Publications
In Press and Online Ahead of Print
Leca, J-B. & Vasey, P.L.
Comparative evidence. In: Shackelford, T.K. & Weekes-Shackelford, V.A. (eds.), Encyclopedia of Evolutionary Psychological Science. NY: Springer.
Petterson, L.J, Dixson, B.J., Little, A.C., Vasey, P.L.
Viewing time and self-report measures of sexual attraction in Samoan cisgender and transgender androphilic males. Archives of Sexual Behavior, 47.
Petterson, L.J. & Vasey, P.L.
The homosexual paradox—cross-cultural studies. In: Shackelford, T.K. & Weekes-Shackelford, V.A. (eds.), Encyclopedia of Evolutionary Psychological Science. NY: Springer.
Semenyna, S.W. & Vasey, P.L.
Prestige striving and avuncular behavior in Samoan fa’afafine. Journal of Homosexuality.
VanderLaan, D.P. & Vasey, P.L.
Kin selection hypothesis. In: Shackelford, T.K. & Weekes-Shackelford, V.A. (eds.), Encyclopedia of Evolutionary Psychological Science. NY: Springer.
Vasey, P.L., Petterson, L.J., Semenyna, S.W., Gómez, F.R., & VanderLaan, D.P.
Kin selection and the evolution of male androphilia. In: Workman, L., Reader, W. & Barkow, J. (eds), Cambridge Handbook of Evolutionary Perspectives on Human Behavior. Cambridge, UK: Cambridge University Press.
Vasey, P.L. & VanderLaan, D.P.
Fa’afafine. In: Shackelford, T.K. & Weekes-Shackelford, V.A. (eds.), Encyclopedia of Evolutionary Psychological Science. NY: Springer.
In Print (Selected)
2019
Semenyna, S.W., Honey, P.L., & Vasey, P.L.
Replicating the relationship between Dark Triad traits and female mate competition tactics in
undergraduate women. Personality and Individual Difference, 147, 73-78.
2018
Petterson, L.J, Dixson, B.J., Little, A.C., Vasey, P.L.
Viewing time and self-report measures of sexual attraction in Samoan cisgender and transgender androphilic males. Archives of Sexual Behavior, 47, 2427-2434.
Leca, J-B., Shimizu, K., Huffman, M.A., Takahata, Y., Gunst, N., & Vasey, P.L.
Hormonal contraceptive affects heterosexual but not homosexual behavior in free-ranging female Japanese macaques over 17 mating seasons. Hormones and Behavior, 105, 166-176.
Gunst, N., Vasey, P.L., Leca, J-B.
Deer mates: Heterospecific sexual beahviors performed by Japanese macaques toward Sika deer – A Quantitative Study. Archives of Sexual Behavior. 47: 847-856.
Petterson, L.J, VanderLaan, D.P., Persson, T.J. & Vasey, P.L.
The relationship between indicators of depression and anxiety and sexual orientation in Canadian women. Archives of Sexual Behavior, 47: 1173-1182.
Gómez, F.R., Semenyna, S., Court, L. & Vasey, P.L.
Familial clustering of male androphilia among Istmo Zapotec men and muxe. PLoS ONE., 13(2): e0192683. https://doi.org/10.1371/journal.pone.0192683
Semenyna, S. W., Belu, C. F., Vasey, P. L., & Honey, P. L. (2018). Not straight and not straightforward: Sexual orientation, sociosexuality, and Dark Triad traits among women. Evolutionary Psychological Science, 4: 345-352.
2017
Playà, E. Vinicius, L., & Vasey, P.L.
Need for alloparental care and attitudes toward homosexuals in 58 countries: Implications for the Kin Selection Hypothesis. Evolutionary Psychological Science, 3: 345-352.
Semenyna, S., Patterson, L.J. & VanderLaan, D.P. & Vasey, P.L.
Familial patterning and prevalence of male androphilia in Samoa. Journal of Sex Research, 54:
1077-1084.
Semenyna, S. & Vasey, P.L.
Bullying, physical aggression, gender atypicality, and sexual orientation in Samoan males. Archives of
Sexual Behavior, 46: 1375-1381
Petterson, L.J., VanderLaan, D.P. & Vasey, P.L.
Sex, sexual orientation, gender atypicality, and traits of depression and anxiety in childhood and adulthood. Archives of Sexual Behavior, 46: 1383-1392.
Semenyna, S., VanderLaan, D.P. & Vasey, P.L. Birth order and recalled gender nonconformity in Samoan
men and fa’afafine. Developmental Psychobiology, 59: 338-347
Gómez, F.R., Semenyna, S.W., Court, L. & Vasey, P.L.
Recalled separation anxiety in childhood in Istmo Zapotec men, women, and muxes. Archives of Sexual Behavior, 46, 109-117.
Petterson, L.J, Wrightson, C. & Vasey, P.L.
A retrospective study of childhood gender-atypical behavior in Japanese androphilic males. Archives of Sexual Behavior, 46: 119-127.
Semenyna, S., Petterson, L.J., VanderLaan, D.P. & Vasey, P.L.
A comparison of the reproductive output among the relatives of Samoan androphilic fa’afafine and
gynephilic men. Archives of Sexual Behavior, 46: 87-93.
VanderLaan, D.P., Petterson, L.J., & Vasey, P.L. Elevated kin-directed altruism emerges in childhood and is
linked to feminine gender expression in Samoan fa’afafine: A retrospective study. Archives of Sexual
Behavior, 46: 95-108.
Vasey, P.L. Introduction to the special section: The puzzle of sexual orientation: What is it and how does it
work. Archives of Sexual Behavior, 46: 59-61.
2016
Gunst, N., Forteau, A.M., Philbert, S., Vasey, P.L. & Leca, J.-B.
Decline in population density and group size of mona monkeys in Grenada: Implications for the conservation of non-native primate species. Primate Conservation, 30: 7-13.
Semenyna, S. & Vasey, P.L.
Sex and male sexual orientation differences in occupational preferences in Samoa. Human Nature, 27:
283-295.
Leca, J-B., Gunst, N., Pelletier, A., Vasey, P.L., Nahallage, C., Watanabe, K. & Huffman, M.
A multidisciplinary view on cultural primatology: Behavioral innovations and traditions in
Japanese macaques. Primates, 57: 333-338.
Li, F., Rendall, D., Vasey, P.L., Kinsman, M., Ward-Sutherland, A., Diano, G.
The development of sex/gender-specific /s/ and its relationship to gender identity in children and
adolescents. Journal of Phonetics, 57: 59-70.
VanderLaan, D.P., Petterson, L.J. & Vasey, P.L.
Femininity and kin-directed altruism in homosexual men: A test of an evolutionary developmental model.
Archives of Sexual Behavior, 45: 619-633.
Bailey, M.J., Vasey, P.L., Diamond, L., Breedlove, M. Villain, E. & Epprecht, M.
Sexual orientation, controversy and science. Psychological Science in the Public Interest, 17:
45-101.
MacFarlane, G.R. & Vasey, P.L.
Promiscuous primates engage in same-sex genital interactions. Behavioral Processes, 126:
21-26.
Vasey, P.L., VanderLaan, D.P., Hames, R. & Jaidee, A.
A problematic test of the kin selection hypothesis among the Urak-Lawoi of Ko Lipe,
Thailand: Commentary on Camperio Ciani, Battaglia, & Liotta (2015). Journal of Sex
Research, 53: 149-152.
Petterson, L.J., Dixson, B.J., Little, A.C., & Vasey, P.L.
Reconsidering Male Bisexuality: Sexual Activity Role and Sexual Attraction in Samoan Men
Who Engage in Sexual Interactions with Fa’afafine. Journal of Sexual Orientation and
Gender Diversity, 3: 11-26.
2015
Leca, J-B., Gunst, N., Huffman, M.A. & Vasey, P.L.
Effect of female-biased sex ratios on female homosexual behavior in Japanese macaques:
Evidence for the “Bisexual Preference Hypothesis.” Archives of Sexual Behavior, 44: 2125-2138.
Semenyna, S. & Vasey, P.L. (2015). Victimization due to bullying and physical aggression in Samoan men and women. Personality and Individual Differences, 87: 85-89.
Ottenheimer Carrier, Leca, J.-B., Pellis, S. & Vasey, P.L. (2015). A structural comparison of female-male and female-female mounting in Japanese macaques (Macaca fuscata). Behavioural Processes, 119: 70-75.
Leca, J-B., Gunst, N., & Vasey, P.L. (2015). Comparative development of heterosexual and homosexual behaviors in free-ranging female Japanese macaques. Archives of Sexual Behavior, 44: 1215-1231.
VanderLaan, D.P., Petterson, L.J., Mallard, R. & Vasey, P.L. (2015). (Trans)gender role expectations and childcare in Samoa. Journal of Sex Research, 52: 710-720.
Vasey, P.L. & VanderLaan, D.P. (2015). Evolutionary developmental perspectives on male androphilia in humans. In: Zeigler-Hill, V. Welling, L. & Shakelford, T. (eds.), Evolutionary Perspectives on Social Psychology, pp. 333-343. NY: Springer.
Vasey, P.L. & Forrester, D.L. (2015). Homosexuality in non-human and human primates. In: Whelehan, P. & Bolin, A. (eds.), The International Encyclopedia of Human Sexuality, pp. 553-556. NY: Wiley -Blackwell. (in press).
Gunst, N., Leca, J-B., & Vasey, P.L. (2015). Influence of sexual competition and social context on homosexual behavior in adolescent female Japanese macaques. American Journal of Primatology, 77: 502-515.
Vasey, P.L. (2015). Sex, gender and sexuality in Samoa. Box essay in: Hyde, J. S., DeLamater, J. D., & Byers, E. S. Understanding human sexuality, 6th Canadian edition, pp. 370-371. Toronto: McGraw Hill Ryerson.
Vasey, P.L. (2015). What can the Samoan fa’afafine teach us about Western concepts of gender identity?. Box essay in: Rathus, S.A., Nevid, J.S., Fichner-Rathus, L., Heroid, E.S., & McKay, A. Human Sexuality in a World of Diversity: 5th Canadian edition. Toronto: Pearson Education Canada.
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.
Petterson, L.J, Dixson, B.J., Little, A.C. & Vasey, P.L. (2015). Viewing time measures of sexual orientation in Samoan cisgender men who engage in sexual interactions with fa’fafine. PLoS ONE, 10(2): e0116529. http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0116529
2014
Vasey, P.L. & VanderLaan, D.P. (2014). Evolving research on the evolution of male androphilia. Canadian Journal of Human Sexuality, 23: 137-147.
Vasey, P.L., Leca, J-B., Gunst, N. & VanderLaan, D.P. (2014). Female homosexual behavior and inter-sexual mate competition in Japanese macaques: Possible implications for sexual selection theory. Neuroscience and Biobehavioral Reviews, 46: 573-578.
Vasey, P.L. & VanderLaan, D.P. (2014). Transgendered male androphilia in the human ancestral environment. In: Shakelford, T. & Hanson, R. (eds.), The Evolution of Human Sexuality, pp.185-206. NY: Springer.
VanderLaan, D.P., Garfield, Z.H., Garfield, M.J, Leca, J-B., Vasey, P.L., Leca, J-B., & Hames R.B. (2014). The “Female Fertility-Social Stratification-Hypergyny” Hypothesis of Male Homosexual Preference: Factual, Conceptual and Methodological Errors in Barthes et al. Evolution and Human Behavior, 35: 445-447.
Leca, J-B., Gunst, N., Ottenheimer-Carrier, L. & Vasey, P.L. (2014). Intergroup variation in non-conceptive mounting behavior in Japanese macaques: Could it be cultural? Animal Behavior and Cognition, 1(3): 381-405.
Leca, J-B., Gunst, N., & Vasey, P.L. (2014). Development of sexual behaviors in female Japanese macaques. Developmental Psychobiology, 56: 1999-1213.
Leca, J-B., Gunst, N., & Vasey, P.L. (2014). Male homosexual behavior in an all-male group of Japanese macaques at Minoo, Japan. Archives of Sexual Behavior, 43: 853-861.
VanderLaan, D.P. & Vasey, P. L. (2014). Evidence of enhanced cognitive biases for maximizing indirect fitness in Samoan fa’afafine, Archives of Sexual Behavior, 43: 1009-1022,
Vasey, P.L. & VanderLaan, D.P. (2014). Evolutionary perspectives on male androphilia in humans. In: Weekes-Shackelford, V. & Shakelford, T. (eds), Evolutionary Perspectives on Human Sexual Psychology and Behavior, pp. 369-392. NY: Springer.
Terry, L.L. & Vasey, P.L. (2014). Feederism. In: Copes, H. & Forsyth, C.J. (eds.), Encyclopedia of Social Deviance, pp. 269-270. Thousand Oaks, CA: Sage.
Vasey, P.L.(2014). In the Manner of a Bad Girl. Atrium: The Report of the Northwestern Medical Humanities and Bioethics Program, 12: 10-11. (Reprinted in Chicago’s Chi-Chapter Tribune 53(6): 14-15).
Vasey, P.L., Parker, J.L, & VanderLaan, D.P. (2014). Comparative reproductive output of androphilic and gynephilic males in Samoa. Archives of Sexual Behavior, 43: 363-367.
Abild, M.L., VanderLaan, D.P. & Vasey, P.L. (2014). Does proximity influence the expression of avuncular tendencies in Canadian androphilic males? Journal of Cognition and Culture,14: 41-63.
2013
VanderLaan, D.P., Ren, Z. & Vasey, P.L. (2013). Male androphilia in the ancestral environment: An ethnological analysis. Human Nature, 24: 375-401. (Winner of the Ira & Harriet Riess Theory Award for best theoretical contribution to sexology in 2013).
Günst, N., Leca, J-B, & Vasey, P.L. (2013). Development of heterosexual and socio-sexual mounting in free-ranging juvenile male Japanese macaques (Macaca fuscata). Behaviour, 150: 1225-1254.
Abild, M., 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.
Dawson, S. J., Lalumière, M. L., Allen, S. W., Vasey, P. L., & Suschinsky, K.D. (2013). Can habituation of sexual responses be elicited in men and women when attentional commitment is maintained? Canadian Journal of Behavioural Science, 45: 274-285.
Vasey, P.L. & Abild, M. (2013). A Billion Wicked Thoughts (book review). Archives of Sexual Behavior, 42: 1101-1103.
Dixson, B.J., Vasey, P.L. & Brooks, R. (2013). The evolution of the human beard. Journal of Comparative Human Biology, 64: 146.
VanderLaan, D.P., Forrester, D.L., Petterson, LJ. & Vasey, P. L. (2013). The prevalence of fa’afafine relatives among Samoan men and fa’afafine. Archives of Sexual Behavior, 42: 353-359.
VanderLaan, D.P., Vokey, J.R. & Vasey, P.L. (2013). Is male androphilia familial in non Western cultures? The case of a Samoan village. Archives of Sexual Behavior, 42: 361-370.
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.
2012
Dixson, B.J. & Vasey, P.L. (2012) Sexual selection and the evolution of the beard: A cross-
cultural study. Behavioral Ecology, 23: 481-490.
VanderLaan, D. P. & Vasey, P. L. (2012). Relationship status and elevated avuncularity in
Samoan fa’afafine. Personal Relationships, 19: 326-339.
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(4): e36088. DOI:
101371/journal.pone.0036088.
Vasey, P.L. & Lalumière, M.L. (2012). The Puzzle of Sexual Orientation: What is it and how
does it work? Archives of Sexual Behavior, 41: 11-12.
Terry, L.L., Suschinsky, K.D., Lalumière, M.L. & Vasey, P.L. (2012. Feederism: An
exaggeration of a normative mate selection strategy. Archives of Sexual Behavior, 41: 249-260.
Vasey, P.L. & VanderLaan, D.P. (2012). Male sexual orientation and avuncularity in Japan:
Implications for the Kin Selection Hypothesis. Archives of Sexual Behavior, 41: 209-215.
Toyota, A., Günst, N., Leca, J-B., Ishiguro, R., Vasey, P.L. & Shimizu, K. (2012). Reproductive
hormones and sexual behavior in aged female Japanese macaques—Preliminary data.
Primate Research, 28: 28.
Leca, J.B., Huffman, M.J., & Vasey, P.L. (2012). The Monkeys of Stormy Mountain: Over Half
a Century of Research on the Arashiyama Macaques. Cambridge: Cambridge University Press.
Leca, J.B., Huffman, M.A, & Vasey, P.L. (2012). Introduction. In: Leca, J.B., Huffman, M.J.,
& Vasey, P.L. (eds.). The Monkeys of Stormy Mountain: Over Half a Century of Research
on the Arashiyama Macaques, pp. 1-10. Cambridge: Cambridge University Press.
Huffman, M.A., Fedigan, L.M., Vasey, P.L. & Leca, J.B. (2012). A brief historical time-line
of research on the Arashiyama macaques. In: Leca, J.B., Huffman, M.J., & Vasey, P.L.
(eds.). The Monkeys of Stormy Mountain: Over Half a Century of Research on the
Arashiyama Macaques, 13-27. Cambridge: Cambridge University Press
Vasey, P.L. & VanderLaan, D.P. (2012). Is female homosexual behaviour in Japanese macaque
truly sexual? In: Leca, J.B., Huffman, M.J., & Vasey, P.L. (eds.). The Monkeys of Stormy
Mountain: Over Half a Century of Research on the Arashiyama Macaques, pp. 153-172.
Cambridge: Cambridge University Press.
VanderLaan, D.P., Pellis, S. & Vasey, P.L. (2012). A theoretical model of the development and
evolution of non-conceptive mounting behavior in Japanese macaques. In: Leca, J.B., Huffman,
M.J., & Vasey, P.L. (eds.). The Monkeys of Stormy Mountain: Over Half a Century of
Research on the Arashiyama Macaques, pp. 186-203. Cambridge: Cambridge University Press.
Russon, A.E. & Vasey, P.L. (2012). Eye covering play in Japanese macaques and orangutans.
In: Leca, J.B., Huffman, M.J., & Vasey, P.L. (eds.). The Monkeys of Stormy Mountain: Over
Half a Century of Research on the Arashiyama Macaques, p. 293-302. Cambridge: Cambridge
University Press.
2011
Dixson, B.J., Vasey, P.L. & Sagata, K., Sibanda, N., Linklater, W.L. & Dixson, A.F. (2011).
Male preferences for female breast morphology in New Zealand, Samoa, and the Highlands
of Papua New Guinea. Archives of Sexual Behavior. 40: 1271-1279.
VanderLaan, D. P., Gothreau, L., 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.
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 Culture
and Cognition, 11: 339-352.
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.
Terry, L.L. & Vasey, P.L. (2011). A case report of feederism in a women. Archives of Sexual
Behavior, 40: 639-645.
Vasey, P. L., VanderLaan, D.P., Gothreau, L., &, Bartlett, N. H. (2011). Traits of separation
anxiety in childhood: A comparison of Samoan men, women and fa’afafine. Archives of Sexual
Behavior, 40: 511-517.
VanderLaan, D. P., Gothreau, L., Bartlett, N.H. & Vasey, P.L. (2011). Separation anxiety in
feminine boys: Pathological or prosocial? Journal of Gay and Lesbian Mental Health, 15: 1-16.
2010
Vasey, P.L. & Jiskoot, H. (2010). The biogeography and evolution of female homosexual
behavior in Japanese macaques. Archives of Sexual Behavior, 39: 1439-1441.
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.
MacFarlane, G.R., Blomberg, S.P. & Vasey, P.L. (2010). Homosexual behavior in
birds: Frequency of expression is related to sex-specific relative parental care. Animal
Behaviour, 80: 375-390.
Vasey, P.L. & VanderLaan, D.P. (2010). Avuncular tendencies in Samoan fa’afafine and the
evolution of male androphila. Archives of Sexual Behavior, 39, 821-830. (Selected as a
“Editor’s choice” recommended reading by the journal Editor).
Reinhart, C.J., Pellis, V.C., Thierry, B., Gauthier, C-A, 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). An adaptive cognitive dissociation between
willingness to help kin and non-kin in Samoan fa’afafine. Psychological Science, 21: 292-297.
Vasey, P.L. (2010). Are female Japanese macaques that engage in homosexual behaviour
masculinized? Behavioural and neuroanatomical evidence. Primate Research, 26: 69.
VanderLaan, D.P., Pellis, S.M. & Vasey, P.L. (2010). Mounting and social play in juvenile
male Japanese macaques. Primate Research, 26: 70.
2009
VanderLaan, D.P. & Vasey, P.L. (2009). Patterns of sexual coercion in heterosexuals and non-
heterosexual men and women. Archives of Sexual Behavior, 38: 987-999.
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. (A photo
accompanying this article was featured on the journal cover).
Bartlett, N.H., Patterson, H. VanderLaan, D.P. & Vasey, P.L. (2009). The relation between
women’s body esteem and friendships with gay men. Body Image, 6: 235-241.
Vasey, P.L. & Reinhart, C. (2009). Female homosexual behavior in a new group of Japanese
macaques: Evolutionary implications. Laboratory Primate Newsletter, 48(3): 8-10.
2008
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.
VanderLaan, D.P. & Vasey, P.L. (2008). Mate retention behaviour of men and women in
homosexual and heterosexual relationships. Archives of Sexual Behavior, 37: 572-585.
Vasey, P.L., Rains, D., VanderLaan, D.P., Duckworth, N., & Kovacovsky, S.D. (2008).
Courtship behavior during heterosexual and homosexual consortships in Japanese macaques.
Behavioural Processes, 78: 401-407.
Rendall, D., Vasey, P.L. & MacKenzie, J. (2008). The Queen’s English: An alternative, bio-
social hypothesis for the distinctive features of homosexual speech. Archives of Sexual
Behavior, 37: 188-204.
Vasey, P.L. & Duckworth, N. (2008). Female-male mounting in Japanese macaques: The
proximate role of sexual reward. Behavioural Processes, 77: 405-407. (Selected as a
“recommended article” by the journal Editors).
2007
Vasey, P.L. & Bartlett, N.H. (2007). What can the Samoan fa’afafine teach us about the
Western concept of “Gender Identity Disorder in Childhood”? Perspectives in Biology and
Medicine, 50: 481-490.
Vasey, P.L. & VanderLaan, D.P. (2007). Birth order and male androphilia in Samoan
fa’afafine. Proceedings of the Royal Society of London, Series B, 274: 1437-1442.
Vasey, P.L., Pocock, D.S., & VanderLaan, D.P. (2007). Kin selection and male androphilia
in Samoan fa’afafine. Evolution & Human Behavior, 28: 159-167.
Vasey, P.L. (2007). Function & phylogeny: The evolution of same-sex sexual behaviour
in primates. Journal of Psychology & Human Sexuality, 18: 215-244.
Dreger, A.D. & Vasey, P.L. (2007). Sex, gender and sexual diversity. Perspectives in Biology
& Medicine, 5: 489-490.
2006
Bartlett, N.B. & Vasey , P.L. (2006). A retrospective study of childhood gender-atypical
behavior in Samoan fa’afafine Archives of Sexual Behavior, 35: 559-566.
Vasey, P.L. & Duckworth, N. (2006). Sexual reward via vulvar, perineal and anal stimulation:
A proximate mechanism for female homosexual mounting in Japanese macaques. Archives of
Sexual Behavior, 35: 523-532.
Vasey, P.L., Foroud, A., Duckworth, N. & Kovacovsky, S.D. (2006). Male-female and female-
female mounting in Japanese macaques: A comparative analysis of posture and movement.
Archives of Sexual Behavior, 35: 116-128.
Sommer, V. & Vasey, P.L. (2006). Homosexual Behaviour in Animals: An Evolutionary
Perspective. Cambridge University Press: Cambridge.
Vasey, P.L. & Sommer, V. (2006). Homosexual behaviour in animals: Topics, hypotheses and
research trajectories. In: Sommer, V. & Vasey, P.L. (eds.), Homosexual Behaviour in Animals:
An Evolutionary Perspective, pp. 3-44. Cambridge: Cambridge University Press.
Vasey, P.L. (2006). The pursuit of pleasure: Homosexual behaviour, sexual reward and
evolutionary history in Japanese macaques. In: Sommer, V. & Vasey, P.L. (eds.), Homosexual
Behaviour in Animals: An Evolutionary Perspective, pp. 191-219. Cambridge: Cambridge
University Press.
Vasey, P.L. (2006). Where do we go from here? Research on the evolution of homosexual
behaviour in animals. In: Sommer, V. & Vasey, P.L. (eds.), Homosexual Behaviour in Animals:
An Evolutionary Perspective, pp. 349-364. Cambridge: Cambridge University Press.
Earlier publications (Selected)
Vasey, P.L. & Pfaus, J.G. (2005). A sexually dimorphic hypothalamic nucleus in a macaque
species with frequent female-female mounting and same-sex sexual partner preference.
Behavioural Brain Research, 157: 265-272.
Vasey, P.L. (2004). Sex differences in sexual partner acquisition, retention and harassment
during female homosexual consortships in Japanese macaques. American Journal of
Primatology, 64: 397-409.
Vasey, P.L. (2004). Pre- and post-conflict interactions between female Japanese macaques
during homosexual consortships. International Journal of Comparative Psychology, 17:
351-359.
Bartlett, N.H., Vasey, P.L., Bukowski, W.M. (2003). Cross-sex wishes and gender identity
disorder in children. Sex Roles, 49: 191-2.
Vasey, P.L. (2002). Same-sex sexual partner preference in hormonally and neurologically
unmanipulated animals. Annual Review of Sex Research, 13: 141-179.
Vasey, P.L. (2002). Sexual partner preference in female Japanese macaques. Archives of
Sexual Behavior, 31: 45-56. (This article was chosen as notable in the Anthropological C
Currents section of Current Anthropology [2003] 4: 152.
Bartlett, N.H., Vasey, P.L. & Bukowski, W.M. (2000). Is gender identity disorder in children a
mental disorder? Sex Roles, 43: 753-785.
Vasey, P.L. & Gauthier, C. (2000). Skewed sex ratios and female homosexual activity in
Japanese macaques: An experimental analysis. Primates, 41: 17-25.
Vasey, P.L. (1998). Female choice and inter-sexual competition for female sexual partners in
Japanese macaques. Behaviour, 135: 579-597.
Vasey, P.L., Chapais, B., Gauthier, C. (1998). Mounting Interactions between female Japanese
macaques: Testing the influence of dominance and aggression. Ethology, 104: 387-398.
Chapais, B., Gauthier, C., Prud'homme, J. & Vasey, P.L. (1997). Relatedness threshold for
nepotism in Japanese macaques. Animal Behaviour, 53: 1089-1101.
Vasey, P.L. (1996). Interventions and alliance formation between female Japanese macaques
(Macaca fuscata) during homosexual consortships. Animal Behaviour, 52: 539-551.
Vasey, P.L. (1995). Homosexual behaviour in primates: A review of evidence and theory.
International Journal of Primatology, 16: 173-203.
