USA. In press.

Drummond, K. D., Bradley, S. J., Peterson-Badali, M., VanderLaan, D. P., & Zucker, K. J. (2017). Behavior problems and psychiatric diagnoses in girls with gender identity disorder: A follow-up study. Journal of Sex and Marital Therapy. In press.

Petterson, L. J., VanderLaan, D. P., Persson, T., & Vasey, P. L. (2016). The relationship between indicators of depression and anxiety and sexual orientation in Canadian women. Archives of Sexual Behavior. In press.

Swift-Gallant, A., *Coome, L. A., Monks, D. A., & VanderLaan, D. P. (2017). Gender nonconformity and birth order in relation to anal sex role among gay men. Archives of Sexual Behavior. doi:10.1007/s10508-017-0980-y

VanderLaan, D. P., *Santarossa, A., *Nabbijohn, A. N., Wood, H., Owen-Anderson, A., & Zucker, K. J. (2017). Separation anxiety among birth-assigned male children in a specialty gender identity service. European Child and Adolescent Psychiatry. In press.

VanderLaan, D. P., & Vasey, P. L. (2017). Kin selection hypothesis. In T. Shackelford & V. Weekes-Shackelford (Eds.), Encyclopedia of Evolutionary Psychological Science (in press). New York: Springer.

VanderLaan, D. P., & Zucker, K. J. (2017). Gender dysphoria in children and adolescents. In M. H. Ebert, J. F. Leckman, & I. Petrakis (Eds.), Current diagnosis and treatment psychiatry (third edition). California: McGraw-Hill. In press.

Vasey, P. L., & VanderLaan, D. P. (2017). Fa’afafine. In T. Shackelford & V. Weekes-Shackelford (Eds.), Encyclopedia of Evolutionary Psychological Science (in press). New York: Springer.

2017

Berchard, M., VanderLaan, D. P., Wood, H., Wasserman, L., & Zucker, K. J. (2017). Psychosocial and psychiatric vulnerability in adolescents with gender dysphoria: A “proof of principle” study. Journal of Sex and Marital Therapy, 43, 678-688. doi:10.1080/0092623X.2016.1232325

*Hughes, S. K., VanderLaan, D. P., Blanchard, R., Wood, H., Wasserman, L., & Zucker, K. J. (2017). The prevalence of only-child status among children and adolescents referred to a gender identity service vs. a clinical comparison group. Journal of Sex and Marital Therapy, 43, 586-593. doi:10.1080/0092623X.2016.1208702

Petterson, L. J., VanderLaan, D. P., & Vasey, P. L. (2017). Sex, sexual orientation, gender atypicality and traits of depression and anxiety in childhood and adulthood. Archives of Sexual Behavior, 46, 1383-1392. doi:10.1007/s10508-016-0690-x

Semenyna, S. W., Petterson, L. J., VanderLaan, D. P., & Vasey, P. L. (2017). A comparison of the reproductive output among the relatives of Samoan androphilic fa’afafine and gynephilic men. Archives of Sexual Behavior, 46, 87-93. doi:10.1007/s10508-016-0765-8

Semenyna, S. W., VanderLaan, D. P., Petterson, L. J., & Vasey, P. L. (2017). Familial patterning and prevalence of male androphilia in Samoa. Journal of Sex Research, 54, 1077-1084. doi:10.1080/00224499.2016.1218416

Semenyna, S. W., VanderLaan, D. P., & Vasey, P. L. (2017). Birth order and recalled childhood gender nonconformity in Samoan men and fa’afafine. Developmental Psychobiology, 59,  338-347. doi:10.1002/dev.21498

Skorska, M. N., Blanchard, R., VanderLaan, D. P., Zucker, K. J., & Bogaert, A. F. (2017). Gay male only-children: Evidence for low birth weight and high maternal miscarriages. Archives of Sexual Behavior, 46, 205-215. doi:10.1007/s10508-016-0829-9

Swift-Gallant, A., *Coome, L. A., Monks, D. A., & VanderLaan, D. P. (2017). Handedness is a biomarker of variation in anal sex role behavior and recalled childhood gender nonconformity among gay men. PLoS ONE, 12, e0170241. doi:10.1371/journal.pone.0170241

VanderLaan, D. P., Blanchard, R., Zucker, K. J., Massuda, R., Vaitses Fontanari, A. M., Oliviera Borba, A., Brandelli Costa, A., Abel Schneider, M., Mueller, A., Machado Borba Soll, B., Schwarz, K., Cardoso da Silva, D., & Inês Rodrigues Lobato, M. (2017). Birth order and androphilic male-to-female transsexualism in Brazil. Journal of Biosocial Science, 49, 527-535. doi:10.1017/S0021932016000584

VanderLaan, D. P., Petterson, L. J., & Vasey, P. L. (2017). Elevated kin-directed altruism emerges in childhood and is linked to feminine gender expression: A retrospective study of Samoan fa’afafine. Archives of Sexual Behavior, 46, 95-108. doi:10.1007/s10508-016-0884-2

Zucker, K. J., *Nabbijohn, A. N., *Santarossa, A., Wood, H., Bradley, S. J., *Matthews, J., & VanderLaan, D. P. (2017). Intense/obsessional interests in children with gender dysphoria: A cross-validation study using the Teacher's Report Form. Child and Adolescent Psychiatry and Mental Health, 11. doi:10.1186/s13034-017-0189-9

2016

Aitken, M., VanderLaan, D. P., Wasserman, L., Stojanovski, S., & Zucker, K. J. (2016). Self-harm and suicidality in children referred for gender dysphoria. Journal of the American Academy of Child and Adolescent Psychiatry, 55, 513-520. doi:10.1016/j.jaac.2016.04.001

de Vries, A. L. C., Steensma, T. D., Cohen-Kettenis, P. T., VanderLaan, D. P., & Zucker, K. J. (2016). Poor peer relations predict parent- and self-reported behavioral and emotional problems of adolescents with gender dysphoria: A cross-national, cross-clinic comparative analysis. European Child and Adolescent Psychiatry, 25, 579-588. doi:10.1007/s00787-015-0764-7

Shiffman, M., VanderLaan, D. P., Wood, H., Hughes, S. K., Owen-Anderson, A., Lumley, M. M., Lollis, S. P., & Zucker, K. J. (2016). Behavioral and emotional problems as a function of peer relationships in adolescents with gender dysphoria: A comparison with clinical and nonclinical controls. Psychology of Sexual Orientation and Gender Diversity, 3, 27-36. http://dx.doi.org/10.1037/sgd0000152

VanderLaan, D. P., Petterson, L. J., & Vasey, P. L. (2016). Femininity and kin-directed altruism in androphilic men: A test of an evolutionary developmental model. Archives of Sexual Behavior, 45, 619-633. doi:10.1007/s10508-015-0632-z

Vasey, P. L., VanderLaan, D. P., Hames, R. B., & Jaidee, A. (2016). A Problematic Test of the Kin Selection Hypothesis among the Urak-Lawoi of Ko Lipeh, Thailand: Commentary on Camperio Ciani, Battaglia, & Liotta (2015).  Journal of Sex Research, 53, 149-152.

Zucker, K. J., & VanderLaan, D. P. (2016). The self in gender dysphoria: A developmental perspective. In M. Kyrios, S. Bhar, G. Doron, M. Mikulincer, R. Moulding, and M. Nedeljkovic (Eds.), The self in understanding and treating psychological disorders (pp. 222-232). Cambridge: Cambridge University Press.

Zucker, K. J., Wood, H., Wasserman, L., VanderLaan, D. P., & Aitken, M. (2016). Comment on Chen, Fuqua, and Eugster’s (2016) “Characteristics of Referrals for    Gender Dysphoria Over a 13-Year Period.” Journal of Adolescent Health, 58, 693-694.

2015

Aitken, M., Steensma, T. D., Blanchard, R., VanderLaan, D. P., Wood, H., Fuentes, A., Spegg, C., Wasserman, L., Ames, M., Fitzsimmons, C. L., Leef, J. H., Lishak, V., Reim, E., Takagi, A., Vinik, J., Wreford, J., Cohen-Kettenis, P. T., de Vries, A. L. C., Kreukels, B. P. C., & Zucker, K. J. (2015). Evidence for an altered sex ratio in clinic‐referred adolescents with gender dysphoria. Journal of Sexual Medicine, 12, 756-763. doi:10.1111/jsm.12817.  

Blanchard, R., & VanderLaan, D. P. (2015). Commentary on Kishida and Rahman (2015), including a meta-analysis of relevant studies on fraternal birth order and sexual orientation in men [Invited Commentary]. Archives of Sexual Behavior, 44, 1503-1509. doi:10.1007/s10508-015-0555-8.  

VanderLaan, D. P., Blanchard, R., Wood, H., Garzon, L. C., & Zucker, K. J. (2015). Birth weight and two possible types of maternal effects on male sexual orientation: A clinical study of children and adolescents referred to a gender identity service. Developmental Psychobiology, 57, 25-34. doi:10.1002/dev.21254.  

VanderLaan, D. P., Leef, J. H., Wood, H., Hughes, S. K., & Zucker, K. J. (2015). Autism spectrum disorder risk factors and autistic traits in gender dysphoric children. Journal of Autism and Developmental Disorders, 45, 1742-1750. doi:10.1007/s10803-014-2331-3.  

VanderLaan, D. P., Petterson, L. J., Mallard, R. W., & Vasey, P. L. (2015). (Trans)Gender role expectations and child care in Samoa. Journal of Sex Research, 52, 710-720. doi:10.1080/00224499.2014.884210.  

VanderLaan, D. P., Petterson, L. J., & Vasey, P. L. (2015). Elevated childhood separation anxiety: An early developmental expression of heightened concern for kin in homosexual men? Personality and Individual Differences, 81, 188-194. doi:10.1016/j.paid.2014.03.018.  

VanderLaan, D. P., Postema, L., Wood, H., Singh, D., Fantus, S., Hyun, J., Leef, J., Bradley, S. J., & Zucker, K. J. (2015). Do children with gender dysphoria have intense/obsessional interests? Journal of Sex Research, 52, 213-219. doi:10.1080/00224499.2013.860073

Vasey, P. L., & VanderLaan, D. P. (2015). Evolutionary developmental perspectives on male androphilia. In V. Zeigler-Hill, L. M. Welling, & T. K. Shackelford (Eds.), Evolutionary perspectives of social psychology (pp. 333-343). New York: Springer.

2014

Abild, M. L., VanderLaan, D. P., & Vasey, P. L. (2014). Does geographic proximity influence the expression of avuncular tendencies in Canadian androphilic males? Journal of Cognition and Culture, 14, 41-63. doi:10.1163/15685373-12342109.  

Steensma, T. D., Zucker, K. J., Kreukels, B. P. C., VanderLaan, D. P., Wood, H., Fuentes, A., & Cohen-Kettenis, P. T. (2014). Behavioral and emotional problems on the Teacher’s Report Form: A cross-national, cross-clinic comparative analysis of gender dysphoric children and adolescents. Journal of Abnormal Child Psychology, 42, 635-647. doi:10.1007/s10802-013-9804-2.  

VanderLaan, D. P., Garfield, Z. H., Garfield, M. J., Leca, J., Vasey, P. L., & Hames, R. B. (2014). The “female fertility–social stratification–hypergyny” hypothesis of male homosexual preference: Factual, conceptual and methodological errors in Barthes et al. [Commentary]. Evolution and Human Behavior, 35, 445-447. 10.1016/j.evolhumbehav.2014.06.002.  

VanderLaan, D. P., & Vasey, P. L. (2014). Evidence of cognitive biases for maximizing indirect fitness in Samoan fa’afafine. Archives of Sexual Behavior, 43, 1009-1022. doi:10.1007/s10508-014-0288-0.  

VanderLaan, D. P., Blanchard, R., Wood, H., & Zucker, K. J. (2014). Birth order and sibling sex ratio of children and adolescents referred to a gender identity service. PLoS ONE, 9, e90257. doi:10.1371/journal.pone.0090257.  

Vasey, P. L., & VanderLaan, D. P. (2014). Evolving research on the evolution of male androphilia. Canadian Journal of Human Sexuality, 23, 137-147. doi:10.3138/cjhs.23.3-co1.  

Vasey, P. L., & VanderLaan, D. P. (2014). Transgendered male androphilia in the human ancestral environment. In T. Shackelford, & R. Hanson (Eds.), The evolution of human sexuality (pp. 185-206). New York: Springer.

Vasey, P. L. & VanderLaan, D. P. (2014). Evolutionary perspectives on male androphilia in humans. In V. Weekes-     Shackelford & T. Shackelford (Eds.), Evolutionary perspectives on human sexual psychology and behavior, (pp. 369-391). New York: Springer.

Zucker, K. J., Wood, H., & VanderLaan, D. P. (2014). Models of psychopathology in children and adolescents with gender dysphoria. In B. P. C. Kreukels, T. D. Steensma, & A. L. C. de Vries (Eds.), Gender dysphoria and disorders of sex development: Progress in care and knowledge (pp. 171-192). New York: Springer.  

2013

Abild, M. L., VanderLaan, D. P., & Vasey, P. L. (2013). No evidence for treating friends’ children like kin in Canadian androphilic men. Journal of Sex Research, 50, 697-703.

VanderLaan, D. P., Forrester, D. L., Petterson, L. J., & Vasey, P. L. (2013). The prevalence of fa’afafine relatives among Samoan gynephilic men and fa’afafine. Archives of Sexual Behavior, 42, 353-359. doi:10.1007/s10508-012-0015-7.  

VanderLaan, D. P., Ren, Z., & Vasey, P. L. (2013). Male androphilia in the ancestral environment: An ethnological analysis. Human Nature, 24, 375-401. doi:10.1007/s12110-013-9182-z.  [Awarded the Annual Foundation for the Scientific Study of Sexuality Ira and Harriet Reiss Theory Award for the most significant theoretical advance in social science theories concerning human sexuality.]

VanderLaan, D. P., & Vasey, P. L. (2013). Birth order and avuncular tendencies in Samoan men and fa’afafine. Archives of Sexual Behavior, 42, 371-379. doi:10.1007/s10508-012-0039-z. 

VanderLaan, D. P., Vokey, J. R., & Vasey, P. L. (2013). Is transgendered male androphilia familial in non-Western populations? The case of a Samoan village. Archives of Sexual Behavior, 42, 361-370. 10.1007/s10508-012-0037-1.  

2012

VanderLaan, D. P., & Vasey, P. L. (2012). Relationship status and elevated avuncularity in Samoan fa’afafine. Personal Relationships, 19, 326-339. doi:10.1111/j.1475-6811.2011.01364.x.  

VanderLaan, D. P., Forrester, D. L., Petterson, L. J., & Vasey, P. L. (2012). Offspring production among the extended relatives of Samoan men and fa'afafine. PLoS ONE, 7, e36088. doi:10.1371/journal.pone.0036088.  

VanderLaan, D. P., Pellis, S. M., & Vasey, P. L. (2012). A theoretical model of the development and evolution of non-conceptive mounting behaviour in Japanese Macaques. In J. B. Leca, M. A. Huffman, & P. L. Vasey (Eds.), The monkeys of Stormy Mountain: Sixty years of research at Arashiyama, (pp. 186-203). Cambridge: Cambridge University Press.  

Vasey, P. L., & VanderLaan, D. P. (2012). Is female homosexual behaviour in Japanese Macaques truly sexual? In J. B. Leca, M. A. Huffman, & P. L. Vasey (Eds.), The monkeys of Stormy Mountain: Sixty years of research at Arashiyama, (pp. 153-185). Cambridge: Cambridge University Press. 

Vasey, P. L., & VanderLaan, D. P. (2012). Sexual orientation in men and avuncularity in Japan: Implications for the kin selection hypothesis. Archives of Sexual Behavior, 41, 209-215. doi:10.1007/s10508-011-9763-z.  

2011

Forrester, D. L., VanderLaan, D. P., Parker, J. L., & Vasey, P. L. (2011). Male sexual orientation and avuncularity in Canada: Implications for the kin selection hypothesis. Journal of Cognition and Culture, 11, 339–352. doi:10.1163/156853711X591288.  

VanderLaan, D. P. (2011). M. Siegelman (2006), An evolutionary theory and celebration of male sexual arousal by females: The foundations of male heterosexuality [Book Review]. Archives of Sexual Behavior, 40, 1051-1052. doi:10.1007/s10508-011-9828-z.  

VanderLaan, D. P., & Vasey, P. L. (2011). Male sexual orientation in Independent Samoa: Evidence for fraternal birth order and maternal fecundity effects. Archives of Sexual Behavior, 40, 495-503. doi:10.1007/s10508-009-9576-5.  

VanderLaan, D. P., Gothreau, L. M., Bartlett, N. H., & Vasey, P. L. (2011). Separation anxiety in feminine boys: Pathological or prosocial? Journal of Gay & Lesbian Mental Health, 15, 30-45. doi:10.1080/19359705.2011.530570.  

VanderLaan, D. P., Gothreau, L. M., Bartlett, N. H., & Vasey, P. L. (2011). Recalled separation anxiety and gender atypicality in childhood: A study of Canadian heterosexual and homosexual men and women. Archives of Sexual Behavior, 40, 1233-1240. doi:10.1007/s10508-010-9695-z.  

Vasey, P. L., VanderLaan, D. P., Gothreau, L. M., & Bartlett, N. H. (2011). Traits of separation anxiety in childhood: A retrospective study of Samoan men, women, and fa’afafine. Archives of Sexual Behavior, 40, 511-517. doi:10.1007/s10508-009-9589-0.  

2010

Reinhart, C. J., Pellis, V. C., Thierry, B., Gauthier, C., VanderLaan, D. P., Vasey, P. L., & Pellis, S. M. (2010). Targets and tactics of play fighting: Competitive versus cooperative styles of play in Japanese and Tonkean macaques. International Journal of Comparative Psychology, 23, 166-200.  

Vasey, P. L., & VanderLaan, D. P. (2010). Avuncular tendencies and the evolution of male androphilia in Samoan fa’afafine. Archives of Sexual Behavior, 39, 821-830. doi:10.1007/s10508-008-9404-3.  

Vasey, P. L., & VanderLaan, D. P. (2010). Monetary exchanges with nieces and nephews: A comparison of Samoan men, women, and fa'afafine. Evolution and Human Behavior, 31, 373-380. doi:10.1016/j.evolhumbehav.2010.04.001d.  

Vasey, P. L., & VanderLaan, D. P. (2010). An adaptive cognitive dissociation between willingness to help kin and nonkin in Samoan fa'afafine. Psychological Science, 21, 292-297. doi:10.1177/0956797609359623.  

2009

Bartlett, N. H., Patterson, H. M., VanderLaan, D. P., & Vasey, P. L. (2009). The relation between women's body esteem and friendships with gay men. Body Image, 6, 235-241. doi:10.1016/j.bodyim.2009.04.005.  

VanderLaan, D. P., & Vasey, P. L. (2009). Patterns of sexual coercion in heterosexual and non-heterosexual men and women. Archives of Sexual Behavior, 38, 987-999. doi:10.1007/s10508-009-9480-z.  

Vasey, P. L., & VanderLaan, D. P. (2009). Materteral and avuncular tendencies in Samoa: A comparative study of women, men, and fa’afafine. Human Nature, 20, 269-281. doi:10.1007/s12110-009-9066-4.  

Vasey, P. L., & VanderLaan, D. P. (2009). Kin selection and the evolution of male androphilia [Letter to the Editor]. Archives of Sexual Behavior, 38, 170-171.

Vasey, P. L., & VanderLaan, D. P. (2009). A factual correction to Zietsch et al. (2008) [Commentary]. Evolution and Human Behavior, 30, 152.

2008

VanderLaan, D. P., & Vasey, P. L. (2008). Mate retention behavior of men and women in heterosexual and homosexual relationships. Archives of Sexual Behavior, 37, 572-585. doi:10.1007/s10508-006-9139-y.  

VanderLaan, D. P., & Vasey, P. L. (2008). G. Wilson & Q. Rahman (2005), Born gay: The psychobiology of sex orientation [Book Review]. Archives of Sexual Behavior, 37, 673–674. doi:10.1007/s10508-008-9373-6. 

Vasey, P. L., & VanderLaan, D. P. (2008). R. Totman (2003), The third sex—Kathoey: Thailand’s ladyboys [Book Review]. Archives of Sexual Behavior, 37, 671-672. doi:10.1007/s10508-008-9368-3.  

Vasey, P. L., VanderLaan, D. P., Rains, D., Duckworth, N., & Kovacovsky, S. D. (2008). Inter-mount social interactions during heterosexual and homosexual consortships in Japanese macaques. Ethology, 114, 564-574. doi:10.1111/j.1439-0310.2008.01502.x.

Vasey, P. L., Rains, D., VanderLaan, D. P., Duckworth, N., & Kovacovsky, S. D. (2008). Courtship behaviour in Japanese macaques during heterosexual and homosexual consortships. Behavioural Processes, 78, 401-407. doi:10.1016/j.beproc.2008.02.006.

2007

Vasey, P. L., & VanderLaan, D. P. (2007). Birth order and male androphilia in Samoan fa'afafine. Proceedings of the Royal Society B: Biological Sciences, 274, 1437-1442. doi:10.1098/rspb.2007.0120.

Vasey, P. L., Pocock, D. S., & VanderLaan, D. P. (2007). Kin selection and male androphilia in Samoan fa'afafine. Evolution and Human Behavior, 28, 159-167. doi:10.1016/j.evolhumbehav.2006.08.004.

 

Presentations

Below is a list of selected presentations:

Plenary Addresses

2015

VanderLaan, D. P. (November) The development and evolution of male androphilia: Insights from over a decade of cross-cultural research. Plenary Address. Society for the Scientific Study of Sexuality. Albuquerque, New Mexico, United States of America.

Invited Presentations:

2015      

VanderLaan, D. P. (September) Gender dysphoria and autism spectrum disorder in children. Invited lecture. Developmental Interest Group. University of Toronto, Toronto, Ontario, Canada.

VanderLaan, D. P. (October) Autism spectrum disorder and gender dyphoria in children: Is there a link and, if so, why? Invited Lecture. Department of Psychology Invited Lectures. Oakland University, Rochester, Michigan, USA.

VanderLaan, D. P. (October) The development and evolution of male androphilia: A cross-cultural analysis. Invited Lecture. Department of Psychology Invited Lectures. Oakland University, Rochester, Michigan, USA.

VanderLaan, D. P., Blanchard, R., Skorska, M., Zucker, K. J., & Bogaert, A. F. (July) Possible separate etiology of homosexual in gay male only-children. Paper presentation. Puzzle of Sexual Orientation. University of Lethbridge, Lethbridge, Alberta, Canada.

VanderLaan, D. P., Leef, J. H., Wood, H., Hughes, S. K., & Zucker, K. J. (July) Recent progress in establishing and explaining the link between gender dysphoria and autism spectrum disorder in children. Paper presentation. Puzzle of Sexual Orientation. University of Lethbridge, Lethbridge, Alberta, Canada.

VanderLaan, D. P. (January) Something’s got to give: How do we limit the negative impacts of social stigma toward cross-sex behavior and identity? Paper presentation. Science of Sex Discussion Panel Series. University of Toronto—Mississauga, Mississauga, Ontario, Canada.

2013      

VanderLaan, D. P. (January) The development and evolution of male homosexuality: A cross-cultural analysis. Department of Psychology Speaker Series. Brock University, St. Catharines, Ontario, Canada.

2012      

VanderLaan, D. P. (June) The evolution of the homosexual brain. Canadian Centre for Behavioural Neuroscience Summer Speaker Series. University of Lethbridge, Lethbridge, Alberta, Canada.

Conference and Symposium Presentations:

2015      

VanderLaan, D. P., Lobaugh, N. J., Chakravarty, M. M., Patel, R., Chavez, S. Stojanovski, S. O., Takagi, A., Hughes, S. K., Wasserman, L., Bain, J., Cantor, J. M., & Zucker, K. J. (August). The neurohormonal hypothesis of gender dysphoria: Preliminary evidence of cortical surface area differences in adolescent natal females. Poster presentation. International Academy of Sex Research. Toronto, Ontario, Canada.

VanderLaan, D. P., Leef, J. H., Wood, H., Hughes, S. K., & Zucker, K. J. (October) Social communication deficits in gender dysphoric children: Associations with birth weight, parental age, and sibling sex ratio. Paper presentation. Canadian Sex Research Forum. Kingston, Ontario, Canada.

2013      

VanderLaan, D. P., Blanchard, R., Wood, H., & Zucker, K. J. (October) Is There More Than One Type of Maternal Immune Effect on Sexual Orientation? Paper Presentation. Canadian Sex Research Forum. Charlottetown, Prince Edward Island, Canada.

2012      

VanderLaan, D. P., & Vasey, P. L. (September) Male androphilia in the ancestral past: An ethnological analysis. Paper Presentation. Canadian Sex Research Forum. University of Ottawa, Ottawa, Ontario, Canada.

VanderLaan, D. P., & Vasey, P. L. (June) Male androphilia in the ancestral past: An examination of cross-species and cross-cultural evidence. Paper Presentation. Human Behavior and Evolution Society. University of New Mexico, Albuquerque, New Mexico, United States of America.