Professor Hammack’s current research focuses on sexual and gender identity diversity in social, historical, and political contexts. He is interested in how sexual and gender identity minorities navigate stigma and form identities across the life course. In 2013, Hammack received a Scholar Award from the William T. Grant Foundation to launch the California Community Climates Project on Sexual and Gender Identity Diversity (C3). The C3 Project examines variability in identity and minority stress among teenagers who identify with any sexual or gender identity minority label (e.g., lesbian, pansexual, gay, non-binary, transgender, queer) in two distinct regions of California: one historically supportive of sexual and gender identity diversity (i.e., the San Francisco Bay Area) and one historically hostile (i.e., the Central Valley).
The Generations Project is a multi-site study funded by the National Institute of Child Health and Human Development (NICHD) that uses multiple methods to examine the way in which sexual minorities of distinct generation-cohorts experience identity, stress, and health. Hammack's specific interests within this project lie in the study of narratives of sexual identity development, sexual practices and sexual cultures, intersectionality of social identities, and narratives of social change across generation-cohorts. He is interested in the way in which gay men of distinct generations have experienced shifts in health, identity, and sexual culture as the meaning of HIV/AIDS has changed over time (e.g., the emergence of PrEP for HIV prevention).
The Queer Intimacies Project examines the social and psychological experience of individuals in non-normative relationships, including same-sex, polyamorous, kink/fetish relationships, and chosen families. This project also examines the unique experiences of individuals who identify as transgender, gender non-binary, asexual, bisexual, pansexual, heteroflexible, and sexually fluid in relationships.
Among new projects in development, Hammack is interested in the study of sexual subcultures and diverse forms of masculinity in the context of the contemporary gender revolution.
Hammack continues to be broadly interested in issues of history, theory, and paradigm in psychology. In 2018, he published The Oxford Handbook of Social Psychology and Social Justice (Oxford University Press), part of the Oxford Library of Science.
- Aggression, Conflict, Peace
- Culture and Ethnicity
- Intergroup Relations
- Law and Public Policy
- Political Psychology
- Prejudice and Stereotyping
- Research Methods, Assessment
- Self and Identity
- Sexuality, Sexual Orientation
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- Hammack, P. L. (2011). Narrative and the politics of identity: The cultural psychology of Israeli and Palestinian youth. New York: Oxford University Press.
- Hammack, P. L., & Cohler, B. J. (Ed.). (2009). The story of sexual identity: Narrative perspectives on the gay and lesbian life course. New York: Oxford University Press.
- Hammack, P. L. (2010). Identity as burden or benefit? Youth, historical narrative, and the legacy of political conflict. Human Development, 53, 173-201.
- Hammack, P. L. (2010). Narrating hyphenated selves: Intergroup contact and configurations of identity among young Palestinian citizens of Israel. International Journal of Intercultural Relations, 34(4), 368-385.
- Hammack, P. L. (2010). The cultural psychology of Palestinian youth: A narrative approach. Culture & Psychology, 16(4), 507-537.
- Hammack, P. L. (2010). The political psychology of personal narrative: The case of Barack Obama. Analyses of Social Issues and Public Policy, 10(1), 182-206.
- Hammack, P. L. (2009). Exploring the reproduction of conflict through narrative: Israeli youth motivated to participate in a coexistence program. Peace and Conflict: Journal of Peace Psychology, 15(1), 49-74.
- Hammack, P. L. (2008). Narrative and the cultural psychology of identity. Personality and Social Psychology Review, 12(3), 222-247.
- Hammack, P. L. (2006). Identity, conflict, and coexistence: Life stories of Israeli and Palestinian adolescents. Journal of Adolescent Research, 21(4), 323-369.
- Hammack, P. L. (2005). The life course development of human sexual orientation: An integrative paradigm. Human Development, 48, 267-290.
- Hammack, P. L., & Cohler, B. J. (2011). Narrative, identity, and the politics of exclusion: Social change and the gay and lesbian life course. Sexuality Research and Social Policy, 8, 162-182.
- Hammack, P. L., Pilecki, A., Caspi, N., & Strauss, A. A. (2011). Prevalence and correlates of delegitimization among Jewish Israeli adolescents. Peace and Conflict: Journal of Peace Psychology, 17, 151-178.
- Hammack, P. L., Thompson, E. M., & Pilecki, A. (2009). Configurations of identity among sexual minority youth: Context, desire, and narrative. Journal of Youth and Adolescence, 38, 867-883.
- Hammack, P. L., & Windell, E. P. (2011). Psychology and the politics of same-sex desire in the United States: An analysis of three cases. History of Psychology, 14(3), 220-248.
- Hammack, P. L. (2009). The cultural psychology of American-based coexistence programs for Israeli and Palestinian youth. In C. McGlynn, M. Zembylas, Z. Bekerman, & T. Gallagher (Ed.), Peace education in conflict and post-conflict societies: Comparative perspectives (pp. 127-144). New York: Palgrave Macmillan.
- Adolescence and Youth
- Culture and Identity
- History and Systems of Psychology
- Lesbian, Gay, Bisexual, Transgender, and Queer Psychology
- Paradigms of Culture
- Person, Culture, Society
- Psychology of Prejudice and Intergroup Conflict
- Qualitative Research Methods in the Social Sciences
- Sexual Identity
- Sexual Identity and the Life Course
- Social Psychology of Intergroup Relations
Department of Psychology
University of California, Santa Cruz
1156 High Street
Santa Cruz, California 95064
- Phone: (831) 459-1050
- Fax: (831) 459-3519