University of Massachusetts Amherst

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Selected Publications from Program Faculty, Students and Graduates

To find a publication author from our program click on their name below:

FACULTY: Bernhard Leidner, Brian Lickel, Ervin Staub, Linda Tropp, Stellan Vinthagen

CURRENT STUDENTS: Thomas O'BrienRachel Steele  

PAST STUDENTS: Rezarta BilaliManisha GuptaDiala Hawi, Jaeshin Kim, Katya Migacheva, Ramila Usoff-Thowfeek, Johanna Ray Vollhardt, Amelie Werther



Carnes, N., Lickel, B., & Janoff-Bulman, R. (2015).  Shared perceptions:  Morality is embedded in social contexts. Personality and Social Psychology Bulletin, 41, 351-362.

Migacheva, K. (2015). Searching for puzzle pieces: How (social) psychology can help inform human rights policy. Peace and Conflict: Journal of Peace Psychology 21(1) 142-149.

Schmader, T., Block, K., & Lickel, B. (2015). Social identity threat in response to stereotypic film portrayals:  Effects on self-conscious emotion and implicit ingroup attitudes. Journal of Social Issues, 71, 54-72.

Steele, R. R., Lickel, B., & Parker, M. T. (2015). Bias within because of threat from outside: The effects of an external call for terrorism on anti-Muslim attitudes in the United States. Social Psychological and Personality Science, 6(2), 193-200.

Vinthagen, S. & Johansson, A. (2015 ) Dimensions of Everyday Resistance: The Case of Palestinian Sumûd. Journal of Political Power, published online on Feb 20.

Vinthagen, S.,  Smedjeback, M., Spalde, A., Sternfeldt, A. & Strindlund , P. (ed.) (2015).  Inburad – Svenska fredsaktivister skriver från fängelse (Locked In – Swedish Peace Activists Writes From Prison). (pp. 37-77) Nössemark, Sweden: Irene Publishing.


Bilali, R. (2014). Between fiction and reality in post-genocide Rwanda: Reflections on a social-psychological media intervention for social change. Journal of Social and Political Psychology 2(1).

Bilali, R. (2014). The downsides of a shared national identification for minority group outcomes in intergroup conflicts in assimilationist societies. British Journal of Social Psychology, 53, 21-38.

Campbell, M. & Vollhardt, J.R. (2014). Fighting the good fight: The relationship between belief in evil and support for violent policies. Personality and Social Psychology Bulletin, 40,

Lickel, B., Kushlev, K., Savalei, V. Matta, S., & Schmader, T. (2014). Shame and the motivation to change the self. Emotion, 14, 1049-1061.

Steele, R. R., & Blatz, C. W. (2014). Faith in the just behavior of others: Intergroup apologies and apology elaboration. Journal of Social and Political Psychology, 2(1), 268-288

Tropp, L.R., O’Brien, T.C., & Migacheva, K. (2014). How peer norms of inclusion and exclusion predict children’s interest in cross-ethnic friendship. Journal of Social Issues, 70(1), 151-166.

Vinthagen, S., Johansson, A. (2014) Dimensions of Everyday Resistance: An Analytical Framework. Critical Sociology, published online on May 12.

Vinthagen, S., Lilja, M. (2014) Sovereign Power, Disciplinary Power and Biopower: Resisting What Power With What Resistance?  Journal of Political Power, 7:1, 107-126.

Vollhardt, J.R., Mazur, L.B., & Lemahieu, M. (2014). Acknowledgment after mass violence:Effects on psychological well-being and intergroup relations. Group Processes and
Intergroup Relations,
17, 306 - 323.


Bilali, R. (2013). National narrative and social psychological influences in Turks’ denial of the mass killings of Armenians as genocide. Journal of Social Issues, 69, 16-33.

Bilali, R., & Vollhardt, J. R. (2013). Priming effects of a reconciliation radio drama on historical perspective-taking in the aftermath of mass violence in Rwanda. Journal of Experimental Social Psychology, 49, 144-151.

Ka, S., An, S., Kim, G., & Kim, J. (2013). Political economy of public disputes caused by NIMBY and PIMFY facilities. The 21st Century Political Science Review, 23(2), 193-210.

Kim, J., & Lim, J. (2013). The ideological conflict between conservatives and progressives in university students’ voting for the 19th general election. The Journal of Political Science & Communication, 16(2), 61-87.

Kim, J. (2013). The characteristics and trends of environmental conflicts in South Korea: 1990-2011. Korean Policy Studies Review, 22(2), 259-281.

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(7), 514-526.

Leidner, B., Castano, E., & Ginges, J. (2013). Dehumanization, retributive and restorative justice, and aggressive versus diplomatic intergroup conflict resolution strategies. Personality and Social Psychology Bulletin, 39(1), 82-91.

Lickel, B & Gupta, M.  (2013). Intergroup Conflict. Oxford Bibliographies Online in Psychology.

Migacheva, K., & Tropp, L. R. (2013). Learning orientation as a predictor of positive intergroup contact.Group Processes and Intergroup Relations,16, 426-444

Staub, E. (2013). A World without Genocide: Prevention, Reconciliation and the Creation of Peaceful Societies. In Vollhardt, J. & Bilewicz, M. (eds). The Aftermath of Genocide: Psychological Perspectives. Journal of Social Issues. 180-199.

Staub, E. (2013). Understanding the Origins of Mass Violence, Prevention, and Reconciliation:Workshops/Trainings and Educational Radio Programs Promoting Healing And Reconciliation in Rwanda (and Burundi and the Congo). International Psychology Bulletin, 17 (2).52-56.

Staub, E. (2013). Building a peaceful society: Origins, prevention, and reconciliation after genocide and other group violence. American Psychologist, 68(7), 576-589.

Vasquez, E. A., Lickel, B., & Hennigan, K. (2013). Applying socio-psychological models to understanding displaced and group-based aggression in street gangs.  In J.L. Wood & T. A. Gannon (Eds.) Group influence: Criminal activity and crime reduction, (pp. 56-74). New York: Routledge and Psychology Press.

Vinthagen, S., & Johansson, A. (2013). Everyday Resistance: Exploration of a Concept & its Theories. , Resistance Studies Magazine, Issue 1, 1-46.

Vinthagen, S., & Gustafsson, H. (2013). Law on the Move - Reflections on Legal Change and Social Movements. Retfærd: Nordisk Juridisk Tidskrift, 36,  23-59.

Vinthagen, S., Baaz, M., & Lilja, M. (2013). Exploring Irrational Resistance.  Journal of Political Power. 6,(2), 201-217. 

Vinthagen, S. (2013). Ten Theses on Why We Need a Social Science Panel on Climate Change. ACME 12(1),155-176.

Vinthagen, S. (2013). Legal Mobilization and Resistance Movements as Social Constituents of International Law. Finnish Yearbook of International Law, 21 (2010), 287-327.

Vollhardt, J.R. & Bilewicz, M. (Eds.). (2013). The aftermath of genocide: psychological perspectives. Journal of Social Issues, 69 (1).

Vollhardt, J.R., & Cohrs, J.C. (2013). Aktuelle Sozialpsychologische Beitrӓge zur Friedens- und Konfliktforschung [Current social psychological contributions to Peace and Conflict
Studies]. Zeitschrift für Friedens- und Konfliktforschung [Journal of Peace and Conflict Studies], 2, 246-277.

Vollhardt, J.R. (2013). “Crime against humanity” or “Crime against Jews”? Acknowledgment in construals of the Holocaust and its importance for intergroup relations. Journal of Social
Issues, 69,

Vollhardt, J.R. & Bilewicz, M. (2013). After the genocide: psychological perspectives on victim, bystander, and perpetrator groups. Journal of Social Issues, 69, 1-15.


Bilali, R. (2012). Identity centrality and ingroup superiority differentially predict reactions to historical victimization and harm doing. International Journal of Conflict and Violence, 6, 322-388.

Bilali, R., Tropp, L. R., & Dasgupta, N. (2012). Attributions of responsibility  and perceived harm in the aftermath of mass violence. Peace & Conflict: Journal of Peace Psychology, 18, 21-39.

Bilali, R., & Ross, M. (2012).  Remembering intergroup  conflict. In Tropp, L. R. (Ed.), Oxford Handbook of Intergroup Conflict (pp. 123-135). New York: Oxford University Press.

Bilali, R. (2012).  Collective memories of intergroup conflict. In D. Christie (Ed.),  Encyclopedia of Peace Psychology (pp. 147-151). Malden, MA: Wiley-Blackwell.

Bilali, R. (2012). Image theory. In D. Christie (Ed.), Encyclopedia of Peace Psychology (pp. 544-548). Malden, MA: Wiley-Blackwell.

Bilewicz, M., & Vollhardt, J. R. (2012). Evil transformations: Psychological processes underlying genocide and mass killing. In A. Golec De Zavala & A. Cichocka (Eds.), Social psychology of social problems. The intergroup context (pp. 280 - 307).  New York: Palgrave Macmillan.  

Braun, E., Woodley, A., Richardson, J. T., &  Leidner, B. (2012). Self-rated competences questionnaires from a design perspective. Educational Research Review, 7(1), 1-18.

Christ, O., Hewstone, M., Tropp, L. R., & Wagner, U. (Eds.) (2012). Special Section, Dynamic processes in intergroup contact. British Journal of Social Psychology, 51 (2), 219-220.

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.

Groeben, N. & Vollhardt, J.R. (2012). Friedenspsychologie als zielorientierte Praxisforschung. Eine metatheoretisch-methodologische Kritik. [Peace psychology as goal-oriented, practice-focused research. A meta-theoretical methodological critique.] In W. Baros & J. Rost (Eds.), Natur- und kulturwissenschaftliche Perspektiven in der Psychologie. Methodologie - Methoden - Anwendungsbeispiele [Natural and cultural science perspectives in psychology. Methodology - methods - application examples] (pp. 17-27). Berlin, Germany: Verlag.

Jeon, H., & Kim, J. (2012). Effects of message sidedness on credibility of the message and attitude toward the conflict issue: An experiment on the PR message of the Korean Government. Journal of Public Relations Research, 16(2), 5-31.

Lee, S., Moon, J., Chang, E., Park, H., Kim, G., & Kim, J. (2012). Determinants of public conflict resolution in regional development projects. The Korea Spatial Planning Review, 74, 195-220

Leidner, B., Sheikh, H., & Ginges, J. (2012). Affective dimensions of intergroup humiliation. PLosOne, 7(9), 1-6.

Leidner, B., & Castano, E. (2012).  Morality shifting in the context of intergroup violence. European Journal of Social Psychology, 42(1), 82-91.

Lickel, B. (2012). Retribution and revenge. In L. R. Tropp (Ed.) Oxford Handbook of Intergroup Conflict (pp. 89-105). New York: Oxford University Press.

Lickel, B. (2012). Emotion. In D. J. Christie (Ed.), Encyclopedia of Peace Psychology (pp. 378-381) Hoboken, NJ: Wiley.

Saguy, T., Tropp, L.R.., & Hawi, D. R. (2012). The role of group power in intergroup contact. In G. Hodson & M. Hewstone (Eds).  Advances in Intergroup Contact (pp. 113-131). New York: Psychology Press

Schmader, T., Croft, A., Scarner, M., Lickel, B., & Mendes, W. B., (2012) Implicit and explicit emotional reactions to witnessing prejudice., Group Processes and Intergroup Relations, 15, 379-392

Staub, E. (2012). Psychology and morality in genocide and violent conflict: perpetrators, passive bystanders and rescuers. In M. Mikulincer & P. Shaver (Eds), The Social Psychology of Morality (pp. 381-398). Washington, DC: American Psychological Association Press.

Staub, E. (2012). Genocide and mass killing: Origins and prevention. In  Christie, D. (Ed.), Encyclopedia of Peace Psychology (pp. 481- 486). Malden, MA: Wiley-Blackwell.

Staub, E. (2012). Uncertainty and the roots and prevention of genocide and terrorism. In M. A. Hogg and D. Blaylock, D. (Eds.), Extremism and the Psychology of Uncertainty (pp. 263-280). Oxford: Blackwell.
Staub, E (2012). The roots and prevention of genocide and related mass violence. In M. Anstey, P.  Meerts, & I. W. Zartman (Eds.), The slippery slope to genocide: Reducing identity conflicts and preventing mass murder (pp. 35-54). New York: Oxford University Press.

Staub, E. (2012).  Bystandership - One can make a difference: Interview with Ervin Staub.  In N. R. Goodman & M. B. Meyers (Eds.),. The power of witnessing: Reflections, reverberations, and traces of the holocaust  (pp. 333-348). New York: Routledge.

Staub, E. (2012). Genocide, mass killing, and violent conflict: prevention and reconciliation. In Tropp, L. R. (Ed.), Oxford Handbook of Intergroup Conflict (pp. 273-290). New York: Oxford University Press.

Staub, E. (2012). The challenging road to reconciliation in Rwanda. E-International Relations. Retrieved from

Staub, E. (2012). The origins and inhibiting influences in genocide, mass killing, and other collective violence. In M. Breen-Smyth (Ed.), The Ashgate Research Companion on Political Violence (pp. 205-224). Aldershot: Ashgate.

Staub, E. (2012). Reconciliation between groups, the prevention of violence, and lasting peace.  In P. Coleman & M. Deutsch (Eds.), The Psychological Components of a Sustainable Peace (pp. 245-263). New York: Springer Science and Business Media.

Tropp, L. R. (Ed.) (2012). Oxford Handbook of Intergroup Conflict.  New York: Oxford University Press.

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.

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). New York: Oxford University Press.

Tropp, L. R. (2012). Intergroup contact theory. In D. Christie (Ed.), Encyclopedia of Peace Psychology (pp. 254-259). Hoboken, NJ: Wiley-Blackwell.

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). New York: Oxford University Press.

Usoof-Thowfeek, R. (2012).  Putting back the pieces to together: The psychological wellbeing of returned communities in Vavuniya and Mannar.  In T. de Silva and D. Herath (Eds.), Healing the wounds? Rebuilding Sri Lanka after the war (pp. 96 -129). International Center for Ethnic Studies.

Usoof-Thowfeek, R. (Ed.) (2012). Knowledge Society or knowledge for society. University of Peradeniya.

Vasquez, E. A., Lickel, B., & Hennigan, K. (2012). Applying socio-psychological models to understanding displaced and group-based aggression in street gangs.  In J. L. Wood & T. A. Gannon (Eds.), Crime and crime reduction: The importance of group processes (pp. 56-74).  Hove, East Sussex and New York: Routledge.

Vinthagen, S., Kenrick, J. &  Mason. K. (Eds.) (2012). Tackling Trident: Academics in Action through Academic Conference Blockades. Nössemark, Sweden: Irene Publishing.

Vollhardt, J.R. (2012). Interpreting rights and duties after mass violence. Culture and Psychology, 18, 133-145.     

Vollhardt, J. R. (2012). Collective victimization. In L. R. Tropp (Ed.), Oxford Handbook of Intergroup Conflict (pp. 136-157). New York: Oxford University Press.

Vollhardt, J. R. (2012). Collective victimhood. In D. J. Christie (Ed.), Encyclopedia of Peace Psychology (pp. 1164-1167). Malden, MA: Wiley-Blackwell.

Vollhardt, J. R. (2012). Social  psychological  peace research. In D. J. Christie (Ed.), Encyclopedia of Peace Psychology (pp. 1037-1041). Malden, MA: Wiley-Blackwell.

Vollhardt, J. R. (2012). Tolerance for diverse groups. In D. J. Christie (Ed.), Encyclopedia of Peace Psychology (pp. 1117-1121). Malden, MA: Wiley-Blackwell.



Adesokan, A., van Dick, R., Ullrich, J., & Tropp, L. R. (2011). Diversity beliefs as moderator of the contact-prejudice relationship. Social Psychology, 271-278.

Castano, E., Leidner, B., Bonacossa, A., Nikkah, J., Perrulli, R., Spencer, B., & Humphrey, N. (2011). Ideology, fear of death, and death anxiety. Political Psychology, 32(4), 601-621.

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.

Giner-Sorolla, R., Leidner, B., & Castano, E. (2011). Dehumanization, demonization, and morality shifting: Paths to moral certainty in extremist violence. In M. A. Hogg & D. L. Blaylock (Eds.), Extremism and the Psychology of Uncertainty (pp. 165-182). Boston, MA: Wiley-Blackwell.

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.

Kim, J., & Kim, G. (2011). Public conflict and trust in civil society: Relationship between perceived conflict and trust in government. Korean Local Administration Review, 8(1), 135-148.

Kim, J. (2011). The effects of trust in generalized others, trust in government, and trust in civic organizations on the perception of public conflicts. Korean Journal of Social and Personality Psychology, 25(2), 1-16.

Lickel, B., Steele, R., & Schmader, T. (2011).  Group-based shame and guilt: Emerging directions in research. Social and Personality Psychology Compass, 5, 153-163.

Loughnan, S., Kuppens, P., Allik, J., Balasz, K., de Lemus, S., Dumont, K., Gargurevich, R., Hidegkuti, I., Leidner, B., Matos, L., Park, J., Realo, A., Shi, J., Sojo, V., Tong, Y.-Y., Vaes, J., Verduyn, P., Yeung, V., & Haslam, N. (2011). Social inequality is linked to biased self-perception. Psychological Science, 22(10), 1254-1258.

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). Washington DC: American Psychological Association.

Pettigrew, T. F., & Tropp, L. R. (2011). When groups meet: The dynamics of intergroup contact. New York: Psychology Press.

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.

Staub, E. (2011). Overcoming evil: Genocide, violent conflict and terrorism. New York: Oxford University Press.

Staub, E., & Ryono, A. (2011). Steps toward reconciliation: Understanding and healing in post-genocide Rwanda and beyond. In M. Pilisuc & M. N. Nagler (Eds.), Peace movements worldwide: Vol.2. Players and practices in resistance to war (pp. 200-218). Santa Barbara, CA: Praeger.

Tropp, L. R., & Mallett, R. (Eds.) (2011). Moving beyond prejudice reduction: Pathways to positive intergroup relations. Washington D.C.: American Psychological Association.

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). Washington DC: American Psychological Association.

Usoof-Thowfeek, R., Janoff-Bulman, R. & Tavernini, J. (2011). Moral judgments and the role of social harm: Differences in automatic versus controlled processing. Journal of Experimental Social Psychology, 47(1), 1-6.

Vollhardt, R. J. & Staub, E. (2011). Inclusive altruism born of suffering: The relationship between adversity and prosocial attitudes and behavior  toward disadvantaged  outgroups. American Journal of Orthopsychiatry. 81(3), 306-314.

Vollhardt, J.R. (2011a). Beyond damage and social reproduction: Meaning making, agency, and living history among youth in the aftermath of violent conflict. Invited book review, Peace and Conflict: Journal of Peace Psychology, 17, 210-214.

Vollhardt, J.R. (2011b). Power and dehumanization as barriers to intergroup dialogue: Commentary on “Toward a dialogical model of conflict resolution” (Seamus A. Power). Society and Psychology, 4, 71-75.



Bilali, R. (2010). Assessing the internal validity of international image theory in the context of Turkey – U.S. relations. Political Psychology, 31, 275-303.

Crump, S., Hamilton, D. L., Sherman, S. J., Lickel, B., & Thakkar, V.  (2010). Group entitativity and similarity:  Their differing patterns in perceptions of groups. European Journal of Social Psychology, 40, 1212-1230.

Denson, T.F., Iyer, R., & Lickel, B. (2010). Racist or racism? Taxometric  support for a dimensional latent structure of explicit prejudice. Group Processes and Intergroup Relations, 13, 113-128.

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.

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.

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.

Leidner, B., Castano, E., Zaiser, E., & Giner-Sorolla, R. (2010). Ingroup glorification, moral disengagement, and justice in the context of collective violence. Personality and Social Psychology Bulletin, 36(8), 1115-1129.

Loughnan, S., Leidner, B., Doron, G., Haslam, N., Kashima, Y., Tong, J., & Yeung, V.(2010). Universal biases in self-perception: Better and more human than average. British Journal of Social Psychology, 49(3), 627-636.
Spanovic, M., Lickel, B., Petrovic, N., & Denson T. F. (2010).  Fear and anger as predictors of motivation for intergroup aggression: Evidence from Serbia and Republika Srpska. Group Processes and Intergroup Relations, 13, 725-739.

Staub, E., Pearlman, L.A. and Bilali, R. (2010).  Understanding the roots and impact of violence and psychological recovery as avenues to reconciliation after mass violence and intractable conflict: Applications to national leaders, journalists, community groups, public education through radio, and children. In G. Salomon & E. Cairns (Eds). Handbook of Peace Education (pp. 269-286). New York: Psychology Press.

Tredoux, C. G., Noor, N. M., de Paulo, L., Aboud, F., & Tropp, L. R. (2010). Measuring prejudice in children: Overview and recommendations. Una Global Working Paper, Belfast: Una Global.

Usoof-Thowfeek, R. (2010). The impact of Buddhist and Hindu beliefs on post traumatic growth in Sri Lanka. Wellbeing and Development. Colombo, Sri Lanka: University of Colombo.

Vasquez, E. A., Lickel, B., & Hennigan, K., (2010). Gangs, displaced, and group-based aggression. Aggression and Violent Behavior, 15, 130-140.

Vollhardt, J. R. (2010). Enhanced external and culturally sensitive attributions after extended intercultural contact. British Journal of Social Psychology, 49, 363-383.



Janoff-Bulman, R. & Usoof-Thowfeek, R. (2009). Shifting moralities: Post – 9/11 responses to shattered assumptions.  In M. J. Morgan (Ed.) The Impact of 9/11 on Psychology and Education; The day that changed everything (pp. 81-96). Hants, United Kingdom: Palgrave McMillan.

Scarnier, M., Schmader, T, & Lickel, B. (2009).  Parental shame and guilt:  Distinguishing emotional responses to a child’s wrongdoings.  Personal Relationships, 16, 205-220.

Steele, R. R. (2009). Psychological motivation for genocide. Review of Why not kill them all? The logic and prevention of mass political murder (D. Chirot & C. McCauley). International Journal on World Peace, 26, 83-88.

Staub, E. & Pearlman, L.A. (2009). Reducing intergroup prejudice and conflict: A commentary. Journal of Personality and Social Psychology, 96, 588-594.

Tropp, L., & Kim, J. (2009). Ethnicity. In M. Hogg & J. Levine (Eds.), Encyclopedia of Group Processes and Intergroup Relations (pp. 246-248). Thousand Oaks, CA: Sage.

Tropp, L. R., & Pettigrew, T. F. (2009). Reducing ethnocentrism through intergroup contact: Summarizing results from a meta-analytic review. In G. L. Carter (Ed.), Empirical approaches to Sociology, 5th edition. (pp.104-110) Boston: Allyn & Bacon.

Shapiro, I., Bilali, R., & Vollhardt, J. (2009). Peace. In S. J. Lopez (Ed.), Encyclopedia of positive psychology, Vol. 2 (pp. 672-676). Oxford, UK: Wiley-Blackwell.

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). New York: Springer.

Vollhardt, J.R. (2009a). Altruism born of suffering and prosocial behavior following adverse life events: A review and conceptual integration. Social Justice Research, 22, 53-97. 

Vollhardt, J. R. (2009b). The role of victim beliefs in the Israeli-Palestinian conflict: Risk or potential for peace? Peace and Conflict: Journal of Peace Psychology, 15, 135-159.



Booker, C.L., Unger, J.B., Azen, S.P., Baezconde-Garbanati, L., Lickel, B. & Johnson, C.A. (2008).  A longitudinal analysis of stressful life events, smoking behaviors, and gender differences in a multicultural sample of adolescents. Substance Use and Misuse, 43, 1521-1543.

Janoff-Bulman, R. &  Werther, A. (2008) The social psychology of respect: Implications for delegitimization and reconciliation. In A. Nadler, M. E. Thomas & J.D. Fisher, (Eds.), The Social Psychology of Intergroup Reconciliation  (pp.145-170).  New York: Oxford University Press.

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.

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.

Stenstrom, D., Lickel, B., Denson, T. & Miller, N. (2008). The roles of ingroup identification and outgroup entitativity in intergroup retribution.  Personality and Social Psychology Bulletin, 34, 1570-1582

Staub, E., Pearlman, L., &  Bilali, R. (2008). Psychological recovery, reconciliation and the prevention of new violence: an approach and its uses in Rwanda. In B. Hart (Ed.), Peacebuilding in Traumatized  Societies (pp. 131-154). Lanham, MD: University Press of America.
Staub, E. (2008). Promoting reconciliation after genocide and mass killing in Rwanda—and other post-conflict settings.  In A. Nadler, T. Malloy & J. D. Fisher (Eds.), Social Psychology of Intergroup Reconciliation (pp. 395-422). New York: Oxford University Press.

Staub, E. (2008). The heroism of survivors: Survivors saving themselves, its impact on their lives, and altruism born of suffering.  In D. C. Berliner & H. Kupermintz, (Eds.), Fostering change in institutions, environments, and people: A festschrift in honor of Gavriel Salomon (pp. 211-219). New York: Routledge.

Staub, E. (2008). The origins of genocide and mass killing, prevention, reconciliation and their application to Rwanda. In V. M. Esses. & R. A. Vernon (Eds.), The breakdown of ethnic relations: Why neighbors kill (pp. 245 - 268). Malden, MA: Blackwell.

Staub, E. & Vollhardt, J. (2008). Altruism born of suffering: The roots of caring and helping after experiences of personal and political victimization. American Journal of Orthopsychiatry, 78, 267-280.

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). Malden, MA: Blackwell.

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: Oxford University Press.

Vinthagen, S., & Lilja, M. (Eds.) (2009). Motstand (Resistance). Stockholm, Sweden: Adlibris.

Vollhardt, J. & Bilali, R. (2008). Social psychology’s contribution to the psychological study of peace: A review. Social Psychology, 39, 12-25.

Wagner, U., Tropp, L. R., Finchilescu, G., & Tredoux, C. (Eds.) (2008). Improving intergroup relations: Building on the Legacy of Thomas F. Pettigrew. Malden, MA: Wiley-Blackwell.



Lillie, C., & Janoff-Bulman, R. (2007). Macro versus micro justice and perceived fairness of truth and reconciliation commissions. Peace and Conflict: Journal of Peace Psychology, 13(2), 221-236.

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.

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 (pp. 125-144). San Diego: Elsevier.

Ronquillo, J., Denson, T. F., Lickel, B., Lu, Z. L., Nandy A., & Maddox, K. B. (2007). The effects of skin tone on race-related amygdala activity: An fMRI investigation. Social Cognitive and Affective Neuroscience, 2, 39-44.

Staub, E. (2007). Evil: Understanding bad situations and systems, but also personality and group dynamics. Review of P. Zimbardo, The Lucifer Effect: Understanding how good people turn evil. PsychCritiques, 52(32).

Staub, E. (2007). Preventing violence and terrorism and promoting positive relations between Dutch and Muslim communities in Amsterdam. Peace and Conflict: Journal of Peace Psychology, 13(3), 333-361.

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.

Tropp, L. R. (2007). Perceived discrimination and interracial contact: Predicting interracial closeness among Black and White Americans. Social Psychology Quarterly, 70, 70-81.

Tropp, L. R. (2007). Intergroup relations. In R. Baumeister and K. Vohs (Eds.), Encyclopedia of Social Psychology (pp. 494-495). Thousand Oaks, CA: Sage.

Tropp, L. R., & Bianchi, R. A. (2007). Interpreting references to group membership in context: Feelings about intergroup contact depending on who says what to whom. European Journal of Social Psychology, 37, 153-170.

Vollhardt, J., Coutin, M., Staub, E., Weiss, G., & Deflander, J. (2007). Deconstructing hate speech in the DRC: A psychological media sensitization campaign. Journal of Hate Studies, 5, 15-36.



Frey, F. E., & Tropp, L. R. (2006). Being seen as individuals versus as group members: Extending research in metaperception to intergroup contexts. Personality and Social Psychology Review, 10, 265-280.

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.

Nagda, B., Tropp, L. R., & Paluck, E. (Eds.) (2006). Special Issue, Reducing prejudice and promoting social inclusion: Integrating research, theory, and practice on intergroup relations. Journal of Social Issues, 62(3), 439 -451.

Pettigrew, T. F., & Tropp, L. R. (2006). A meta-analytic test of intergroup contact theory. Journal of Personality and Social Psychology, 90, 751-783.

Staub, E. and Pearlman, L.A.(2006). Advancing healing and reconciliation. In L. Barbanel & R. Sternberg (Eds.), Psychological interventions in times of crisis (pp. 213-244). New York: Springer-Verlag.

Staub, E. (2006). The cultural and psychological origins of war with notes on prevention. In C. E. Stout & M. Fitzduff (Eds.). The psychology of resolving global conflicts: from war to peace (Vol. 2, pp. 1-20) Westport, CT: Praeger.

Staub, E. (2006). The origins, prevention and prediction of collective violence: Social conditions, culture, group relations and the role of leaders. In T. Garling, G. Backenroth-Ohsako, & B. Ekehammer (Eds.), Diplomacy and psychology: Prevention of armed conflicts after the Cold War. (pp. 182-207). Singapore: Marshall Cavendish Academic.

Staub, E. (2006). Reconciliation after genocide, mass killing or intractable conflict: understanding the roots of violence, psychological recovery and steps toward a general theory. Political Psychology, 27(6), 867-895.

Staub, E. & Pearlman, L.A. (2006). Promoting reconciliation and forgiveness after mass violence: Rwanda and other settings. In Forgiveness: A Sampling of Research Results. (pp. 23-25). American Psychological Association. Washington DC: Office of International Affairs.

Tropp, L. R., & Bianchi, R. A. (2006). Valuing diversity and intergroup contact. Journal of Social Issues, 62, 533-551.

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.

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). Mahwah, NJ: Erlbaum.