Littman, R., Murrar, S., & Trofimchuk, V. (forthcoming). Social norms in conflict settings. In Tropp, L. & Taylor, L. (Eds). Oxford handbook of intergroup conflict (2nd edition). Oxford University Press.
Halperin, E.*, Hameiri, B.*, & Littman, R.* (2023). Psychological Intergroup Interventions: Evidence-based Approaches to Improve Intergroup Relations. Routledge.
Littman, R., Scacco, A., & Weiss, C. (2023). Reducing prejudice through intergroup contact interventions. In Halperin, E., Hameiri, B., & Littman, R. (Eds), Psychological Intergroup Interventions: Evidence-based Approaches to Improve Intergroup Relations. Routledge.
Moore-Berg, S., Bernstein, K.*, Gallardo, R.*, Hameiri, B.*, Littman, R.*, O’Neil, S*., & Pasek, M*. (2022). Translating social science for peace: Benefits, challenges, and recommendations for conducting translational research. Peace and Conflict: Journal of Peace Psychology.
Blair, G.*, Littman, R*, Nugent, E*, Wolfe, R*, Bukar, M., Crisman, B., Etim, A., Hazlett, C., & Kim, J. (2021). Trusted Authorities Can Change Minds and Shift Norms During Conflict. PNAS.
Littman, R., Estrada, S., Stagnaro, M. N., Dunham, Y., Rand, D. G., & Baskin-Sommers, A. (2019). Community Violence and Prosociality: Experiencing and Committing Violence is Positively Associated with Norm-Enforcing Punishment but not Cooperation. Social Psychological and Personality Science. Replication materials.
Littman, R. (2018). Perpetrating Violence Increases Identification with Violent Groups: Survey Evidence from Former Combatants. Personality and Social Psychology Bulletin. Replication materials.
Fair, C. C.*, Littman, R.*, & Nugent, E*. (2018). Conceptions of Shari`a and Support for Democratic Values and Militancy in Pakistan. Political Science Research and Methods. Replication materials.
Fair, C. C.*, Littman, R.*, Malhotra, N.*, & Shapiro, J.* (2018). Relative Poverty, Perceived Violence, and Support for Militant Politics: Evidence from Pakistan. Political Science Research and Methods. Replication materials.
Stagnaro, M. N., Littman, R., & Rand, D. G. (2018). Individual Difference in Acts of Self-Sacrifice. Behavioral and Brain Sciences, 41, E217. Commentary on Whitehouse (2018).
Littman, R. & Paluck, E. L. (2015). The Cycle of Violence: Understanding Individual Participation in Collective Violence. Advances in Political Psychology.
Trofimchuk, V. & Littman, R. (2026). Common = Ineffective? A Replication Attempt of the Normative Dilution Effect in the Context of Political Apologies. Journal of Experimental Social Psychology.
Voelkel, J. G., Stagnaro, M. N., Chu, J.,…Littman, R.,…& Willer, R. (2024). Megastudy testing 25 treatments to reduce anti-democratic attitudes and partisan animosity. Science.
Littman, R., Bilali, R., & Hameiri, B. (2023). Promoting peace through mass media interventions. In Halperin, E., Hameiri, B., & Littman, R. (Eds), Psychological Intergroup Interventions: Evidence-based Approaches to Improve Intergroup Relations. Routledge.
Blair, G.*, Littman, R.*, & Paluck, E. L.* (2019). Motivating the Adoption of New Community-Minded Behaviors: An Empirical Test in Nigeria. Science Advances. Pre-registration and replication materials.
Wu, S. & Littman, R. (2024). Field research methods. In Reis, H., West, T., & Judd, C. (Eds), Handbook of research methods in social and personality psychology (3rd edition). Cambridge University Press.
Littman, R.*, Wolfe, R.*, Blair, G.*, & Ryan, S (2023). Evidence required for ethical social science. Science.
Ferguson, J.*, Littman, R.*, Christensen, G.*, Paluck, E. L.*, Swanson, N.*, Wang, Z.*, Miguel, E.*, Birke, D.*, & Pezzuto, J. H.* (2023). Survey of open science practices and attitudes in the social sciences. Nature Communications.
Swanson, N.*, Christensen, G.*, Littman, R.*, Birke, D.*, Miguel, E.*, Paluck, E. L.*, & Wang, Z*. (2020). Research Transparency Is on the Rise in Economics. AEA Papers and Proceedings.
Gomila, R., Littman, R., Blair, G., & Paluck, E. L. (2017). The Audio Check: A Method for Improving Data Quality and Detecting Data Fabrication. Social Psychological and Personality Science.
Dunham, S.*, Fair, C. C.*, Littman, R.*, Nugent, E.*, & Robbins, N.* (2026). Comparative sharia: Measuring support for Islamism cross-nationally. Politics and Religion.
Aksunger, N.*, Vernot, C.*, Littman, R.*, Voors, M.*, Meriggi, N*.,…,Janssens, W., & Mobarak, M. (2023). COVID-19 and Mental Health in 8 Low- and Middle-Income Countries: A Prospective Cohort Study. PLOS Medicine.
Arce, J., S., Warren, S. S., Meriggi, N. F., Scacco, A….Littman, R….Humphreys, M., Mobarak, A. M., & Omer, S. B. (2021). COVID-19 Vaccine Acceptance and Hesitancy in Low- and Middle-Income Countries. Nature Medicine.
Littman, R.*, Nair, N.*, Hirayama, Y., Adeojo, O., Bernstein, K., & Hameiri, B. Can victimhood-based interventions reduce support for political violence? Evidence from an intervention tournament.
Nair, N., Trofimchuk, V., Estabrook, C., & Littman, R. The development and validation of the Collective Victimhood Scale (CVS).
Littman, R.*, Zheng, Y.*, Novak, L., & Grabowski, K. Judging ingroup vs. outgroup norm violators: Evidence for both ingroup favoritism and derogation.
Littman, R., Blair, G., Wolfe, R., Bukar, M., Kim, J., & Badu, F. Apologies promote reconciliation in violent conflict: Experimental evidence from Nigeria.
Calif, N., Kenett, Y., Littman, R., Bernstein, K., & Hameiri, B. Belief system structure and intergroup relations: A network analysis of majority-minority differences in Israel.
Pasek, M., Moore-Berg, S., Landry, A., Kteily, N., & Littman, R. A video intervention correcting partisans’ inaccurate meta-perceptions reduces toxic polarization.
Littman, R., Young, L., Blair, G., Baron, H., Ley, S., Moya, A., Sotelo, S., Stecher, E., Rojas, M., Isah, A. Examining the effects of asking research participants about their experiences with political violence: A multi-site experiment in Colombia, Nigeria, and Mexico. In prep.
Rojas, M., Baron, H., Young, L., Littman, R., & Ley, S. Asking about violence: Intimate partner violence elicits stronger positive and negative reactions than criminal violence. In prep.
Littman, R., Scacco, A., Ryan, S.+, Hameiri, B., Adeojo, O., Bukar, M., Hirayama, Y., Moore-Berg, S., & Kteily, N. Improving intergroup relations through education-entertainment interventions: Evidence from Nigeria. In prep.
Littman, R. & Marks, Z. Gender differences in intergroup conflict attitudes. In prep.
Trofimchuk, V. & Littman, R. Exposure to violence and attitudes toward reconciliation with former Boko Haram members. In prep.
Nair, N. & Littman, R. Do they see me as a victim? How the (meta)perceptions of victimhood relate to intergroup attitudes and support for violence. In prep.
Littman, R., O’Neil, S., Broeckhoven, K., V., Bukar, M., & Marks, Z. (2021). Community Acceptance of Former Boko Haram Affiliates. MEAC Findings Report 7, United Nations University Centre for Policy Research.
Littman, R., O’Neil, S., Broeckhoven, K., V., Bukar, M., Marks, Z, & Badu, F. (2021). Social, Economic, and Civic Reintegration of Former Boko Haram Affiliates. MEAC Findings Report 10, United Nations University Centre for Policy Research.
Littman, R., O’Neil, S., Broeckhoven, K., V., Bukar, M., & Badu, F. (2021). Criminal and Transitional Justice Preferences for Former Boko Haram Associates. MEAC Findings Report 12, United Nations University Centre for Policy Research.
Littman, R., O’Neil, S., Broeckhoven, K., V., & Bukar, M. (2021). The Relationship Between Victimization and Receptivity to Returning Boko Haram Members. MEAC Findings Report 13, United Nations University Centre for Policy Research.
Littman, R. (2017). Children and Extreme Violence: Insights from Social Science on Child Trajectories Into and Out of Non-State Armed Groups. United Nations University.
* denotes equal authorship (alphabetical or randomized author order)