Joinson, A. N., McKenna, K. Y. A., Postmes, T., & Reips, U.-D. (Eds.). (in press). Oxford handbook of Internet psychology. Oxford, UK: Oxford University Press.

Postmes, T., & Branscombe, N. R. (Eds.). (in preparation). Rediscovering social identity: Core sources. New York: Psychology Press.

Postmes, T., & Jetten, J. (Eds.). (2006). Individuality and the group: Advances in social identity. London: Sage.

Postmes, T., Lea, M., Spears, R., & Reicher, S. D. (Eds.). (2000). SIDE issues centre stage: Recent developments in studies of de-individuation in groups. Amsterdam: KNAW.

Adarves-Yorno, I., Postmes, T., & Haslam, S. A. (in press). Creative innovation or crazy irrelevance? The contribution of group norms and social identity to creative behavior. Journal of Experimental Social Psychology.

Millward, L. J., Haslam, S. A., & Postmes, T. (in press). Putting employees in their place: The impact of hot-desking on organizational and team identification. Organization Science.

Morton, T. A., Postmes, T., & Jetten, J. (in press). Playing the game: When group success is more important than downgrading deviants. European Journal of Social Psychology.

Ryan, M. K., Haslam, S. A., & Postmes, T. (in press). Reactions to the glass cliff: Gender differences in the explanations for the precariousness of womenÕs leadership positions. Journal of Organizational Change Management .

Swaab, R. I., Postmes, T., Spears, R., & Van Beest, I. (in press). Shared cognition as a product of, and precursor to, shared identity in negotiations. Personality and Social Psychology Bulletin.

Newson, L., Postmes, T., Lea, S. E. G., Webley, P., Richerson, P. J., & McElreath, R. (in preparation). Influences on communication about reproduction: The cultural evolution of low fertility. Evolution and Human Behavior.

Tanis, M., & Postmes, T. (2007). Two faces of anonymity: Paradoxical effects of cues to identity in CMC. Computers in Human Behavior, 23, 955-970.

Adarves-Yorno, I., Postmes, T., & Haslam, S. A. (2006). Social identity and the recognition of creativity in groups. British Journal of Social Psychology, 45, 479-497.

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, 607-628.

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, 823-828.

Newson, L., & Postmes, T. (2005). Less restricted mating, low contact with kin and the role of culture. Behavioral and Brain Sciences, 28, 291.

Newson, L., & Postmes, T. (2005). Why are modern families small? Toward an evolutionary and cultural explanation of the demographic transition. Personality and Social Psychology Review, 9, 360-375.

Postmes, T., Haslam, S. A., & Swaab, R. (2005). Social influence in small groups: An interactive model of social identity formation. European Review of Social Psychology, 16, 1-42.

Postmes, T., Spears, R., Lee, T., & Novak, R. (2005). Individuality and social influence in groups: Inductive and deductive routes to group identity. Journal of Personality and Social Psychology, 89, 747-763.

Tanis, M., & Postmes, T. (2005). A social identity approach to trust: Interpersonal perception, group membership and trusting behavior. European Journal of Social Psychology, 35, 413-424.

Haslam, S. A., Postmes, T., & Jetten, J. (2004). Beyond balance: To understand 'bias', social psychology needs to address issues of politics, power and social perspective. Behavioral and Brain Sciences, 27, 241-242.

Jetten, J., Spears, R., & Postmes, T. (2004). Intergroup distinctiveness and differentiation: A meta-analytic integration. Journal of Personality and Social Psychology, 86, 862-879.

O'Brien, A. T., Haslam, S. A., Jetten, J., Humphrey, L., O'Sullivan, L., Postmes, T., Eggins, R. A., & Reynolds, K. J. (2004). Cynicism and disengagement among devalued employee groups: The need to ASPIRe. Career Development International, 9, 28-44.

Swaab, R. I., Postmes, T., & Neijens, P. (2004). Communication and information as antecedents of negotiation support. International Negotiation, 9, 59-78.

Haslam, S. A., Postmes, T., & Ellemers, N. (2003). More than a metaphor: Organizational identity makes organizational life possible. British Journal of Management, 14, 357-369.

Sassenberg, K., Boos, M., Postmes, T., & Reips, U.-D. (2003). Studying the internet: A challenge for modern psychology. Swiss Journal of Psychology, 62, 3-5.

Schmitt, M. T., Branscombe, N. R., & Postmes, T. (2003). Women's emotional responses to the pervasiveness of gender discrimination. European Journal of Social Psychology, 33, 297-312.

Tanis, M., & Postmes, T. (2003). Social cues and impression formation in CMC. Journal of Communication, 53, 676-693.

Brunsting, S., & Postmes, T. (2002). Social movement participation in the digital age - Predicting offline and online collective action. Small Group Research, 33, 525-554.

Jetten, J., Postmes, T., & McAuliffe, B. J. (2002). 'We're all individuals': Group norms of individualism and collectivism, levels of identification, and identity threat. European Journal of Social Psychology, 32, 189-207.

Lea, M., Rogers, P., & Postmes, T. (2002). SIDE-VIEW: Evaluation of a system to develop team players and improve productivity in Internet collaborative learning groups. British Journal of Educational Technology, 33, 54-64.

Postmes, T., & Branscombe, N. R. (2002). Influence of long-term racial environmental composition on subjective well-being in African Americans. Journal of Personality and Social Psychology, 83, 735-751.

Postmes, T., & Brunsting, S. (2002). Collective action in the age of internet: Mass communication and online mobilization. Social Science Computer Review, 20, 290-301.

Postmes, T., & Spears, R. (2002). Contextual moderators of gender differences and stereotyping in computer-mediated group discussions. Personality and Social Psychology Bulletin, 28, 1073-1083.

Postmes, T., Spears, R., & Lea, M. (2002). Intergroup differentiation in computer-mediated communication: Effects of depersonalization. Group Dynamics, 6, 3-16.

Sassenberg, K., & Postmes, T. (2002). Cognitive and strategic processes in small groups: Effects of anonymity of the self and anonymity of the group on social influence. British Journal of Social Psychology, 41, 463-480.

Spears, R., Lea, M., Corneliussen, R. A., Postmes, T., & Ter Haar, W. (2002). Computer-mediated communication as a channel for social resistance - The strategic side of SIDE. Small Group Research, 33, 555-574.

Spears, R., Postmes, T., Lea, M., & Wolbert, A. (2002). The power of influence and the influence of power in virtual groups: A SIDE look at CMC and the Internet. The Journal of Social Issues. Special Issue: Social impact of the Internet, 58, 91-108.

Swaab, R. I., Postmes, T., Neijens, P., Kiers, M. H., & Dumay, A. C. M. (2002). Multiparty negotiation support: The role of visualization's influence on the development of shared mental models. Journal of Management Information Systems, 19, 129-150.

Gordijn, E., Postmes, T., & de Vries, N. K. (2001). Devil's advocate or advocate of oneself: Effects of numerical support on pro- and counterattitudinal self-persuasion. Personality and Social Psychology Bulletin, 27, 395-407.

Jetten, J., Postmes, T., & McAuliffe, B. J. (2001). 'We're all individuals': Group norms of individualism and collectivism, levels of identification, and identity threat [Abstract]. Australian Journal Of Psychology, 53, 117-118.

Platow, M. J., 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? [Abstract]. Australian Journal Of Psychology, 53, 125-125.

Postmes, T., Spears, R., & Cihangir, S. (2001). Quality of decision making and group norms. Journal of Personality and Social Psychology, 80, 918-930.

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, 1242-1254.

Postmes, T., Tanis, M., & DeWit, B. (2001). Communication and commitment in organizations: A social identity approach. Group Processes and Intergroup Relations, 4, 227-246.

Spears, R., Postmes, T., Sakhel, K., & De Groot, D. (2001). Social influence in computer-mediated communication: The effects of anonymity on group behaviour [Abstract]. Australian Journal Of Psychology, 53, 128-128.

Postmes, T., & Lea, M. (2000). Social processes and group decision making: Anonymity in group decision support systems. Ergonomics, 43, 1252-1274.

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

Tanis, M., & Postmes, T. (2000). Effecten van individuatie in CMC [Effects of individuation in CMC]. Tijdschrift voor Communicatiewetenschap, 28, 396-408.

Lea, M., Postmes, T., & Rogers, P. (1999). SIDE-VIEW: An interactive web environment to support group collaborative learning. Educational Technology and Society, 2, 1-4.

Postmes, T., Branscombe, N. R., Spears, R., & Young, H. (1999). Personal and group judgments of discrimination and privilege: Resolving the discrepancy. Journal of Personality and Social Psychology, 76, 320-338.

Dijksterhuis, A., Spears, R., Postmes, T., Stapel, D. A., 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, 862-871.

Postmes, T., & Spears, R. (1998). Deindividuation and anti-normative behavior: A meta-analysis. Psychological Bulletin, 123, 238-259.

Postmes, T., Spears, R., & Lea, M. (1998). Breaching or building social boundaries? SIDE-effects of computer-mediated communication. Communication Research, 25, 689-715.

Postmes, T. (in press). 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. Oxford, UK: Oxford University Press.

Postmes, T. (in press). Deindividuation. In R. F. Baumeister & K. D. Vohs (Eds.), Encyclopedia of Social Psychology. London: Sage.

Spears, R., Lea, M., & Postmes, T. (in press). Social identity in CMC. In A. N. Joinson, K. Y. A. McKenna, T. Postmes & U.-D. Reips (Eds.), Oxford handbook of Internet psychology. Oxford, UK: Oxford University Press.

Dumont, M., Seron, E., Yzerbyt, V., & Postmes, T. (2006). Social comparison and the personal-group discrimination discrepancy. In S. Guimond (Ed.), Social comparison and social psychology (pp. 228-246). Cambridge: Cambridge University Press.

Jetten, J., & Postmes, T. (2006). "I did it my way": Collective expressions of individualism. In T. Postmes & J. Jetten (Eds.), Individuality and the group: Advances in social identity (pp. 116-136). London: Sage.

Jetten, J., & Postmes, T. (2006). The puzzle of individuality and the group. In T. Postmes & J. Jetten (Eds.), Individuality and the group: Advances in social identity (pp. 1-10). London: Sage.

Postmes, T., & Jetten, J. (2006). Reconciling individuality and the group. In T. Postmes & J. Jetten (Eds.), Individuality and the group: Advances in social identity (pp. 258-269). London: Sage.

Postmes, T., Baray, G., Haslam, S. A., Morton, T., & Swaab, R. (2006). The dynamics of personal and social identity formation. In T. Postmes & J. Jetten (Eds.), Individuality and the group: Advances in social identity (pp. 215-236). London: Sage.

Postmes, T., & Baym, N. (2005). Intergroup dimensions of Internet. In J. Harwood & H. Giles (Eds.), Intergroup communication: Multiple perspectives (pp. 213-238). New York: Peter Lang Publishers.

Spears, R., Scheepers, D., Jetten, J., Doosje, B., Ellemers, N., & Postmes, T. (2004). Group homogeneity, entitativity and social identity: Dealing with/in social structure. In V. Yzerbyt, C. M. Judd & O. Corneille (Eds.), The psychology of group perception: Contributions to the study of homogeneity, entitativity and essentialism (pp. 293-316). New York: Psychology Press.

Postmes, T. (2003). A social identity approach to communication in organizations. In S. A. Haslam, D. van Knippenberg, M. J. Platow & N. Ellemers (Eds.), Social identity at work: Developing theory for organizational practice (pp. 81-98). Philadelphia, PA: Psychology Press.

Swaab, R. I., Postmes, T., Van Beest, I., & Neijens, P. (2003). Gedeelde cognitie in groepen: De herkenning van gemeenschappelijkheid [Shared cognition in groups: The recognition of commonality]. In E. Van Dijk, E. Kluwer & D. Wigboldus (Eds.), Jaarboek Sociale Psychologie (Vol. 2nd, pp. 297-304). Delft: Eburon.

Tanis, M., & Postmes, T. (2003). Effecten van persoonlijke cues en groepslidmaatschap op de ontwikkeling van vertrouwen [Effects of personal cues and group membership on the development of trust]. In E. Van Dijk, E. Kluwer & D. Wigboldus (Eds.), Jaarboek Sociale Psychologie (pp. 305-312). Delft: Eburon.

Gordijn, E., de Vries, N. K., & Postmes, T. (2001). Self-persuasion: An alternative paradigm for investigating minority and majority influence. In C. K. W. De Dreu & N. K. De Vries (Eds.), Group innovation: Fundamental and applied perspectives (pp. 144-159). Oxford, England: Blackwell.

Postmes, T. (2001). Deindividuation, psychology of. In P. H. Baltus & N. H. Smelser (Eds.), The International Encyclopedia of the Social and Behavioral Sciences (Vol. 5, pp. 3364-3366). Oxford, England: Pergamom.

Postmes, T. (2001). Het ontstaan van sociale normen in elektronische groepen [The emergence of social norms in electronic groups]. In E. Kerstel & H. Veenhof (Eds.), Over de grenzen van het weten. Jaarboek 2000, Vereniging van akademie-onderzoekers (pp. 67-72). Amsterdam: KNAW.

Spears, R., Lea, M., & Postmes, T. (2001). Social psychological theories of computer-mediated communication: Social gain or social pain? In H. Giles & P. Robinson (Eds.), New Handbook of Language and Social Psychology (2nd ed., pp. 601-624). Chichester, England: Wiley.

Spears, R., Postmes, T., & Lea, M. (2001). A SIDE view of social influence. In J. P. Forgas & K. D. Williams (Eds.), Social influence: Direct and indirect processes (pp. 331-350). Philadephia: Psychology Press.

Spears, R., Postmes, T., Wolbert, A., Lea, M., & Rogers, P. (2001). Sociaal-psychologische effecten van ICT's en hun beleidsimplicaties [Social-psychological effects of ICTs and their policy implications]. In R. Van der Ploeg & C. Veenemans (Eds.), De invloed van ICT op maatschappij en overheid (pp. 3-84). Amsterdam, the Netherlands: Amsterdam University Press.

Branscombe, N., & Postmes, T. (2000). Effects of identifiability in the long run: The impact of desegregation on identity salience and well-being. In T. Postmes, R. Spears, M. Lea & S. Reicher (Eds.), SIDE effects centre stage: Recent developments in studies of de-individuation in groups (pp. 151-162). Amsterdam, the Netherlands: KNAW.

Lea, M., Rogers, P., Postmes, T., & Schouten, A. (2000). SIDE-VIEW: A design to develop team players and improve productivity in Internet collaborative learning groups. In F. Naghdy, F. Kurfess, H. Ogata, E. Szczerbicki, H. Bothe & H. Tlanfield (Eds.), Proceedings of the ICSC Congress on Intelligent Systems & Applications (ISA2000) (pp. 792-798). Westaskiwin, CA: ICSC Academic Press.

Postmes, T., & Spears, R. (2000). Refining the cognitive redefinition of the group: Deindividuation effects in common bond vs. common identity groups. In T. Postmes, R. Spears, M. Lea & S. Reicher (Eds.), SIDE effects centre stage: Recent developments in studies of de-individuation in groups (pp. 63-78). Amsterdam, the Netherlands: KNAW.

Spears, R., Lea, M., & Postmes, T. (2000). On side: Purview, problems and prospects. In T. Postmes, R. Spears, M. Lea & S. Reicher (Eds.), SIDE effects centre stage: Recent developments in studies of de-individuation in groups (pp. 1-16). Amsterdam, the Netherlands: KNAW.

Postmes, T., Spears, R., & Lea, M. (1999). Social identity, group norms, and "deindividuation": Lessons from computer-mediated communication for social influence in the group. In N. Ellemers, R. Spears & B. Doosje (Eds.), Social identity: Context, commitment, content (pp. 164-183). Oxford, England: Blackwell.

Brouwer, J., Kawakami, J., Rojahn, K., & Postmes, T. (1997). De effecten van de (on)zichtbaarheid van sekse op zelf-stereotypering [The effects of gender (in)visibility on self-stereotyping]. In C. K. W. De Dreu, N. K. de Vries, D. Van Knippenberg & C. Rutte (Eds.), Fundamentele Sociale Psychologie (Vol. 11, pp. 150-157). Tilburg: Tilburg University Press.

Gordijn, E., Postmes, T., & De Vries, N. K. (1997). Zelfoverreding door pro- en counterattitudinale argumentatie en numerieke steun [Self-persuasion through pro- and counterattitudinal argumentation and numeric support]. In C. K. W. De Dreu, N. K. de Vries, D. Van Knippenberg & C. Rutte (Eds.), Fundamentele Sociale Psychologie (Vol. 11, pp. 107-121). Tilburg: Tilburg University Press.

Sakhel, K., De Groot, D., Postmes, T., & Spears, R. (1997). Sociale beinvloeding in computer-gemedieerde groepen: Het effect van anonimiteit op sociale keuzes en gedrag [Social influence in computer-mediated groups: Effects of anonymity on social choices and behaviour]. In C. K. W. De Dreu, N. K. de Vries, D. Van Knippenberg & C. Rutte (Eds.), Fundamentele Sociale Psychologie (Vol. 11, pp. 81-94). Tilburg: Tilburg University Press.

Reicher, S., Spears, R., & Postmes, T. (1995). A social identity model of deindividuation phenomena. In W. Stroebe & M. Hewstone (Eds.), European Review of Social Psychology (Vol. 6, pp. 161-198). Chichester: Wiley.

Postmes, T., & Spears, R. (1993). A meta-analysis of deindividuation research: how 'anti' is antinormative behaviour? In L. Amacio & A. Caetano (Eds.), Social psychology in Europe (Vol. 10, pp. 61-62). Lisbon: Cosmos.

Spears, R., Postmes, T., Wolbert, A., Lea, M., & Rogers, P. (2000). Social psychological influence of ICT's on society and their policy implications (Scientific survey). Amsterdam, the Netherlands: Infodrome. Available online: http://www.infodrome.nl/publicaties/domeinen/03_spears.html.

Van Zomeren, M., Postmes, T., & Spears, R. (2006). Collective action: A meta-analysis. University of Amsterdam.

Baray, G., Postmes, T., & Jetten, J. (2005). When ÒIÓ Equals ÒWeÓ: Exploring the Relation between Social and Personal Identity in Extremist Groups. Manuscript Submitted for Publication.

Morton, T., & Postmes, T. (2005). Communication and social identity. Unpublished Manuscript, University of Exeter.

Swaab, R. I., Eggins, R. A., & Postmes, T. (2005). Subgroup and superordinate caucusing in Intergroup negotiations. Manuscript submitted for publication.