Academic Publications

Below are lists of selected books and edited volumes, journal publications, and book chapters to help you learn more about work conducted within our research lab, and with collaborators in other research labs.

Books & Edited Volumes

  1. Tropp, L. R. (Ed.) (2018). Making research matter: A psychologist’s guide to public engagement. APA Books.
  2. Tropp, L. R. (Ed.) (2012). Oxford handbook of intergroup conflict. Oxford University Press.
  3. Pettigrew, T. F., & Tropp, L. R. (2011). When groups meet: The dynamics of intergroup contact. Psychology Press.
  4. Tropp, L. R., & Mallett, R. (Eds.) (2011). Moving beyond prejudice reduction: Pathways to positive intergroup relations. American Psychological Association.
  5. Wagner, U., Tropp, L. R., Finchilescu, G., & Tredoux, C. (Eds.) (2008). Improving intergroup relations: Building on the Legacy of Thomas F. Pettigrew. Wiley-Blackwell.

Journal Publications

  1. Kende, J., Jacobs, D., Green, E.G.T., Tropp, L. R., Huo, Y., Dovidio, J. F., Jiménez, T. R., Schildkraut, D., & Klein, O. (in press). Integration policies shape ethno-racial majorities’ threat reactions to increasing diversity. Science Advances.
  2. Kende, J., Gagliolo, M., Van Laar, C., Tropp, L. R., & Phalet, K. (in press).  Through the eyes of my peers: Sharing perceptions of unequal treatment in ethno-racially diverse classrooms. Cultural Diversity and Ethnic Minority Psychology.
  3. Pérez, E., Goldman, S., Huo, Y., Nteta, T., & Tropp, L. R. (in press). Are solidarity and identification as people of color distinct? Validating new measures across Asian, Black, Latino, and Multiracial Americans. Political Science Research and Methods.
  4. Doyle, L., Easterbrook, M. J., & Tropp, L. R. (2024). Who you know influences where you go: Intergroup contact attenuates bias in trainee teachers’ school preferences. British Journal of Social Psychology, 63, 1497-1514.
  5. Godsil, R. D., Tropp, L. R., & Forde-Mazrui, K. (2024). For all of our children: Justice Thurgood Marshall’s faith in integration is still right. Poverty & Race, 33, 1-17.
  6. Árnadóttir, K., Baysu, G., Van Laar, C., Phalet, K., Tropp, L. R., Sebben, S., Ullrich, J., & Hässler, T. (2024).  How positive and negative intergroup contact jointly inform minority support for social change: The role of system-fairness beliefs. British Journal of Social Psychology, 63, 811-838.
  7. Morhayim, L., Tropp, L. R., & Maloku, E. (2024). Examining beliefs about reconciliation and social integration in Kosovo: Testing effects of interethnic contact and differences in perspective among ethnic Albanians and Serbs. European Journal of Social Psychology, 54(1), 48–65.
  8. Schreiber, J. A., Tropp, L. R., & Uluğ, Ö. M. (2024). Comparing the roles of positive and supportive intergroup contact on social cohesion and social change: Theoretical extensions and practical implications. Translational Issues in Psychological Science, 10(1), 21–34.
  9. Rucinski, C., Mandalaywala, T., & Tropp, L. R. (2024). Escalation effects in teacher perceptions of classroom behavior: The intersecting roles of student race, gender, and behavior severity.  Social Psychology of Education, 27, 813–832.
  10. Marrow, H. B., Okamoto, D. G., García, M., Adem, M., & Tropp, L. R. (2022). Skin tone and Mexicans’ perceptions of discrimination in new immigrant destinations. Social Psychology Quarterly, 85, 374-385.
  11. Tropp, L. R. & Rucinski, C. (2022). How implicit racial bias and concern about appearing racist predict K-12 teachers’ race talk with students. Social Psychology of Education, 25, 697-717.
  12. Burrows, B., Tropp, L. R., Dehrone, T., & Cehajic-Clancy, S. (2022). How intergroup contact shapes intergroup attitudes and construals of relations between ethnic groups: Evidence from Bosnia and Herzegovina. Peace and Conflict: Journal of Peace Psychology, 28, 372-383.
  13. Dehrone, T., Tropp, L. R., Burrows, B., & Bilali, R. (2022). Coming together after genocide: How openness to communication about conflict shapes prospects for social integration in post-genocide Rwanda. Peace and Conflict: Journal of Peace Psychology, 28, 384-396.
  14. Knowles, E. D., Tropp, L. R., & Mogami, M. (2022). Whites construing “non-Whites” as a group: Growing beliefs in minority collusion and White identity politics in the United States. Group Processes & Intergroup Relations, 25, 768-790.
  15. Hässler, T., Ullrich, J., Sebben, S., Shnabel, N., Bernardino, M., Valdenegro, D., Van Laar, C., González, R., Visintin, E., Tropp, L. R., Ditlmann, R., Abrams, D., et al. (2022). Needs satisfaction in intergroup contact: A multi-national study of pathways toward social change. Journal of Personality and Social Psychology, 122, 634-658.
  16. Uluğ, Ö. M., Chayinska, M., & Tropp, L. R. (2022). Conceptual, methodological and contextual challenges in studying collective action: Recommendations for future research. Testing, Psychometrics, Methodology in Applied Psychology, 29, 9-22.
  17. Ünver, H., Güler, M., Cakal, H., & Tropp, L. R. (2022). Support for rights of Syrian refugees in Turkey: The role of secondary transfer effects in intergroup contact. Journal of Community and Applied Social Psychology, 32, 153-171.
  18. Tropp, L. R., White, F., Rucinski, C. L., & Tredoux, C. (2022). Intergroup contact and prejudice reduction: Prospects and challenges in changing youth attitudes. Review of General Psychology, 26(3), 342-360.
  19. Árnadóttir, K., Kende, J., Phalet, K., & Tropp, L. R. (2022). The interplay of positive and negative intergroup contact: Experiences of Latino/a youth in the U.S.. International Journal of Intercultural Relations, 86, 190-202.
  20. Borinca, I., Tropp, L.R., & Ofosu, N. (2021). Meta-humanization enhances positive reactions to prosocial cross-group interaction. British Journal of Social Psychology, 60, 1051-1074.
  21. Paolini, S., White, F. A., Tropp, L. R., Turner, R. N., Page-Gould, E., Barlow, F. K., & Gómez, A. (2021). Intergroup contact research in the 21st century: Lessons learned and forward progress if we remain open. Journal of Social Issues, 77, 11-37.
  22. Tropp, L. R. (2021). Crossing to safety: Attachment processes in intergroup contact. Journal of Social Issues, 77, 86-104.
  23. Uluğ, Ö. M., & Tropp, L. R. (2021). How witnessing racialized incidents shapes willingness to stand up for racial justice: Enhancing awareness of inequality among members of advantaged racial groups. Journal of Applied Social Psychology, 51, 248-261.
  24. Tropp, L. R., Uluğ, Ö. M., & Uysal, M. S. (2021). How intergroup contact and communication about group differences predict collective action intentions among advantaged groups. International Journal of Intercultural Relations, 80, 7-16.
  25. Schalet, A. T., Tropp, L. R., & Troy, L. M. (2020). Making research usable beyond academic circles: A relational model of public engagement. Analyses of Social Issues and Public Policy, 20, 336-356.
  26. Bruneau, E., Szekeres, H., Kteily, N., Tropp, L. R., & Kende, A. (2020). Beyond dislike: Dehumanization (not prejudice) predicts teacher discrimination against minority students. Group Processes and Intergroup Relations, 23(4), 560-577.
  27. Okamoto, D. G., Tropp, L. R., Marrow, H. B., & Jones-Correa, M. (2020). Feeling welcomed: A pathway toward immigrants’ social integration and participation in civic life. Annals of the American Academy of Political and Social Science, 690(1), 61-81.
  28. Jaremka, L. M., Ackerman, J. M., Gawronski, B., Rule, N. O., Sweeny, K., Tropp, L. R., Metz, M. A., Molina, L., Ryan, W.S., & Vick, S.B. (2020). Common academic experiences no one talks about: Repeated rejection, impostor syndrome, and burnout. Perspectives on Psychological Science, 15(3), 519-543.
  29. Hassler, T., Ullrich, J., Bernardino, M., Shnabel, N., Van Laar, C., Valdenegro, D., Sebben, S., Tropp, L. R., Visintin, E. P., Gonzalez, R., Ditlmann, R., Abrams, D., et al. (2020). A large-scale test of the link between intergroup contact and support for social change. Nature Human Behavior.
  30. Stathi, S., Vezzali, L., Di Bernardo, G., Pendleton, S., & Tropp, L. R. (2020). Do they want contact with us? The role of intergroup contact meta-perceptions on positive contact and attitudes. Journal of Community and Applied Social Psychology.
  31. Tropp, L. R. (2019). Adaptation to diversity: Individual and societal processes. Invited commentary, Proceedings of the National Academy of Sciences, 116 (25), 12131-12133.
  32. Tropp, L. R., & Uluğ, O. M. (2019). Are white women showing up for racial justice? Intergroup contact, closeness to people targeted by prejudice, and collective action. Psychology of Women Quarterly, 43, 335-347.
  33. Marrow, H., Tropp, L. R., van der Linden, M., Okamoto, D., & Jones-Correa, M. (2019). How does inter-racial contact among the U.S.-born shape White and Black receptivity toward immigrants? Du Bois Review, pp. 385-416.
  34. Grutter, J., & Tropp, L. R. (2019). How friendship is defined matters for predicting intergroup attitudes: Shared activities and mutual trust with cross-ethnic peers during late childhood and early adolescence. International Journal of Behavioral Development, 43, 128-135.
  35. Hassler, T., Gonzalez, R., Lay, S., Lickel, B., Zagefka, H., Brown, R., Tropp, L. R., Manzi, J., & Bernardino, M. (2019). With a little help from our friends: The impact of cross-group friendship on acculturation preferences. European Journal of Social Psychology, 49, 366-384.
  36. Kotzur, P. F., Tropp, L. R., & Wagner, U. (2018). Welcoming the unwelcome: How contact shapes contexts of reception for new immigrants in Germany and the United States. Journal of Social Issues, 74, 812-832.
  37. Tropp, L. R., & Barlow, F. K. (2018). Making advantaged racial groups care about racial inequality: Intergroup contact as a route to psychological investment. Current Directions in Psychological Science, 27, 194-199.
  38. Jones-Correa, M., Marrow, H., Okamoto, D., & Tropp, L. R. (2018). Immigrant perceptions of U.S.-born receptivity and the shaping of American identity. Russell Sage Foundation Journal of the Social Sciences, 4, 47-80.
  39. Tropp, L. R., Okamoto, D. G., Marrow, H. B., & Jones-Correa, M. (2018). How contact experiences shape welcoming: Perspectives from U.S.-born and immigrant groups. Social Psychology Quarterly, 81, 23-47.
  40. Knowles, E. & Tropp, L. R. (2018). The racial and economic context of Trump support: Evidence for threat, identity, and contact effects in the 2016 Presidential Election. Social Psychological and Personality Science, 9, 275-284.
  41. Gómez, A., Tropp, L. R., Vazquez, A., Voci, A., & Hewstone, M. (2018). Depersonalized extended contact and injunctive norms about cross-group friendship impact intergroup orientations. Journal of Experimental Social Psychology, 76, 356-370.
  42. Hayward, L. E., Tropp, L. R., Hornsey, M. J., & Barlow, F. K. (2018). Negative (but not positive) contact with Whites directly predicts collective action among racial and ethnic minorities. British Journal of Social Psychology, 57, 1-20.
  43. Orosz, G., Bruneau, E., Tropp, L. R., Sebestyen, N., Toth-Kiraly, I., & Bothe, B. (2018). What predicts anti-Roma prejudice? Qualitative and quantitative analysis of everyday sentiments about the Roma. Journal of Applied Social Psychology, 48, 317-328.
  44. Selvanathan, H., Techakesari, P., Tropp, L. R., & Barlow, F. K. (2018). Whites for racial justice: How contact with Blacks predicts Whites’ collective action. Group Processes and Intergroup Relations, 21, 893-912.
  45. O’Brien, T. C., Leidner, B., & Tropp, L. R. (2018). Are they for us or against us? How intergroup metaperceptions shape foreign policy attitudes. Group Processes and Intergroup Relations, 21, 941-961.
  46. Hayward, L. E., Hornsey, M. J., Tropp, L. R., & Barlow, F. K. (2017). Positive and negative intergroup contact predict White and Black Americans’ judgments about police violence against Black Americans. Journal of Applied Social Psychology, 47, 605-615.
  47. Hayward, L., Tropp, L. R., Hornsey, M., & Barlow, F. (2017). Toward a comprehensive understanding of intergroup contact: Descriptions and mediators of positive and negative contact among majority and minority groups. Personality and Social Psychology Bulletin, 43, 347-364.
  48. Tropp, L. R., Hawi, D., O’Brien, T. C., Gheorghiu, M., Zetes, A., & Butz, D. (2017). Intergroup contact and the potential for post-conflict reconciliation: Studies in South Africa and Northern Ireland. Peace and Conflict: Journal of Peace Psychology, 23, 239-249.
  49. Kende, A., Tropp, L. R., & Lantos, N. (2017). Testing a contact intervention based on intergroup friendship between Roma and non‐Roma Hungarians: Reducing bias through institutional support in a non‐supportive societal context. Journal of Applied Social Psychology, 47, 47-55.
  50. Wright, S. C., Tropp, L. R., & Mazziotta, A. (2017). Contact between groups, peace, and conflict. Peace and Conflict: Journal of Peace Psychology, 23, 207-209.
  51. Wright, S. C., Mazziotta, A., & Tropp, L. R. (2017). Contact and intergroup conflict: New ideas for the road ahead. Peace and Conflict: Journal of Peace Psychology, 23, 317-327.
  52. Gonzalez, R., Lickel, B., Gupta, M., Tropp, L. R., Luengo, B. P., Mora, E., de Tezanos Pinto, P., Berger, C., Valdenegro, D., Cayul, O., Miranda, D., Saavedra, P., & Bernardino, M. (2017). Ethnic identity development and acculturation preferences among minority and majority youth. Child Development, 88, 743-760.
  53. Tropp, L. R., O’Brien, T. C., Gonzalez, R., Valdenegro, D., Migacheva, K., de Tezanos Pinto, P., Berger, C., & Cayul, O. (2016). Predicting interethnic experiences among ethnic minority and majority youth: The roles of perceived peer norms, school norms, and discrimination. Child Development, 87, 1436-1451.
  54. Orosz, G., Banki, E., Bothel, B., Toth-Kiraly, & Tropp, L. R. (2016). Don't judge a living book by its cover: Effectiveness of the Living Library intervention in reducing prejudice toward Roma and LGBT people. Journal of Applied Social Psychology, 46, 510-517.
  55. Vollhardt, J. R., Nair, R., & Tropp, L. R. (2016). Predicting support for refugees and immigrants among minority groups: The role of inclusive victim consciousness. Journal of Applied Social Psychology, 46, 354-368.
  56. Molina, L. E., Tropp, L. R., & Goode, C. (2016). Reflections on intergroup relations. Current Opinion in Psychology, 11, 120-124.
  57. Tropp, L. R., O’Brien, T., & Migacheva, K. (2014). How peer norms of inclusion and exclusion predict children’s interest in cross-ethnic friendships. Journal of Social Issues, 70, 151-166.
  58. Migacheva, K., & Tropp, L. R. (2013). Learning orientation as a predictor of positive intergroup contact. Group Processes and Intergroup Relations, 16, 426-444.
  59. Leidner, B., Tropp, L. R., & Lickel, B. (2013). Bringing science to bear – on peace, not war: Elaborating on psychology’s potential to promote peace. American Psychologist, 68, 514-526.
  60. Tropp, L. R., Hawi, D., Van Laar, C., & Levin, S. (2012). Cross-ethnic friendships, perceived discrimination and their effects on ethnic activism over time: A longitudinal investigation of three ethnic minority groups. British Journal of Social Psychology, 51, 257-272.
  61. Aboud, F., Tredoux, C., Tropp, L. R., Brown, C., Niens, U., & Noor, N. (2012). Interventions to reduce prejudice and enhance inclusion and respect for ethnic differences in early childhood: A systematic review. Developmental Review, 32, 307-336.
  62. Christ, O., Hewstone, M., Tropp, L. R., & Wagner, U. (2012). Dynamic processes in intergroup contact. British Journal of Social Psychology, 51, 219-220.
  63. Cronin, T. J., Levin, S., Branscombe, N., Van Laar, C., & Tropp, L. R. (2012). Ethnic identification in response to perceived discrimination protects well-being and promotes activism: A longitudinal study of Latino college students. Group Processes and Intergroup Relations, 15, 393-407.
  64. Bilali, R., Tropp, L. R., & Dasgupta, N. (2012). Attributions of responsibility and perceived harm in the aftermath of mass violence. Peace and Conflict: Journal of Peace Psychology, 18, 21-38.
  65. Gómez, A., Tropp, L. R., & Fernandez, S. (2011). When extended contact opens the door to future contact: Testing the effects of extended contact on intergroup attitudes and expectancies among minority and majority groups. Group Processes and Intergroup Relations, 14, 161-173.
  66. Davies, K., Tropp, L. R., Aron, A., Pettigrew, T. F., & Wright, S. C. (2011). Cross-group friendships and intergroup attitudes: A meta-analytic review. Personality and Social Psychology Review, 15, 332-351.
  67. Adesokan, A., van Dick, R., Ullrich, J., & Tropp, L. R. (2011). Diversity beliefs as moderator of the contact-prejudice relationship. Social Psychology, 271-278.
  68. Pettigrew, T. F., Tropp, L. R., Wagner, U., & Christ, O. (2011). Recent advances in intergroup contact theory. International Journal of Intercultural Relations, 35, 271-280.
  69. Dixon, J., Tropp, L. R., Durrheim, K., & Tredoux, C. (2010). ‘Let them eat harmony’: Prejudice reduction strategies and attitudes of historically disadvantaged groups. Current Directions in Psychological Science, 19, 76-80.
  70. Dixon, J., Tredoux, C., Durrheim, K., Tropp, L. R., Eaton, L., & Clack, B. (2010). Challenging the stubborn core of opposition to equality: Racial contact and policy attitudes. Political Psychology, 31, 831-855.
  71. Dixon, J., Durrheim, K., Tredoux, C., Tropp, L. R., Clack, B., & Eaton, L. (2010). A paradox of integration? Interracial contact, prejudice reduction, and blacks’ perceptions of racial discrimination. Journal of Social Issues, 66, 401-416.
  72. Page-Gould, E., Mendoza-Denton, R., & Tropp, L. R. (2008). With a little help from my cross-group friend: Reducing anxiety in intergroup contexts through cross-group friendship. Journal of Personality and Social Psychology, 95, 1080-1094.
  73. Pettigrew, T. F., & Tropp, L. R. (2008). How does intergroup contact reduce prejudice? Meta-analytic tests of three mediators. European Journal of Social Psychology, 38, 922-934.
  74. Tropp, L. R., Smith, A. E., & Crosby, F. J. (2007). The use of research in the Seattle and Jefferson County desegregation cases: Connecting social science and the law. Analyses of Social Issues and Public Policy, 7, 93-120.
  75. Tropp, L. R. (2007). Perceived discrimination and interracial contact: Predicting interracial closeness among Black and White Americans. Social Psychology Quarterly, 70, 70-81.
  76. Tropp, L. R., & Bianchi, R. A. (2007). Feelings about intergroup contact depending on who says what to whom. European Journal of Social Psychology, 37, 153-170.
  77. Méndez, E., Gómez, A., & Tropp, L. R. (2007). When metaperceptions are affected by intergroup processes. International Journal of Psychology and Psychological Therapy, 7, 237-250.
  78. Tropp, L. R., & Bianchi, R. A. (2006). Valuing diversity and intergroup contact. Journal of Social Issues, 62, 533-551.
  79. Frey, F. E., & Tropp, L. R. (2006). Being seen as individuals versus as group members: Extending research on metaperception to intergroup contexts. Personality and Social Psychology Review, 10, 265-280.
  80. Pettigrew, T. F., & Tropp, L. R. (2006). A meta-analytic test of intergroup contact theory. Journal of Personality and Social Psychology, 90, 751-783. (note: authors are listed alphabetically and contributed equally)
  81. Nagda, B. A., Tropp, L. R., & Paluck, E. L. (2006). Looking back as we look forward: Integrating research, theory, and practice on intergroup relations. Journal of Social Issues, 62, 439-451.
  82. Tropp, L. R., Stout, A. M., Boatswain, C., Wright, S. C., & Pettigrew, T. F. (2006). Trust and acceptance in response to references to group membership: Minority and majority perspectives on cross-group interactions. Journal of Applied Social Psychology, 36, 769-794.
  83. Tropp, L. R., & Pettigrew, T. F. (2005). Relationships between intergroup contact and prejudice among minority and majority status groups. Psychological Science, 16, 951-957.
  84. Tropp, L. R., & Pettigrew, T. F. (2005). Differential relationships between intergroup contact and affective and cognitive indicators of prejudice. Personality and Social Psychology Bulletin, 31, 1145-1158.
  85. Wright, S. C., & Tropp, L. R. (2005). Language and intergroup contact: Investigating the impact of bilingual instruction on children’s intergroup attitudes. Group Processes and Intergroup Relations, special issue on Language, Communication, and Intergroup Relations, 8, 309-328.
  86. Tropp, L. R., & Brown, A. C. (2004). What benefits the group can also benefit the individual: Group-enhancing and individual-enhancing motives for collective action. Group Processes and Intergroup Relations, 7, 267-282.
  87. Mastro, D., & Tropp, L. R. (2004). The effects of interracial contact, attitudes, and stereotypical portrayals on evaluations of Black television sitcom characters. Communication Research Reports, 21, 119-129.
  88. Tropp, L. R. (2003). The psychological impact of prejudice: Implications for intergroup contact. Group Processes and Intergroup Relations, 6, 131-149.
  89. Tropp, L. R., & Wright, S. C. (2003). Evaluations and perceptions of self, ingroup, and outgroup: Comparisons between Mexican American and European American children. Self and Identity, 2, 203-221.
  90. Tropp, L. R., & Wright, S. C. (2001). Ingroup identification as the inclusion of ingroup in the self. Personality and Social Psychology Bulletin, 27, 585-600.
  91. Tropp, L. R., & Wright, S. C. (1999). Ingroup identification and relative deprivation: An examination across multiple social comparisons. European Journal of Social Psychology, 29, 707-724.
  92. Tropp, L. R., Erkut, S., Alarcón, O., García Coll, C., & Vázquez García, H. (1999). Psychological acculturation: Development of a new measure for Puerto Ricans on the U. S. mainland. Educational and Psychological Measurement, 59 (2), 351-367.
  93. Erkut, S., Alarcón, O., García Coll, C., Tropp, L. R., & Vázquez García, H. (1999). The dual-focus approach to creating bilingual measures. Journal of Cross-Cultural Psychology, 30 (2), 206-216.

Book Chapters

  1. Tropp, L. R., Abellera, C., Schreiber, J. A., Uluğ, Ö. M., & Burrows, B. (in press). Expanding intergroup contact research beyond prejudice reduction: Implications for diversity, inclusion, belonging, and support for equality. To appear in: V. Esses, J. F. Dovidio, D. Sekaquaptewa, K. West, & J. Jetten (Eds.), Sage Handbook of Psychological Perspectives on Diversity, Equity, and Inclusion.
  2. Tropp, L. R., Morhayim, L., & Grigoryan, L. (in press). How social categorization shapes intergroup contact: Implications for understanding group members’ subjective experiences and prospects for achieving attitude generalization. To appear in T. D. Nelson (Ed.), Handbook of Prejudice, Stereotyping, and Discrimination (3rd edition). Routledge.
  3. Godsil, R. D., Forde-Mazrui, K., & Tropp, L. R. (2024). Overcoming identity-based hierarchies: Understanding psychological barriers and motivating social justice through intergroup contact. In R. Hollander-Blumoff (Ed.), Handbook on Research in Law and Psychology (pp. 394-417). Edward Elgar Publishing.
  4. Tropp, L. R., & Dehrone, T. A. (2023). Prejudice reduction and social change: Dual goals to be pursued in tandem. In L. Huddy, D. Sears, J. Levy, & J. Jerit (Eds.). Oxford Handbook of Political Psychology (3rd edition, pp. 1062-1094). Oxford University Press.
  5. Dehrone, T., Burrows, B., Tropp, L. R., Bilali, R., & Morrisson, G. (2022). Twubakane: Contact-based programs to strengthen social cohesion in post-genocide Rwanda. In A. Nordstrom & W. Goodfriend (Eds.), Innovative Stigma and Discrimination Reduction Programs (pp. 87-100). Taylor & Francis.
  6. Maddox, K. B., Crittle, C. S., Sommers, S. R., & Tropp, L. R. (2020). Confronting conflicting attitudes about racial bias in the United States: How communicator identities shape audience reception. In Y. G. Acar, S. M. Moss, & O. M. Uluğ (Eds.), Researching peace, conflict, and power in the field: Methodological challenges and opportunities (pp. 85-102). Springer.
  7. Tropp, L. R., & Molina, L. (2019). Intergroup processes: From prejudice to positive relations between groups. In K. Deaux & M. Snyder (Eds.), Oxford handbook of personality and social psychology, 2nd edition (pp. 621-643). Oxford University Press.
  8. Tropp, L. R., & Al Ramiah, A. (2017). Contact strategies for improving intergroup relations among youth. In A. Rutland, D. Nesdale, & C. S. Brown (Eds.), Wiley-Blackwell Handbook of Group Processes in Children and Adolescents (pp. 353-372). Wiley and Sons.
  9. O’Brien, T. C., & Tropp, L. R. (2017). Intergroup contact theory. In F. Moghaddam (Ed.), Sage Encyclopedia of Political Behavior. Sage.
  10. Tropp, L. R., Mazziotta, A., & Wright, S. C. (2017). Recent developments in intergroup contact research: Affective processes, group status, and contact valence. In C. Sibley and F. K. Barlow (Eds.), Cambridge Handbook of the Psychology of Prejudice (pp. 463-480). Cambridge University Press.
  11. Tropp, L. R. (2015). Dismantling the ethos of conflict: Strategies for improving intergroup relations. In E. Halperin & K. Sharvit (Eds.), The social psychology of intractable conflicts (pp. 159-171). Springer.
  12. O’Brien, T. C., & Tropp, L. R. (2015). Psychology: The phenomenology of human security: In P. Bourbeau (Ed.), Security: Dialogue across disciplines (pp. 137-155) Cambridge University Press.
  13. Leidner, B, Tropp, L, & Lickel, B. (2015). Political psychology of groups. To appear in O. Feldman & S. Zmerli (Eds.), Politische Psychologie: Handbuch für Studium und Wissenschaft (Political Psychology: Handbook for Study and Science, pp. 236-252). Nomos Verlagsgesellschaft.
  14. Tropp, L. R. (2015). Intergroup contact. In J. Bennett (Ed.), Sage Encyclopedia of Intercultural Competence (pp. 536-539). Sage.
  15. Tropp, L. R., & Page-Gould, E. (2014). Contact between groups. In M. Mikulincer, P. R. Shaver, J. F. Dovidio & J. A.Simpson (Eds.), APA handbook of personality and social psychology, Volume 2: Group Processes (pp. 535-560). American Psychological Association.
  16. Adams, M., Perry-Jenkins, M., & Tropp, L. R. (2014). Pedagogical tools for social justice and psychology. In C. Johnson, H. Friedman, J. Diaz, Z. Franco, & B. Nastasi (Eds.), Praeger handbook on social justice and psychology (pp. 227-247). Praeger.
  17. Saguy, T., Tropp, L. R., & Hawi, D. (2012). The role of group power in intergroup contact. In G. Hodson & M. Hewstone (Eds.), Advances in intergroup contact (pp. 113-131). Psychology Press.
  18. Tropp, L. R. (2012). Understanding and responding to intergroup conflict: Toward an integrated analysis. In L. R. Tropp (Ed.), Oxford handbook of intergroup conflict (pp. 3-10). Oxford University Press.
  19. Tropp, L. R., & Molina, L. (2012). Intergroup processes: From prejudice to positive relations between groups. In K. Deaux & M. Snyder (Eds.), Oxford handbook of personality and social psychology (pp. 545-570). Oxford University Press.
  20. Tropp, L. R. (2012). Intergroup contact theory. In D. Christie (Ed.), Encyclopedia of peace psychology (pp. 254-259). Wiley-Blackwell.
  21. Tropp, L. R., & Mallett, R. K. (2011). Charting new pathways to positive intergroup relations. In L. R. Tropp & R. K. Mallett (Eds.), Moving beyond prejudice reduction: Pathways to positive intergroup relations (pp. 3-17). American Psychological Association.
  22. Migacheva, K., Tropp, L. R., & Crocker, J. (2011). Focusing beyond the self: Goal orientations in intergroup relations. In L. R. Tropp & R. Mallett (Eds.), Moving beyond prejudice reduction: Pathways to positive intergroup relations (pp. 99-115). American Psychological Association.
  23. Tropp, L. R., & Pettigrew, T. F. (2009). Intergroup contact theory: Summarizing results from a meta-analytic review. In G. L. Carter (Ed.), Empirical approaches to sociology, 5th edition. Allyn & Bacon.
  24. Tropp, L. R., & Kim, J. (2009). Ethnicity. In J. Levine & M. Hogg (Eds.), Sage Encyclopedia of Group Processes and Intergroup Relations.
  25. Vollhardt, J., Migacheva, K., & Tropp, L. R. (2009). Social cohesion and tolerance for group differences. In J. De Rivera (Ed.), Handbook on building cultures of peace (pp. 139-152). Springer.
  26. Tropp, L. R. (2008). The role of trust in intergroup contact: Its significance and implications for improving relations between groups. In U. Wagner, L. R. Tropp, G. Finchilescu, & C. Tredoux (Eds.), Improving intergroup relations: Building on the legacy of Thomas F. Pettigrew (pp. 91-106). Blackwell.
  27. Tropp, L. R. & Prenovost, M. (2008). The role of intergroup contact in predicting interethnic attitudes: Evidence from meta-analytic and field studies. In S. Levy and M. Killen (Eds.), Intergroup attitudes and relations in childhood through adulthood (pp. 236-248). Oxford University Press.
  28. Tropp, L. R. (2007). Intergroup relations. In R. Baumeister and K. Vohs (Eds.), Encyclopedia of Social Psychology (pp. 494-495). Sage.
  29. Pittinsky, T. L., Montoya, R. M., Tropp, L. R., & Chen, A. (2007). How and when leader behavior affects intergroup liking: Affect, approval, and allophilia. In C. Anderson, B. Mannix, & M. Neale (Eds.), Affect and Groups: Research on Managing Groups and Teams, Vol. 10 (pp. 125-144). Elsevier.
  30. Tropp, L. R. (2006). Stigma and intergroup contact among members of minority and majority status groups. In S. Levin & C. Van Laar (Eds.), Stigma and group inequality: Social psychological perspectives (pp. 171-191). Erlbaum.
  31. Pettigrew, T. F., & Tropp, L. R. (2005). Allport’s intergroup contact hypothesis: Its history and influence. In J. F. Dovidio, P. Glick, and L. Rudman (Eds.), On The Nature of Prejudice: Fifty years after Allport (pp. 262-277). Blackwell.
  32. Tropp, L. R., & Pettigrew, T. F. (2004). Intergroup contact and the central role of affect in intergroup prejudice. In C. W. Leach & L. Tiedens (Eds.), The social life of emotion (pp. 246-269). Cambridge University Press.
  33. Wright, S. C., & Tropp, L. R. (2002). Collective action in response to disadvantage: Intergroup perceptions, social identification, and social change. In I. Walker & H. Smith (Eds.), Relative deprivation: Specification, development, and integration (pp. 200-236). Cambridge University Press.
  34. Wright, S. C., Aron, A., & Tropp, L. R. (2002). Including others (and their groups) in the self: Self-expansion theory and intergroup relations. In J. P. Forgas & K. D. Williams (Eds.), The social self: Cognitive, interpersonal, and intergroup perspectives (pp. 343-363). Psychology Press.
  35. Pettigrew, T. F., & Tropp, L. R. (2000). Does intergroup contact reduce prejudice? Recent meta-analytic findings. In S. Oskamp (Ed.), Reducing prejudice and discrimination: The Claremont Symposium on Applied Social Psychology (pp. 93-114). Erlbaum.
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