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Postmes, Prof. Tom

Tom Postmes
Tom Postmes

Tom Postmes is professor of Social Psychology. He completed his PhD at the University of Amsterdam, and was professor at the University of Exeter from 2004 to 2008. Postmes has won several international 
prizes, including research fellowships from the KNAW (1998) and the British ESRC (2003). His publications have appeared in renowned journals across multiple disciplines, such as psychology, communication and management.

Postmes studies how people influence each other's ideas and behaviour. Even though people in the Western world like to see themselves as independent individuals, we continually conform to fashions, norms and
social structures. This is apparent in many different forms of collective behavior: on the stock exchange, at work, during an old-fashioned demonstration or in a modern flashmob organized via Internet. In his research Postmes shows how everyday interactions can lead to such collective behavior. This is more than mere imitation: communication initiates the formation of new norms, values and social identities. Together with several fellow researchers and dance group Random Collision, he is also studying the social impact of watching a dance performance.

Postmes is coordinator of the Kenniscentrum Aardbevingen en Duurzame Ontwikkeling (KADO) (Knowledge center for earthquakes and sustainable development) of the university. In the 'Gronings Perspectief' project, Postmes is studying subjects such as safety, health and future prospects in Groningen in relation to earthquakes.

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Article in Trouw

2020

Akkus, B., Postmes, T., Stroebe, K., & Baray, G. (2020). Cultures of conflict: Protests, violent repression, and community values. British Journal of Social Psychology, 59(1), 49-65. https://doi.org/10.1111/bjso.12328
Busscher, N., de Vries, P., Adams, W., & Postmes, T. (2020). Gaswinning, aardbevingen en de maatschappelijke gevolgen voor de provincie Groningen en haar bewoners - Overzicht onderzoek juni 2018-juli 2019. Kennisplatform Leefbaar en Kansrijk Groningen.
Kuppens, T., Gootjes, F., Boendermaker, M., Gordijn, E., & Postmes, T. (2020). Ongenoegen, migratie, gastvrijheid en maatschappelijke onrust. Wetenschappelijk Onderzoek- en Documentatiecentrum (WODC) .
Roos, C. A., Postmes, T., & Koudenburg, N. (2020). The micro-dynamics of social regulation: Comparing the navigation of disagreement in text-based online and face-to-face discussions. Group Processes and Intergroup Relations, 23(6), 902-917. https://doi.org/10.1177/1368430220935989
Greijdanus, H., de Matos Fernandes, C. A., Turner-Zwinkels, F., Honari, A., Roos, C. A., Rosenbusch, H., & Postmes, T. (2020). The psychology of online activism and social movements: Relations between online and offline collective action. Current Opinion in Psychology, 35, 49-54. https://doi.org/10.1016/j.copsyc.2020.03.003
Roos, C., Koudenburg, N., & Postmes, T. (2020). Why online social regulation may fail: The lack of ambiguity and responsiveness. Poster session presented at Interdisciplinary Inspiration BSS Symposium, Groningen, Netherlands.

2019

Assilamehou-Kunz, Y., Postmes, T., & Teste, B. (2020). A normative perspective on the linguistic intergroup bias: How intragroup approval of ingroup members who use the linguistic intragroup bias perpetuates explicit intergroup bias. European Journal of Social Psychology, 81-96, 81-96. https://doi.org/10.1002/ejsp.2616
Otjes, S., Stroebe, K., & Postmes, T. (2020). When Voting Becomes Protest: Mapping Determinants of Collective Action Onto Voting Behavior. Social Psychological and Personality Sciences, 11(4), 513-521. https://doi.org/10.1177/1948550619872482
Van de Vliert, E., Postmes, T. T., & Van Lange, P. A. M. (2019). Climatic Ignition of Motivation. In A. J. Elliot (Ed.), Advances in Motivation Science (Vol. 6, pp. 157-184). London, UK: Academic Press. https://doi.org/10.1016/bs.adms.2018.09.001
Stroebe, K., Postmes, T., Schoutens, L., Boendermaker, M., Kanis, B., Richardson, J., ... Greven, F. (2019). De maatschappelijke impact van de beving van Westerwijtwerd. Rijksuniversiteit Groningen.
Stroebe, K., Postmes, T., Kanis, B., Richardson, J., Bovenhoff, M., Schoutens, L., & Broer, J. (2019). De sociale impact van de gaswinning in Groningen: Stand van zaken, metingen juni & september 2019. Rijksuniversiteit Groningen.
Jans, L., Koudenburg, N., Dillmann, J., Wichgers, L., Postmes, T., & den Hartigh, R. J. R. (2019). Dynamic reactions to opinion deviance: The role of social identity formation. Journal of Experimental Social Psychology, 84, [103803]. https://doi.org/10.1016/j.jesp.2019.04.001
Stroebe, K., Postmes, T., Boendermaker, M., Kanis, B., Richardson, J., Bovenhoff, M., ... Greven, F. (2019). Gaswinning en versterking, de sociale impact voor Groningers. Groningen: Heymans Institute, University of Groningen.
Postmes, T., Kanis, B., Boendermaker, M., Richardson, J., & Stroebe, K. (2019). Maatschappelijke impact van de beving van Westerwijtwerd (22 mei 2019): Een eerste analyse. Rijksuniversiteit Groningen.
Stroebe, K., Postmes, T., Boendermaker, M., Richardson, J., Bovenhoff, M., & Kanis, B. (2019). Sociale samenhang, samenwerking en veerkracht in het Groningse gaswinningsgebied. Groningen: Heymans Institute, University of Groningen.
Titlestad, K., Snijders, T. A. B., Durrheim, K., Quayle, M., & Postmes, T. (2019). The dynamic emergence of cooperative norms in a social dilemma. Journal of Experimental Social Psychology, 84, [103799]. https://doi.org/10.1016/j.jesp.2019.03.010
van Mourik Broekman, A., Koudenburg, N., Gordijn, E. H., Krans, K. L. S., & Postmes, T. (2019). The Impact of Art: Exploring the Social-Psychological Pathways That Connect Audiences to Live Performances. Journal of personality and social psychology, 116(6), 942-965. https://doi.org/10.1037/pspi0000159
Roos, C., Koudenburg, N., & Postmes, T. (2019). The social function of ambiguity: A new methodology to compare online and offline discussions. Abstract from ASPO conference 2019, Wageningen, Netherlands.
Roos, C. A., Postmes, T., & Koudenburg, N. (2019). Why social regulation online fails: more fudge is needed. Poster session presented at 10th Annual Doctoral Consortium of the Communication and Technology Division of the International Communication Association, Washington DC, United States.
Roos, C., Postmes, T., & Koudenburg, N. (2019). Why social regulation online fails: more fudge is needed. Poster session presented at UG Meet&Greet XL: Digital Society, Groningen, Netherlands.

2018

Postmes, T., Wichmann, L. J., van Valkengoed, A. M., & van der Hoef, H. (2019). Social identification and depression: A meta-analysis. European Journal of Social Psychology, 49(1), 110-126. https://doi.org/10.1002/ejsp.2508
Stroebe, K., Postmes, T., & Roos, C. A. (2019). Where did inaction go? Towards a broader and more refined perspective on collective actions. British Journal of Social Psychology, 58(3), 649-667. https://doi.org/10.1111/bjso.12295
Stroebe, K., Postmes, T., Boendermaker, M., LeKander, B., & Richardson, J. (2018). De sociale impact van gaswinning in Groningen: Stand van zaken, meting Juni. Gronings Perspectief.
Armenta, B. M., Scheibe, S., Stroebe, K., Postmes, T., & Van Yperen, N. W. (2018). Dynamic, Not Stable: Daily Variations in Subjective Age Bias and Age Group Identification Predict Daily Well-Being in Older Workers. Psychology and Aging, 33(4), 559-571. https://doi.org/10.1037/pag0000263
Postmes, T., Stroebe, K., Richardson, J., LeKander, B., Greven, F., & Broer, J. (2018). Gevolgen van bodembeweging voor Groningers: Ervaren veiligheid, gezondheid en toekomstperspectief 2016-2017. Heymans Institute, University of Groningen.
Postmes, T., & Koudenburg, N. (2018). Social Regulation in a Digital Society. Abstract from ASPO Conference, Amsterdam, Netherlands.
Koudenburg, N., & Postmes, T. (2018). Social Regulation in a Digital Society. Poster session presented at Symposium on Interpersonal Dynamics, Zwolle, Netherlands.
Koudenburg, N., & Postmes, T. (2018). Social Regulation in a Digital Society. Poster session presented at KLI Conference 2018, Zeist, Netherlands.
Postmes, T., & Koudenburg, N. (2018). Social Regulation in a Digital Society. Abstract from Etmaal van de communicatiewetenschap 2018, Ghent, Belgium.
Roos, C. A., Koudenburg, N., & Postmes, T. (2018). Social Regulation in a Digital Society. Poster session presented at KLI Conference 2018, Zeist, Netherlands.
Roos, C. A., Postmes, T., & Koudenburg, N. (2018). Social Regulation in a Digital Society. Abstract from Etmaal van de communicatiewetenschap 2018, Ghent, Belgium.
Roos, C. A., Koudenburg, N., & Postmes, T. (2018). Social Regulation in a Digital Society. Poster session presented at Symposium on Interpersonal Dynamics, Zwolle, Netherlands.
Roos, C. A., Postmes, T., & Koudenburg, N. (2018). Social Regulation in Online and FtF Chats. Abstract from ASPO Conference 2018, Nijmegen, Netherlands.
Greijdanus, H., & Postmes, T. (2018). Sociale media en collectieve actie rondom de gasboringen in Groningen. Groningen: Rijksuniversiteit Groningen.

2017

van Mourik Broekman, A., Gordijn, E., Koudenburg, N., & Postmes, T. (2018). Reshaping social structure Through Performances: Emergent solidarity between actors and observers. Journal of Experimental Social Psychology, 76, 19-32. https://doi.org/10.1016/j.jesp.2017.12.002
van der Bles, A. M., Postmes, T., LeKander-Kanis, B., & Otjes, S. (2018). The Consequences of Collective Discontent: A New Measure of Zeitgeist Predicts Voting for Extreme Parties. Political Psychology, 39(2), 381-398. https://doi.org/10.1111/pops.12424
Stroebe, K., Postmes, T., & Roos, C. (2017). A disaster unfolding: The meaning of ‘inaction’ in response to collective injustic. Abstract from EASP General Meeting 2017, Granada, Spain.
Postmes, T., LeKander, B., Stroebe, K., Greven, F., & Broer, J. (2017). Aardbeving en Gezondheid 2016: Resultaten van de GGD gezondheidsmonitor 2016. GGD Groningen.
Koudenburg, N., Postmes, T., & Gordijn, E. (2017). Beyond Content of Conversation: The Role of Conversational Form in the Emergence and Regulation of Social Structure. Personality and Social Psychology review, 21(1), 50-71. https://doi.org/10.1177/1088868315626022
Akkus, B., Postmes, T., & Stroebe, K. (2017). Community Collectivism: A social dynamic approach to conceptualizing culture. PLoS ONE, 12(9), [e0185725]. https://doi.org/10.1371/journal.pone.0185725
Postmes, T., Gordijn, E., Kuppens, T., Gootjes, F., & Albada, K. (2017). Draagvlak migratiebeleid. Wetenschappelijk Onderzoek- en Documentatiecentrum (WODC) .
Armenta, B. M., Stroebe, K., Scheibe, S., Postmes, T., & Van Yperen, N. W. (2017). Feeling younger and identifying with older adults: Testing two routes to maintaining well-being in the face of age discrimination. PLoS ONE, 12(11), [e0187805]. https://doi.org/10.1371/journal.pone.0187805
Armenta Gutiérrez, B. M., Stroebe, K., Scheibe, S., Van Yperen, N. W., Stegeman, A., & Postmes, T. (2017). Permeability of group boundaries: Development of the concept and a scale. Personality and social psychology bulletin, 43(3), 418-433. https://doi.org/10.1177/0146167216688202
Roos, C. A., Postmes, T., & Koudenburg, N. (2017). Social Regulation in a Digital Society. Abstract from ASPO Conference, Amsterdam, Netherlands.
Postmes, T., Stroebe, K., Richardson, J., LeKander, B., Oldersma, F., Broer, J., & Greven, F. (2017). Veiligheidsbeleving, gezondheid en toekomstperspectief van Groningers: Wetenschappelijk rapport 2. Groningen: Rijksuniversiteit Groningen.
Postmes, T., Stroebe, K., Richardson, J., LeKander, B., & Greven, F. (2017). Veiligheidsbeleving, gezondheid en toekomstperspectief van Groningers: Wetenschappelijk rapport 3. Heymans Institute, University of Groningen.

2016

de Vos, B., van Zomeren, M., Gordijn, E. H., & Postmes, T. (2018). When does the communication of group-based anger increase outgroup empathy in intergroup conflict? The role of perceived procedural unfairness and outgroup consensus. Group Processes & Intergroup Relations, 21(4), 533-548. https://doi.org/10.1177/1368430216674340
Turner-Zwinkels, F. M., van Zomeren, M., & Postmes, T. (2017). The moral dimension of politicized identity: Exploring identity content during the 2012 Presidential Elections in the USA. British Journal of Social Psychology, 56(2), 416-436. https://doi.org/10.1111/bjso.12171
Stroebe, K., Postmes, T., & Roos, C. (2016). A disaster unfolding: Are people active or passive in response to collective injustice?. Abstract from ISJR 2016, Canterbury, United Kingdom.
van der Bles, A. M., Postmes, T., Meijer, R., & Jetten, J. (2016). A Zeitgeist of decline all over the world? The psychometrics of collective discontent across 28 countries. Abstract from ASPO annual meeting 2016, Leiden, Netherlands.
van der Bles, A. M., Postmes, T., & Meijer, R. (2016). A Zeitgeist of decline? The psychometrics of collective discontent. Abstract from EASP medium sized meeting on the Psychology of Political Ideology , Oppurg, Germany.
van der Bles, A. M., Postmes, T., Meijer, R., & Jetten, J. (2016). A Zeitgeist of decline? The psychometrics of collective discontent. Abstract from ISJR 2016, Canterbury, United Kingdom.
Reicher, S. D., Spears, R., Postmes, T., & Kendec, A. (2016). Disputing deindividuation: Why negative group behaviours derive from group norms, not group immersion. Behavioral and Brain Sciences, 39, [161]. https://doi.org/10.1017/S0140525X15001491
Stroebe, K., Postmes, T., LeKander, B., Richardson, J., Oldersma, F., & Broer, J. (2016). Het risico van de gaswinning: Effecten van de Groningse gaswinning op veiligheidsbeleving, risicoperceptie en gezondheid. Ruimtelijke Veiligheid en Risicobeleid, 7, 36-47.
van der Bles, A. M., Turner, F., & Postmes, T. (2016). Studying the Zeitgeist of “the crisis”: How discussions influence the Zeitgeist among junior social psychologists.. Abstract from ISJR 2016, Canterbury, United Kingdom.
Postmes, T., & Stroebe, K. (2016). Tussenrapport 1: Gronings perspectief. Groningen: Heymans Institute, University of Groningen.
Postmes, T., & Stroebe, K. (2016). Tussenrapport 2: Gronings perspectief. Heymans Institute, University of Groningen.
Postmes, T., Stroebe, K., Richardson, J., LeKander, B., & Oldersma, F. (2016). Veiligheidsbeleving, gezondheid en toekomstperspectief van Groningers: Wetenschappelijk rapport 1. Heymans Institute, University of Groningen.

2015

Turner-Zwinkels, F. M., Postmes, T., & van Zomeren, M. (2016). Developing critical awareness: the consequences of action and reflection for perceptions of group injustices. Journal of applied social psychology, 46(3), 143-157. https://doi.org/10.1111/jasp.12351
Van Yperen, N. W., Blaga, M., & Postmes, T. (2015). A meta-analysis of the impact of situationally induced achievement goals on task performance. Human Performance, 28(2), 165-182. https://doi.org/10.1080/08959285.2015.1006772
Turner-Zwinkels, F. M., Postmes, T., & van Zomeren, M. (2015). Achieving harmony among different social identities within the self-concept: The consequences of having a group-based philosophy of life. PLoS ONE, 10(11), [e0137879]. https://doi.org/10.1371/journal.pone.0137879
Stroebe, K., Postmes, T., Täuber, S., Stegeman, A., & John, M-S. (2015). Belief in a just what? Demystifying just world beliefs by distinguishing sources of justice. PLoS ONE, 10(3), [e0120145]. https://doi.org/10.1371/journal.pone.0120145
Postmes, T. (2015). Climate change and group dynamics. Nature climate change, 5(3), 195-196. https://doi.org/10.1038/nclimate2537
Haslam, S. A., Adarves-Yorno, I., & Postmes, T. (2015). Creativity Is Collective. Scientific american, 23(No 5s), 26-31.
van Mourik Broekman, A., Gordijn, E., Postmes, T., Koudenburg, N., & Krans, K. (2015). Dance for Solidarity: Uniting Dancers and Audience Through Movement. In H. Koolen, J. Naafs, R. Naber, & L. Wildschut (Eds.), Danswetenschap in Nederland (Vol. 8, pp. 79-88). Amsterdam: Vereniging voor Dansonderzoek.
Postmes, T., & Turner, F. (2015). Deindividuation, Psychology of. In J. D. Wright (Ed.), International Encyclopedia of the Social & Behavioral Sciences (2 ed., Vol. 6, pp. 38-41). Amsterdam: Elsevier.
Spears, R., & Postmes, T. (2015). Group Identity, Social Influence and Collective Action Online: Extensions and Applications of the SIDE Model. In S. S. Sundar (Ed.), The Handbook of the Psychology of Communication Technology (pp. 23-46). (Handbooks in communication and media). Wiley-Blackwell.
Armenta Gutiérrez, B., Stroebe, K., Scheibe, S., Van Yperen, N. W., Stegeman, A., & Postmes, T. (2015). Permeability of group boundaries: Development of a scale. Paper presented at ASPO conference 2015, Netherlands.
Turner-Zwinkels, F., van Zomeren, M., & Postmes, T. (2015). Politicization During the 2012 U.S. Presidential Elections: Bridging the personal and the political through an identity content approach. Personality and social psychology bulletin, 41(3), 433-445. https://doi.org/10.1177/0146167215569494
van der Bles, A. M., Postmes, T., & Meijer, R. (2015). Reconciling collective discontent with individual affluence: A social psychological approach to measuring Zeitgeist. Abstract from 2015 Political Psychology Preconference of the 16th Annual Meeting of SPSP, Long Beach, CA, United States.
van der Bles, A. M., Postmes, T., & Meijer, R. (2015). Reconciling collective discontent with individual affluence: A social psychological approach to measuring Zeitgeist. Poster session presented at Society for Personality and Social Psychology - 2015 Annual Meeting, Long Beach, United States.
Jetten, J., Mols, F., & Postmes, T. (2015). Relative Deprivation and Relative Wealth Enhances Anti-Immigrant Sentiments: The V-Curve Re-Examined. PLoS ONE, 10(10), [e0139156]. https://doi.org/10.1371/journal.pone.0139156
Greijdanus, H., Postmes, T., Gordijn, E. H., & van Zomeren, M. (2015). Steeling Ourselves: Intragroup Communication while Anticipating Intergroup Contact Evokes Defensive Intergroup Perceptions. PLoS ONE, 10(6), [e0131049]. https://doi.org/10.1371/journal.pone.0131049
Jans, L., Leach, C. W., Garcia, R. L., & Postmes, T. (2015). The development of group influence on in-group identification: A multilevel approach. Group Processes & Intergroup Relations, 18(2), 190-209. https://doi.org/10.1177/1368430214540757
Postmes, T., Akkus, B., & Stroebe, K. (2015). The discovery of the other in social and cultural psychology. Journal of Cross-Cultural Psychology, 46(10), 1336-1340. https://doi.org/10.1177/0022022115610818
van Mourik Broekman, A., Gordijn, E., Postmes, T., & Koudenburg, N. (2015). The Embodiment of Solidarity: When Audiences and Performers Unite.. Poster session presented at Heymans Symposium 2015, Groningen, Netherlands.
van der Bles, A. M., Postmes, T., & Meijer, R. (2015). Understanding collective discontent: A social psychological approach to measuring Zeitgeist. Abstract from Workshop on Identity, Emotion and Intergroup Conflict organized by Interdisciplinary Center Herzliya and the University of Groningen , Tel-Aviv-Jaffa, Israel.
van der Bles, A. M., Postmes, T., & Meijer, R. R. (2015). Understanding Collective Discontents: A Psychological Approach to Measuring Zeitgeist. PLoS ONE, 10(6), [e0130100]. https://doi.org/10.1371/journal.pone.0130100
Koudenburg, N., Postmes, T., Gordijn, E. H., & van Mourik Broekman, A. (2015). Uniform and Complementary Social Interaction: Distinct Pathways to Solidarity. PLoS ONE, 10(6), [e0129061]. https://doi.org/10.1371/journal.pone.0129061
van der Bles, A. M., Kanis, B., Otjes, S., & Postmes, T. (2015). Zeitgeist predicts protest voting. Abstract from Political Psychology conference, Amsterdam, Netherlands.
van der Bles, A. M., Kanis, B., Otjes, S., & Postmes, T. (2015). Zeitgeist predicts protest voting. Abstract from 2015 ASPO Conference, Amsterdam, Netherlands.

2014

Van Yperen, N. W., Blaga, M., & Postmes, T. (2014). A Meta-Analysis of Self-Reported Achievement Goals and Nonself-Report Performance across Three Achievement Domains (Work, Sports, and Education). PLoS ONE, 9(4), [e93594]. https://doi.org/10.1371/journal.pone.0093594
Kamans, E., van Zomeren, M., Gordijn, E. H., & Postmes, T. (2014). Communicating the right emotion makes violence seem less wrong: Power-congruent emotions lead outsiders to legitimize violence of powerless and powerful groups in intractable conflict. Group Processes & Intergroup Relations, 17(3), 286-305. https://doi.org/10.1177/1368430213502562
Koudenburg, N., Postmes, T., & Gordijn, E. H. (2014). Conversational flow and entitativity: The role of status. British Journal of Social Psychology, 53(2), 350-366. https://doi.org/10.1111/bjso.12027
Van de Vliert, E., & Postmes, T. (2014). Democracy does not promote well-being except in rich countries with demanding climates. Journal of Cross-Cultural Psychology, 45(8), 1179-1195. https://doi.org/10.1177/0022022114534983
Postmes, T., Gordijn, E., van Zomeren, M., Greijdanus, H., de Vos, B., Täuber, S., & Kamans, E. (2014). Escalation and de-escalation of intergroup conflict: The role of communication within and between groups. In C. K. W. De Dreu (Ed.), Social conflicts within and between groups (pp. 93-116). (Current issues in social psychology). Psychology Press.
Hansen, N., Postmes, T., Tovote, K. A., & Bos, A. (2014). How Modernization Instigates Social Change: Laptop Usage as a Driver of Cultural Value Change and Gender Equality in a Developing Country. Journal of Cross-Cultural Psychology, 45(8), 1229-1248. https://doi.org/10.1177/0022022114537554
Armenta Gutiérrez, B., Stroebe, K., Scheibe, S., Van Yperen, N. W., & Postmes, T. (2014). Identifying with older adults and feeling younger: Two routes to maintaining well-being in the face of ageism.. Poster session presented at KLI Conference, Driebergen-Zeist, Netherlands.
Koudenburg, N., Gordijn, E. H., & Postmes, T. (2014). "More Than Words": Social Validation in Close Relationships. Personality and social psychology bulletin, 40(11), 1517-1528. https://doi.org/10.1177/0146167214549945
Armenta Gutiérrez, B., Stroebe, K., Scheibe, S., Van Yperen, N. W., & Postmes, T. (2014). Permeability of group boundaries: Development of a scale. Paper presented at 17th general meeting of the European Association of Social Psychology (EASP), Amsterdam, Netherlands.
Turner, F., van Zomeren, M., & Postmes, T. (2014). Politicizing the Political: An identity content analysis of politicization during the 2012 U.S. Presidential Elections. Abstract from International Society of Political Psychology, Rome, Italy.
Schmitt, M. T., Branscombe, N. R., Postmes, T., & Garcia, A. (2014). The Consequences of Perceived Discrimination for Psychological Well-Being: A Meta-Analytic Review. Psychological Bulletin, 140(4), 921-948. https://doi.org/10.1037/a0035754
van Mourik Broekman, A., Gordijn, E., Postmes, T., & Koudenburg, N. (2014). The Embodiment of Solidarity: When Audiences and Performers Unite.. Poster session presented at Kurt Lewin Institute Conference, Utrecht, Netherlands.
Nieuwenhuis, M., Knight, C., Postmes, T., & Haslam, S. A. (2014). The Relative Benefits of Green Versus Lean Office Space: Three Field Experiments. Journal of experimental psychology-Applied, 20(3), 199-214. https://doi.org/10.1037/xap0000024
van der Bles, A. M., Postmes, T., & Meijer, R. (2014). Understanding Declinism: Making Sense of Zeitgeist and Measuring It.. Abstract from Kurt Lewin Institute Conference, Utrecht, Netherlands.
Koudenburg, N., Postmes, T., Gordijn, E., & van Mourik Broekman, A. (2014). Uniform and Complementary Social Interaction: Distinct Pathways to Social Unity.. Poster session presented at European Association of Social Psychology (EASP), Amsterdam, Netherlands.
Postmes, T., van Bezouw, M., & Kutlaca, M. (2014). Van collectief ongenoegen tot ordeverstoringen. Groningen: Rijksuniversiteit Groningen.
Greijdanus, H., Postmes, T., Gordijn, E. H., & van Zomeren, M. (2014). When abstraction does not increase stereotyping: Preparing for intragroup communication enables abstract construal of stereotype-inconsistent information. Social Cognition, 32(6), 505-527. https://doi.org/10.1521/soco.2014.32.6.505
van der Bles, A. M., Postmes, T., & Meijer, R. (2014). Where are we at? Demonstrating and measuring the importance of Zeitgeist for individuals and societies.. Poster session presented at Kurt Lewin Institute Conference, Utrecht, Netherlands.
van der Bles, A. M., Postmes, T., & Meijer, R. (2014). Where are we at? Demonstrating and measuring the importance of Zeitgeist for individuals and societies.. Abstract from 17th General Meeting of the European Association of Social Psychology, Amsterdam, Netherlands.

2013

Postmes, T., Haslam, S. A., & Jans, L. (2013). A single-item measure of social identification: Reliability, validity, and utility. British Journal of Social Psychology, 52(4), 597-617. https://doi.org/10.1111/bjso.12006
Hansen, N., & Postmes, T. (2013). Broadening the scope of societal change research: Psychological and political impacts of development aid. Journal of Social and Political Psychology, 1(1), 273-292. https://doi.org/10.5964/jspp.v1i1.15
Kamans, E., van Zomeren, M., Gordijn, E., & Postmes, T. (2013). Communicating the right emotion makes violence seem less wrong. Paper presented at Intergroup conflict: The cognitive, emotional, and behavioral consequences of communication and Intergroup Behaviour, Soesterberg, Netherlands.
Akkus, B., Postmes, T., & Stroebe, K. (2013). Community Collectivism: The collective level of collectivism. Poster session presented at Social Psychology Meeting, Leuven, Belgium.
Bolderdijk, J. W., Steg, L., Geller, E. S., Lehman, P. K., & Postmes, T. (2013). Comparing the effectiveness of monetary versus moral motives in environmental campaigning. Nature climate change, 3(4), 413-416. https://doi.org/10.1038/NCLIMATE1767
Koudenburg, N., Postmes, T., & Gordijn, E. H. (2013). Conversational Flow Promotes Solidarity. PLoS ONE, 8(11), [e78363]. https://doi.org/10.1371/journal.pone.0078363
de Vos, B., van Zomeren, M., Gordijn, E., & Postmes, T. (2013). De-escalating intergroup conflict through communicating group-based anger: Indications of its relational function. Paper presented at Intergroup conflict: The cognitive, emotional, and behavioral consequences of communication and Intergroup Behaviour, Soesterberg, Netherlands.
Bolderdijk, J. W., Steg, L., & Postmes, T. (2013). Fostering support for work floor energy conservation policies: Accounting for privacy concerns. Journal of Organizational Behavior, 34(2), 195-210. https://doi.org/10.1002/job.1831
Koudenburg, N., Gordijn, E., & Postmes, T. (2013). Gespreksflow en sociale validatie in intieme relaties. In R. Dotsch, E. K. Papies, T. M. Pronk, B. T. Rutjens, J. van der Toorn, & E. G. Ufkes (Eds.), Jaarboek Sociale Psychologie 2013 (pp. 113-116). Groningen: ASPO press.
Postmes, T., & Spears, R. (2013). Psychology and the Internet: Building an Integrative Social Cognitive Research Agenda. Psychological Inquiry, 24(4), 326-332. https://doi.org/10.1080/1047840X.2013.850149
Postmes, T., van Bezouw, M., Täuber, S., & van de Sande, J. P. (2013). Rellen in Nederland hebben feestelijk tintje, nog wel. Tijdschrift voor Sociale Vraagstukken.
Koudenburg, N., Postmes, T., & Gordijn, E. H. (2013). Resounding Silences: Subtle Norm Regulation in Everyday Interactions. Social Psychology Quarterly, 76(3), 224-241. https://doi.org/10.1177/0190272513496794
Postmes, T. (2013). Response to “Worrier and Warrior: Threat and Emotion Response to Protest Issues” by van Troost et al. Poster session presented at Meeting “Caught in the Act of Protest: Contextualizing Contestation”, Amsterdam, Netherlands.
Van de Vliert, E., Einarsen, S., & Postmes, T. (2013). Rethinking climatic determinism of conflict. Science, [1235367].
Hansen, N., & Postmes, T. (2013). Social change driven by ICT for development: Laptop usage instigates cultural change among children in the developing world. Paper presented at World Social Science Forum 2013, Montréal, Canada.
Postmes, T., van Bezouw, M., Täuber, S., & van de Sande, J. P. (2013). Stampij en sociale onrust in Nederland? Naar een beter begrip van 21e eeuws protest en oproer. Groningen: Rijksuniversiteit Groningen.
Haslam, S. A., Adarves-Yorno, I., Postmes, T., & Jans, L. (2013). The Collective Origins of Valued Originality: A Social Identity Approach to Creativity. Personality and Social Psychology review, 17(4), 384-401. https://doi.org/10.1177/1088868313498001
de Vos, B., van Zomeren, M., Gordijn, E. H., & Postmes, T. (2013). The Communication of "Pure" Group-Based Anger Reduces Tendencies Toward Intergroup Conflict Because It Increases Out-Group Empathy. Personality and social psychology bulletin, 39(8), 1043-1052. https://doi.org/10.1177/0146167213489140
Gordijn, E., Greijdanus, H., de Vos, B., Täuber, S., van Zomeren, M., & Postmes, T. (2013). The influence of communication between and within groups on reactions to the outgroup. Paper presented at Conflict and security meeting, Utrecht, Netherlands.
Jans, L., Postmes, T., & van Oudenhoven-van der Zee, K. (2013). The interplay between individual distinctiveness and social identity in small groups. Poster session presented at Social Psychology Meeting, Leuven, Belgium.
Postmes, T., Rabinovich, A., Morton, T., & van Zomeren, M. (2013). Towards sustainable social identities: Including our collective future in the self-concept. In H. C. M. van Trijp (Ed.), Encouraging sustainable behavior: Psychology and the environment (pp. 185-202). London: Psychology Press.
van der Bles, A. M., Postmes, T., & Meijer, R. (2013). Understanding collective discontent: Towards a social psychological approach of Zeitgeist. Poster session presented at Centre for Research in Social Psychology (CRiSP), Brisbane, Australia.
Adarves-Yorno, I., Jetten, J., Postmes, T., & Haslam, S. A. (2013). What Are We Fighting For? The Effects of Framing on Ingroup Identification and Allegiance. Journal of social psychology, 153(1), 25-37. https://doi.org/10.1080/00224545.2012.701673

2012

Van de Vliert, E., & Postmes, T. (2012). Climato-economic livability predicts societal collectivism and political autocracy better than parasitic stress does. Behavioral and Brain Sciences, 35(2), 94-95. https://doi.org/10.1017/S0140525X11001075
Van Zomeren, M., Postmes, T., & Spears, R. (2012). Collective action as civic engagement: Towards an encompassing psychological perspective. In K. J. Jonas, & T. Morton (Eds.), Restoring civic societies: The psychology of intervention and engagement following crisis. (pp. 119-134). New York: Wiley. https://doi.org/10.1002/9781118347683.ch7
Rabinovich, A., Morton, T. A., Postmes, T., & Verplanken, B. (2012). Collective self and individual choice: The effects of inter-group comparative context on environmental values and behaviour. British Journal of Social Psychology, 51(4), 551-569. https://doi.org/10.1111/j.2044-8309.2011.02022.x
Maass, A., Spears, R., Gordijn, E., & Postmes, T. (2012). EJSP Editorial: Virtual Issues, Agenda, Horizon (and beyond). European Journal of Social Psychology, 42(4), 399. https://doi.org/10.1002/ejsp.1891
Kamans, E., Van Zomeren, M., Gordijn, E., & Postmes, T. (2012). 'Gerechtvaardigd geweld'. Hoe de communicatie van machtscongruente emoties intergroepsgeweld rechtvaardigt. In N. van de Ven, M. Baas, L. van Dillen, D. Lakens, A. M. Lokhorst, & M. Strick (Eds.), Jaarboek Sociale Psychologie 2011 (pp. 99-102). Groningen, The Netherlands: ASPO press.
Postmes, T. (2012). Group Processes of Social Categorisation. Keynote Lecture at the 14th Jena Workshop on Intergroup Processes on “Group and Identity (trans)formation – Analyzing the roots of what WE are”.
Postmes, T. (2012). How groups define the self-concept. Keynote lecture at the SODoC workshop, German Psychological Society's section Social Psychology, Würzburg, Germany.
Hansen, N., Postmes, T., Van der Vinne, N., & Van Thiel, W. (2012). Information and communication technology and cultural change: How ICT usage changes self-construal and values. Social Psychology, 43, 222 - 231.
Hansen, N., Postmes, T., van der Vinne, N., & van Thiel, W. (2012). Information and Communication Technology and Cultural Change How ICT Changes Self-Construal and Values. Social Psychology, 43(4), 222-231. https://doi.org/10.1027/1864-9335/a000123
Hansen, N., Koudenburg, N., Hiersemann, R., Tellegen, P. J., Kocsev, M., & Postmes, T. (2012). Laptop usage affects abstract reasoning of children in the developing world. Computers & Education, 59(3), 989-1000. https://doi.org/10.1016/j.compedu.2012.04.013
van Zomeren, M., Postmes, T., & Spears, R. (2012). On conviction's collective consequences: Integrating moral conviction with the social identity model of collective action. British Journal of Social Psychology, 51(1), 52-71. https://doi.org/10.1111/j.2044-8309.2010.02000.x
Turner, F., Postmes, T., & van Zomeren, M. (2012). Politicizing the Political: Exploring politicized identities of U.S. citizens during the U.S. Presidential Elections. Paper presented at Doug McAdam protest seminar, Amsterdam, Netherlands.
Postmes, T., Spears, R., & Stroebe, W. (2012). Scientific Misconduct and the Myth of Self-Correction in Science. Perspectives on Psychological Science, 7(6), 670-688. https://doi.org/10.1177/1745691612460687
Jans, L., Postmes, T., & Van der Zee, K. I. (2012). Sharing differences: The inductive route to social identity formation. Journal of Experimental and Social Psychology, 48(5), 1145-1149. https://doi.org/10.1016/j.jesp.2012.04.013
Hansen, N., & Postmes, T. (2012). The discovery of an independent self: How using Information Communication Technology instigates self-concept and value change in the developing world. Abstract from the XXIst Congress of the International Association for Cross-Cultural Psychology (IACCP), Stellenbosch, South Africa.
Stroebe, W., Postmes, T., & Spears, R. (2012). What can we do to reduce scientific misconduct. Dialogue, 25(2), 7-12.
de Vos, B., van Zomeren, M., Gordijn, E., & Postmes, T. (2012). What’s done is done? Anger and contempt in a temporal focus. Paper presented at KLI Group Processes and Intergroup Behaviour Track meeting, Groningen, Netherlands.
Koudenburg, N. (Author), Postmes, T. (Author), & Gordijn, E. H. (Author). (2012). When conversations flow.. Web publication/site
Morton, T. A., Rabinovich, A., & Postmes, T. (2012). Who we were and who we will be: The temporal context of women's in-group stereotype content. British Journal of Social Psychology, 51(2), 346-362. https://doi.org/10.1111/j.2044-8309.2010.02013.x

2011

Spears, R., Lea, M., Postmes, T., & Wolbert, A. (2011). A SIDE look at computer-mediated interaction: Power and the gender divide. In Z. Birchmeier, B. Dietz-Uhler, & G. Stasser (Eds.), Strategic uses of social technology: An interactive perspective of social psychology (pp. 16-39). Cabridge: Cambridge University Press.
de Vos, B., van Zomeren, M., Gordijn, E., & Postmes, T. (2011). Anger and contempt in a temporal frame.. Paper presented at KLI Group Processes and Intergroup Behaviour track meeting, Leiden, Netherlands.
Van Zomeren, M., Postmes, T., Spears, R., & Bettache, K. (2011). Can moral convictions motivate the advantaged to challenge social inequality? Extending the social identity model of collective action. Group Processes & Intergroup Relations, 14(5), 735-753. https://doi.org/10.1177/1368430210395637
De Vos, B., Van Zomeren, M., Gordijn, E. H., & Postmes, T. (2011). De communicatie van ‘pure’ boosheid vermindert destructieve conflictintenties via verhoogde empathie. In B. Derks, R. J. Renes, K. Ruys, N. Van der Ven, & M. Vliek (Eds.), Jaarboek sociale psychologie (pp. 485-497). Groningen: ASPO press.
Koudenburg, N., Postmes, T., & Gordijn, E. H. (2011). Disrupting the flow: How brief silences in group conversations affect social needs. Journal of Experimental Social Psychology, 47(2), 512-515. https://doi.org/10.1016/j.jesp.2010.12.006
Jans, L., Postmes, T., & Van der Zee, K. I. (2011). Diversiteit Overwinnen: Coöperatie Door de Inductie van een Gedeelde Identiteit. In B. Derks, R. J. Renes, K. Ruys, N. Van der Ven, & M. Vliek (Eds.), Jaarboek sociale psychologie (pp. 195-202). Groningen: ASPO press.
Kamans, E., van Zomeren, M., Gordijn, E., & Postmes, T. (2011). ‘Gerechtvaardigd geweld’; Hoe de communicatie van macht-congruente emoties intergroepsgeweld rechtvaardigt. Paper presented at Annual conference meeting of ASPO , Tilburg, Netherlands.
Nieuwenhuis, M., & Postmes, T. (2011). Grensoverschrijdend gedrag onder Groningse studenten: Een onderzoek naar omvang, trends en verklarende factoren. Groningen: Instituut voor Integratie en Sociale Weerbaarheid (ISW).
Jans, L., Leach, C. W., Garcia, R., & Postmes, T. (2011). Het Ontstaan van groepsinvloeden op zelfdefinitie en zelfinvestering: Een multilevel benadering op groepsidentificatie. Paper presented at Annual Meeting of the Dutch Association of Social Psychological Research, Tilburg, Netherlands.
Koudenburg, N., Postmes, T., & Gordijn, E. H. (2011). If They Were to Vote, They Would Vote for Us. Psychological Science, 22(12), 1506-1510. https://doi.org/10.1177/0956797611420164
Farzan, R., Dabbish, L. A., Kraut, R. E., & Postmes, T. (2011). Increasing commitment to online communities by disigning for social presence. In Proceedings of the ACM 2011 Conference on Computer Supported Cooperative Work (pp. 321 - 330) https://doi.org/10.1145/1958824.1958874
Jans, L., Postmes, T., & van Oudenhoven-van der Zee, K. (2011). Individual distinctiveness as a spark for social identity formation. Paper presented at 13th Jena Workshop on Intergroup Processes, Jena, Germany.
Postmes, T., Nieuwenhuis, M., & Bosveld, W. (2011). Ingroup and outgroup rejection: Neighborhood effects on identification and loneliness. Paper presented at EASP General Meeting, Stockholm, Sweden.
Koudenburg, N., Postmes, T., & Gordijn, E. (2011). Korte stilte in een gesprek roept negatieve emoties op. RuG-site.
Morton, T. A., & Postmes, T. (2011). Moral duty or moral defence? The effects of perceiving shared humanity with the victims of ingroup perpetrated harm. European Journal of Social Psychology, 41(1), 127-134. https://doi.org/10.1002/ejsp.751
Greijdanus, H. J. E., Postmes, T., Van Zomeren, M., & Gordijn, E. H. (2011). Roddelen over ‘hen’: wanneer anticipatie op intergroepscontact intergroepspercepties verandert. In B. Derks, R. J. Renes, K. Ruys, N. Van der Ven, & M. Vliek (Eds.), Jaarboek sociale psychologie (pp. 177-185). Groningen: ASPO press.
Kamans, E., van Zomeren, M., Gordijn, E., & Postmes, T. (2011). Selling a just war: How communicating power congruent motions legitimizes violence. Paper presented at Presentatie BPS conference, Cambridge, United Kingdom.
Smith, L. G. E., & Postmes, T. (2011). Shaping stereotypical behaviour through the discussion of social stereotypes. British Journal of Social Psychology, 50(1), 74-98. https://doi.org/10.1348/014466610X500340
Jans, L., Postmes, T., & van Oudenhoven-van der Zee, K. (2011). Social identity formation: Diversity and groupiness. Paper presented at Invited talk at the Intergroup lab of the social psychology department, Storrs, United States.
Jans, L., Postmes, T., & van Oudenhoven-van der Zee, K. (2011). Social identity formation in diverse contexts: Heterogeneity and groupiness. Paper presented at Invited talk at the Jost lab of the social psychology department, New York, United States.
Koudenburg, N., Postmes, T., & Gordijn, E. H. (2011). Statusverschillen in Ervaren Eenheid door Gespreksflow. In N. van den Ven, M. Baas, L. van Dillen, D. Lakens, A. M. Lokhorst, & M. Strick (Eds.), Jaarboek Sociale Psychologie (pp. 103-106). Groningen, the Netherlands: ASPO press.
Hansen, N., & Postmes, T. (2011). The development of individuality: Self-concept and value change through ICT for development. Abstract from EASP General Meeting, Stockholm, Sweden.
Postmes, T. (2011). The discovery of the self. Paper presented at EASP General Meeting, Stockholm, Sweden.
Jans, L., Postmes, T., & Van der Zee, K. I. (2011). The induction of shared identity: The positive role of individual distinctiveness for groups. Personality and social psychology bulletin, 37(8), 1130-1141. https://doi.org/10.1177/0146167211407342
Jans, L., Postmes, T., & van Oudenhoven-van der Zee, K. (2011). The Interplay Between Individual Distinctiveness and Social Identity. Paper presented at Interpersonal Processes Research Meeting of the Kurt Lewin Institute, Amsterdam, Netherlands.
Jans, L., Postmes, T., & van Oudenhoven-van der Zee, K. (2011). The interplay between individual distinctiveness and social identity. Paper presented at the European Association of Social Psychology Conference as part of the symposium “The discovery of the self: Its bidirectional relation with culture and social identity”, Stockholm, Sweden.
Fischer, P., Postmes, T., Koeppl, J., Conway, L., & Fredriksson, T. (2011). The meaning of collective terrorist threat: Understanding the subjective causes of terrorism reduces its negative psychological impact. Journal of interpersonal violence, 26(7), 1432-1445. https://doi.org/10.1177/0886260510369137
Smith, L. G. E., & Postmes, T. (2011). The power of talk: Developing discriminatory group norms through discussion. British Journal of Social Psychology, 50(2), 193-215. https://doi.org/10.1348/014466610X504805
Van Zomeren, M., Postmes, T., & Spears, R. (2011). The return of moral motivation in predicting collective action against collective disadvantage. Revista de Psicologia Social, 26(2), 163-176. https://doi.org/10.1174/021347411795448956
Livingstone, A. G., Haslam, S. A., Postmes, T., & Jetten, J. (2011). ''We are, therefore we should'': evidence that in-group identification mediates the acquisition of in-group norms. Journal of applied social psychology, 41(8), 1857-1876. https://doi.org/10.1111/j.1559-1816.2011.00794.x
de Vos, B., Gordijn, E., van Zomeren, M., & Postmes, T. (2011). ‘We’ have a ‘right’ to be angry: Perceived consensus and legitimacy increase our empathy for the angry outgroup. Paper presented at NWO Conflict & Security meeting, Utrecht, Netherlands.
Morton, T. A., & Postmes, T. (2011). What does it mean to be human? How salience of the human category affects responses to intergroup harm. European Journal of Social Psychology, 41(7), 866-873. https://doi.org/10.1002/ejsp.831
Greijdanus, H., Postmes, T., Gordijn, E. H., & Van Zomeren, M. (2011). Wij zien, wij zien wat ik niet zie: De invloed van verwachte intergroepscommunicatie op de verwerking van stereotype-inconsistente informatie. In N. van de Ven, M. Baas, L. van Dillen, D. Lakens, A.M. Lokhorst, & M. Strick (Eds.), Jaarboek Sociale Psychologie (pp. 65-69). Groningen, the Netherlands: ASPO press.
Kamans, E., van Zomeren, M., Gordijn, E., & Postmes, T. (2011). Wronged or harmed? Legitimizing intergroup violence by communicating power-congruent emotions. Paper presented at 13th Jena Workshop on Intergroup Processes, Jena, Germany.

2010

Nieuwenhuis, M., Postmes, T., & Bosveld, W. (2010). Afwijzing door Ingroep en Outgroep: De invloed van buurteffecten op identificatie en welbevinden. In B. Derks, R. J. Renes, K. Ruys, N. Van der Ven, & M. Vliek (Eds.), Jaarboek sociale psychologie (pp. 265-273). Groningen: ASPO press.
Koudenburg, N., Postmes, T., & Gordijn, E. H. (2010). Kiezers rekenen zich rijk met niet-stemmers als achterban. In B. Derks, R. J. Renes, K. Ruys, N. Van der Ven, & M. Vliek (Eds.), Jaarboek sociale psychologie Groningen: ASPO press.
Peters, K., Tevichapong, P., Haslam, S. A., & Postmes, T. (2010). Making the Organization Fly Organizational Identification and Citizenship in Full-Service and Low-Cost Airlines. Journal of Personnel Psychology, 9(3), 145-148. https://doi.org/10.1027/1866-5888/a000013
Crabtree, J. W., Haslam, S. A., Postmes, T., & Haslam, C. (2010). Mental Health Support Groups, Stigma, and Self-Esteem: Positive and Negative Implications of Group Identification. Journal of Social Issues, 66(3), 553-569.
Crabtree, J. W., Haslam, S. A., Postmes, T., & Haslam, C. (2010). Mental health support support groups, stigma and self-esteem: Positive and negative implications of group identification. Journal of Social Issues, 66(3), 553 - 569.
Thomas, E., Smith, L., McGarty, C., & Postmes, T. (2010). Nice and Nasty: The Formation of Prosocial and Hostile Social Movements. Revue Internationale De Psychologie Sociale-International Review of Social Psychology, 23(2-3), 17-55.
Postmes, T., & Branscombe, N. R. (2010). Rediscovering social identity. New York: Psychology Press.
Postmes, T., & Branscombe, N. R. (2010). Sources of social identity. In T. Postmes, & N. R. Branscombe (Eds.), Rediscovering social identity: Core sources. (pp. 1-12). New York: Psychology Press.
Rabinovich, A., Morton, T., & Postmes, T. (2010). Time perspective and attitude-behaviour consistency in future-oriented behaviours. British Journal of Social Psychology, 49(1), 69-89. https://doi.org/10.1348/014466608x401875
Tanghe, J. A. L., Van der Zee, K. I., & Postmes, T. (2010). Verkenning van effectieve interventies ter bevordering van de arbeidsintegratie. In S. Otten, K. van der Zee, & J. Tanghe (Eds.), Werkt diversiteit? Arbeidsintegratie en vertrouwen in een kleurrijke samenleving (pp. 71-87). Groningen: Instituut voor Integratie en Sociale Weerbaarheid (ISW).
Millward, L. J., & Postmes, T. (2010). Who We Are Affects How We Do: The Financial Benefits of Organizational Identification. British Journal of Management, 21(2), 327-339. https://doi.org/10.1111/j.1467-8551.2009.00667.x

2009

Haslam, S. A., Wegge, J., & Postmes, T. (2009). Are we on a learning curve or a treadmill? The benefits of participative group goal setting become apparent as tasks become increasingly challenging over time. European Journal of Social Psychology, 39(3), 430-446. https://doi.org/10.1002/ejsp.546
Postmes, T., Steg, L., & Keizer, K. (2009). Groepsnormen en gedrag: Sturing door sociale identiteit en dialoog. In W. L. Tiemeijer, & C. A. Thoma (Eds.), De menselijke beslisser: Over de psychologie van keuze en gedrag (pp. 139-162). (WRR verkenningen; Vol. 22). Amsterdam: Amsterdam University Press.
Smith, L. G. E., & Postmes, T. (2009). Intra-group interaction and the development of norms which promote inter-group hostility. European Journal of Social Psychology, 39(1), 130-144. https://doi.org/10.1002/ejsp.464
Smith, L. G. E., & Postmes, T. (2009). Obstructed ingroup advancement and the development of norms which reverse the positive-negative asymmetry effect. European Journal of Social Psychology, 39, 130 - 144.
Morton, T. A., Hornsey, J. M., & Postmes, T. (2009). Shifting ground: The variable use of essentialism in contexts of inclusion and exclusion. British Journal of Social Psychology, 48(1), 35-59. https://doi.org/10.1348/014466607X270287
Haslam, S. A., Jetten, J., Postmes, T., & Haslam, C. (2009). Social Identity, Health and Well-Being: An Emerging Agenda for Applied Psychology. Applied Psychology-An International Review-Psychologie appliquee-Revue internationale, 58(1), 1-23. https://doi.org/10.1111/j.1464-0597.2008.00379.x
Iyer, A., Jetten, J., Tsivrikos, D., Postmes, T., & Haslam, S. A. (2009). The more (and the more compatible) the merrier: Multiple group memberships and identity compatibility as predictors of adjustment after life transitions. British Journal of Social Psychology, 48(4), 707-733. https://doi.org/10.1348/014466608X397628
Fischer, P., Greitemeyer, T., Morton, T., Kastenmueller, A., Postmes, T., Frey, D., ... Odenwälder, J. (2009). The Racing-Game Effect: Why Do Video Racing Games Increase Risk-Taking Inclinations? Personality and social psychology bulletin, 35(10), 1395-1409. https://doi.org/10.1177/0146167209339628
Morton, T., Postmes, T., Haslam, S. A., & Hornsey, M. (2009). Theorizing Gender in the Face of Social Change: Is There Anything Essential About Essentialism? Journal of personality and social psychology, 96(3), 653-664. https://doi.org/10.1037/a0012966
Rabinovich, A., Morton, T., Postmes, T., & Verplanken, B. (2009). Think global, act local: The effect of goal and mindset specificity on willingness to donate to an environmental organization. Journal of Environmental Psychology, 29(4), 391-399. https://doi.org/10.1016/j.jenvp.2009.09.004
Postmes, T. (2009). Vooral verwarring door grote aandacht voor griep. Diverse kranten van de Stentor, A04 (4).
Morton, T. A., & Postmes, T. (2009). When Differences Become Essential: Minority Essentialism in Response to Majority Treatment. Personality and social psychology bulletin, 35(5), 656-668. https://doi.org/10.1177/0146167208331254
Baray, G., Postmes, T., & Jetten, J. (2009). When 'I' equals 'we': Exploring the relation between social and personal identity of extreme right-wing political party members. British Journal of Social Psychology, 48(4), 625-647. https://doi.org/10.1348/014466608x389582
Postmes, T., & Smith, L. G. E. (2009). Why Do the Privileged Resort to Oppression ? A Look at Some Intragroup Factors. Journal of Social Issues, 65(4), 769-790.
Postmes, T., & Smith, L. G. E. (2009). Why do the privileged resort to oppression? A look at some intra-group factors. Journal of Social Issues, 65, 769 - 790. https://doi.org/10.1111/j.1540-4560.2009.01624.x

2008

Adarves-Yorno, I., Haslam, S. A., & Postmes, T. (2008). And now for something completely different? The impact of group membership on perceptions of creativity. Social Influence, 3(4), 248-266. https://doi.org/10.1080/15534510802341124
Tanis, M., & Postmes, T. (2008). Cues to identity in online dyads: Effects of interpersonal versus intragroup perceptions on performance. Group Dynamics-Theory Research and Practice, 12(2), 96-111. https://doi.org/10.1037/1089-2699.12.2.96
Swaab, R., Postmes, T., & Spears, R. (2008). Identity formation in multiparty negotiations. British Journal of Social Psychology, 47, 167-187. https://doi.org/10.1348/014466607X216124
Van Zomeren, M., Postmes, T., & Spears, R. (2008). Toward an integrative social identity model of collective action: A quantitative research synthesis of three socio-psychological perspectives. Psychological Bulletin, 134(4), 504-535. https://doi.org/10.1037/0033-2909.134.4.504

2007

Spears, R., Lea, M., & Postmes, T. (2007). CMC and social identity. In A. N. Joinson, K. Y. A. McKenna, T. Postmes, & U. D. Reips (Eds.), Oxford handbook of internet psychology. (pp. 253-272). Oxford: Oxford University Press.
Adarves-Yorno, I., Postmes, T., & Haslam, S. A. (2007). Creative innovation or crazy irrelevance? The contribution of group norms and social identity to creative behavior. Journal of Experimental Social Psychology, 43(3), 410-416. https://doi.org/10.1016/j.jesp.2006.02.013
Newson, L., Postmes, T., Lea, S. E. G., Webley, P., Richerson, P. J., & McElreath, R. (2007). Influences on communication about reproduction: The cultural evolution of low fertility. Evolution and Human Behavior, 28(3), 199-210. https://doi.org/10.1016/j.evolhumbehav.2007.01.003
Joinson, A. N., McKenna, K. Y. A., Postmes, T., & Reips, U. D. (2007). Introduction to the handbook. In A. N. Joinson, K. Y. A. McKenna, T. Postmes, & U. D. Reips (Eds.), Oxford handbook of internet psychology. (pp. 1-7). Oxford: Oxford University Press.
Joinson, A. N., McKenna, K. Y. A., Postmes, T., & Reips, U. D. (2007). Oxford handbook of internet psychology. Oxford: Oxford University Press.
Morton, T. A., Postmes, T., & Jetten, J. (2007). Playing the game: When group success is more important than downgrading deviants. European Journal of Social Psychology, 37(4), 599-616. https://doi.org/10.1002/ejsp.385
Millward, L. J., Haslam, S. A., & Postmes, T. (2007). Putting employees in their place: The impact of hot-desking on organizational and team identification. Organization Science, 18(4), 547-559. https://doi.org/10.1287/orsc.1070.0265
Ryan, M. K., Haslam, S. A., & Postmes, T. (2007). Reactions to the glass cliff - Gender differences in the explanations for the precariousness of women's leadership positions. Journal of organizational change management, 20(2), 182-197. https://doi.org/10.1108/09534810710724748
Swaab, R., Postmes, T., Van Beest, I., & Spears, R. (2007). Shared cognition as a product of, and precursor to, shared identity in negotiations. Personality and social psychology bulletin, 33(2), 187-199. https://doi.org/10.1177/0146167206294788
Postmes, T. (2007). The psychological dimensions of collective action, online. In A. N. Joinson, K. Y. A. McKenna, T. Postmes, & U. D. Reips (Eds.), Oxford handbook of internet psychology. (pp. 165-186). Oxford: Oxford University Press.
Tanis, M., & Postmes, T. (2007). Two faces of anonymity: Paradoxical effects of cues to identity in CMC. Computers in Human Behavior, 23(2), 955-970. https://doi.org/10.1016/j.chb.2005.08.004

2006

Adarves-Yorno, I., Postmes, T., & Haslam, S. A. (2006). Social identity and the recognition of creativity in groups. British Journal of Social Psychology, 45(3), 479-497. https://doi.org/10.1348/014466605X50184
Haslam, S. A., Ryan, M. K., Postmes, T., Spears, R., Jetten, J., & Webley, P. (2006). Sticking to our guns: social identity as a basis for the maintenance of commitment to faltering organizational projects. Journal of Organizational Behavior, 27(5), 607-628. https://doi.org/10.1002/job.370
Morton, T. A., Haslam, S. A., Postmes, T., & Ryan, M. K. (2006). We value what values us: The appeal of identity-affirming science. Political Psychology, 27(6), 823-838. https://doi.org/10.1111/j.1467-9221.2006.00539.x

2005

Postmes, T., Spears, R., Lee, AT., & Novak, RJ. (2005). Individuality and social influence in groups: Inductive and deductive routes to group identity. Journal of personality and social psychology, 89(5), 747-763. https://doi.org/10.1037/0022-3514.89.5.747

2004

Jetten, J., Spears, R., & Postmes, T. (2004). Intergroup distinctiveness and differentiation: A meta-analytic integration. Journal of personality and social psychology, 86(6), 862-879.

2002

Postmes, T., & Spears, R. (2002). Behavior online: Does anonymous computer communication reduce gender inequality? Personality and social psychology bulletin, 28(8), 1073-1083.
Spears, R., Lea, M., Corneliussen, RA., Postmes, T., & Ter Haar, W. (2002). Computer-mediated communication as a channel for social resistance: The strategic side of SIDE. Small Group Research, 33(5), 555-574. https://doi.org/10.1177/104649602237170
Postmes, T., Spears, R., & Lea, M. (2002). Intergroup differentiation in computer-mediated communication: Effects of depersonalization. Group Dynamics-Theory Research and Practice, 6(1), 3-16. https://doi.org/10.1037//1089-2699.6.1.3
Spears, R., Postmes, T., Lea, M., & Wolbert, A. (2002). When are net effects gross products? The power of influence and the influence of power in computer-mediated communication. Journal of Social Issues, 58(1), 91-107.

2001

Gordijn, E. H., Postmes, T., & De Vries, N. K. (2001). Devil's advocate or advocate of oneself: the effects of pro- and counter-attitudinal advocacy and numerical support on self persuasion. Personality and social psychology bulletin, 395 - 407.
Postmes, T., Spears, R., & Cihangir, S. (2001). Quality of decision making and group norms. Journal of personality and social psychology, 80(6), 918-930. https://doi.org/10.1037//0022-3514.80.6.918
Platow, MJ., Spears, R., & Postmes, T. (2001). Responding to unfair collective process and poor collective outcomes: Acceptance of low personal status, social mobility behaviour or social change? Australian Journal of Psychology, 53, 125.
Gordijn, E. H., De Vries, N. K., & Postmes, T. (2001). Self-persuasion: an alternative paradigm for investigating minority and majority influence. In N. K. de Vries (Ed.), Group Consensus: Implications for innovation (pp. 144 - 159). Oxford: Blackwell Publishing.
Spears, R., Postmes, T., Sakhel, K., & De Groot, D. (2001). Social influence in computer-mediated communication: The effects of anonymity on group behaviour. Australian Journal of Psychology, 53, 128.
Postmes, T., Spears, R., Sakhel, K., & de Groot, D. (2001). Social influence in computer-mediated communication: The effects of anonymity on group behavior. Personality and social psychology bulletin, 27(10), 1243-1254.

2000

Postmes, T., Spears, R., & Lea, M. (2000). The formation of group norms in computer-mediated communication. Human Communication Research, 26(3), 341-371.

1999

Postmes, T., Branscombe, NR., Spears, R., & Young, H. (1999). Comparative processes in personal and group judgments: Resolving the discrepancy. Journal of personality and social psychology, 76(2), 320-338.

1998

Postmes, T., Spears, R., & Lea, M. (1998). Breaching or building social boundaries? SIDE-effects of computer-mediated communication. Communication Research, 25(6), 689-715.
Postmes, T., & Spears, R. (1998). Deindividuation and antinormative behavior: A meta-analysis. Psychological Bulletin, 123(3), 238-259.
Dijksterhuis, A., Spears, R., Postmes, T., Stapel, DA., Koomen, W., van Knippenberg, A., & Scheepers, D. (1998). Seeing one thing and doing another: Contrast effects in automatic behavior. Journal of personality and social psychology, 75(4), 862-871.
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