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Chair Lammers Group

Dr. Joris Lammers

Phone +49-221-470-6126
Fax +49-221-470-1216

E-mailjoris.lammers(at)uni-koeln.de
AddressRichard-Strauss-Str. 2, 50931 Köln | Germany

Room 2.A08
Office hours by appointment

Research interests

Social power • Moral psychology • Sexism and gender • Political psychology • Existential psychology

Key Publications

  • Baldwin, M., & Lammers, J. (2016). Past-focused environmental comparisons promote proenvironmental outcomes for conservatives. Proceedings of the National Academy of Sciences, 113, 14953–14957. doi:10.1073/pnas.1610834113
  • Inbar, Y., & Lammers, J. (2012). Political diversity in social and personality psychology. Perspectives on Psychological Science, 7, 496–503. doi:10.1177/1745691612448792
  • Lammers, J., Stoker, J. I., Jordan, J., & Pollmann, M. (2011). Power increases infidelity among men and women. Psychological Science, 22, 1191–1197. doi:10.1177/0956797611416252
  • Lammers, J., & Galinsky, A. D. (2010). Power increases hypocrisy: Moralizing in reasoning, immorality in behavior. Psychological Science, 21, 737–744. doi:10.1177/0956797610368810
  • Lammers, J., Galinsky, A. D., Gordijn, E. H., & Otten, S. (2008). Illegitimacy moderates the effects of power on approach. Psychological Science, 19, 558–564. doi:10.1111/j.1467-9280.2008.02123.x

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All Publications

  • Guinote, A., & Lammers, J. (in press). Accentuation of tending and befriending among the powerless. In M. Bukowski, I. Fritsche, A. Guinote, & M. Kofta (Eds.), Coping with lack of control in a social world (pp. 185–202). New York, NY: Routledge.
  • Lammers, J., Dubois, D., Rucker, D. D., & Galinsky, A. D. (in press). Ease of retrieval moderates the effects of power: Implications for the replicability of power recall effects. Social Cognition.
  • Lammers, J., & Gast, A. (in press). Stressing the advantages of female leadership can place women at a disadvantage. Social Psychology.
  • Lammers, J., Koch, A., Conway, P., & Brandt, M. J. (in press). The political domain appears simpler to the politically extreme than to political moderates. Social Psychological and Personality Science. doi:10.1177/1948550616678456
  • Lammers, J., & Burgmer, P. (2017). Power increases anchoring effects on judgment. Social Cognition, 35, 40–53. doi:10.1521/soco.2017.35.1.40
  • Baldwin, M., & Lammers, J. (2016). Past-focused environmental comparisons promote proenvironmental outcomes for conservatives. Proceedings of the National Academy of Sciences, 113, 14953–14957. doi:10.1073/pnas.1610834113
  • Lammers, J., & Imhoff, R. (2016). Power and sadomasochism: Understanding the antecedents of a knotty relationship. Social Psychological and Personality Science, 7, 142–148. doi:10.1177/1948550615604452
  • Lammers, J., & Maner, J. (2016). Power and attraction to the counternormative aspects of infidelity. The Journal of Sex Research, 53, 54–63. doi:10.1080/00224499.2014.989483
  • Lammers, J., Stoker, J. I., Rink, F., & Galinsky, A. D. (2016). To have control over or to be free from others? The desire for power reflects a need for autonomy. Personality and Social Psychology Bulletin, 42, 498–512. doi:10.1177/0146167216634064
  • De Waal-Andrews, W., Gregg, A. P., & Lammers, J. (2015). When status is grabbed and when status is granted: Getting ahead in dominance and prestige hierarchies. British Journal of Social Psychology, 54, 445–464. doi:10.1111/bjso.12093
  • Inbar, Y., & Lammers, J. (2015). Increasing ideological tolerance in social psychology [Peer commentary on “Political diversity will improve social psychological science” by J. L. Duarte et al.]. Behavioral and Brain Sciences, 38, e147. doi:10.1017/S0140525X1400123X
  • Lammers, J., Galinsky, A. D., Dubois, D., & Rucker, D. D. (2015). Power and morality. Current Opinion in Psychology, 6, 15–19. doi:10.1016/j.copsyc.2015.03.018
  • Meijs, M. H. J., Lammers, J., & Ratliff, K. A. (2015). Gender stereotype-inconsistent acts are seen as more acceptable than stereotype-consistent acts, if they are clever. Social Psychology, 46, 291–305. doi:10.1027/1864-9335/a000244
  • Inbar, Y., & Lammers, J. (2014). Political diversity in social psychology: Problems and solutions. In P. Valdesolo & J. Graham (Eds.), Bridging ideological divides, Claremont symposium on applied social psychology.
  • Lammers, J., & Van Beest, I. (2014). The effects of power on immorality. In J.-W. Van Prooijen & P. A. M. Van Lange (Eds.), Power, politics, and paranoia: Why people are suspicious of their leaders (pp. 17–32). Cambridge, UK: Cambridge University Press.
  • Çelik, P., Lammers, J., van Beest, I., Bekker, M. H. J., & Vonk, R. (2013). Not all rejections are alike: Competence and warmth as a fundamental distinction in social rejection. Journal of Experimental Social Psychology, 49, 635–642. doi:10.1016/j.jesp.2013.02.010
  • Çelik, P., van Beest, I., Lammers, J., & Bekker, M. (2013). Implicit threat vigilance among violent offenders diagnosed with antisocial personality disorder: The impact of ostracism and control threat. International Journal of Developmental Science, 7, 47–55.
  • Lammers, J., Dubois, D., Rucker, D. D., & Galinsky, A. D. (2013). Power gets the job: Priming power improves interview outcomes. Journal of Experimental Social Psychology, 49, 776–779. doi:10.1016/j.jesp.2013.02.008
  • Lammers, J., & Proulx, T. (2013). Writing autobiographical narratives increases political conservatism. Journal of Experimental Social Psychology, 49, 684–691. doi:10.1016/j.jesp.2013.03.008
  • Latu, I. M., Mast, M. S., Lammers, J., & Bombari, D. (2013). Successful female leaders empower women’s behavior in leadership tasks. Journal of Experimental Social Psychology, 49, 444–448. doi:10.1016/j.jesp.2013.01.003
  • Inbar, Y., & Lammers, J. (2012). Ideological diversity in social and personality psychology: questions and answers. SPSP Dialogue. doi:10.2139/ssrn.2167052
  • Inbar, Y., & Lammers, J. (2012). Political diversity in social and personality psychology. Perspectives on Psychological Science, 7, 496–503. doi:10.1177/1745691612448792
  • Johnson, C. S., & Lammers, J. (2012). The powerful disregard social comparison information. Journal of Experimental Social Psychology, 48, 329–334. doi:10.1016/j.jesp.2011.10.010
  • Lammers, J. (2012). Abstraction increases hypocrisy. Journal of Experimental Social Psychology, 48, 475–480. doi:10.1016/j.jesp.2011.07.006
  • Lammers, J., Galinsky, A. D., Gordijn, E. H., & Otten, S. (2012). Power increases social distance. Social Psychological and Personality Science, 3, 282–290. doi:10.1177/1948550611418679
  • Lammers, J., & Yang, H. (2012). Feelings of power lead people to take sides with other powerful parties. Revista de Psicología Social, 27, 337–346. doi:10.1174/021347412802845612
  • Stoker, J. I., Van der Velde, M., & Lammers, J. (2012). Factors relating to managerial stereotypes: The role of gender of the employee and the manager and management gender ratio. Journal of Business and Psychology, 27, 31–42. doi:10.1007/s10869-011-9210-0
  • Galinsky, A. D., Rus, D., & Lammers, J. (2011). Power: A central force governing psychological, social, and organizational life. In D. De Cremer, R. van Dick, & J. K. Murnighan (Eds.), Social psychology and organizations (pp. 17–38). New York, NY: Routledge/Taylor & Francis Group.
  • Lammers, J., & Gast, A. (2011). Power in the House. In T. V. Cascio & L. M. Martin (Eds.), House and psychology: Humanity is overrated. Hoboken, NJ: Wiley.
  • Lammers, J., & Stapel, D. A. (2011). Power increases dehumanization. Group Processes & Intergroup Relations, 14, 113–126. doi:10.1177/1368430210370042
  • Lammers, J., Stoker, J. I., Jordan, J., Pollmann, M., & Stapel, D. A. (2011). Power increases infidelity among men and women. Psychological Science, 22, 1191–1197. doi:10.1177/0956797611416252
  • Lammers, J., Stapel, D. A., & Galinsky, A. D. (2010). Power increases hypocrisy: Moralizing in reasoning, immorality in behavior. Psychological Science, 21, 737–744. doi:10.1177/0956797610368810
  • Lammers, J., Stoker, J. I., & Stapel, D. A. (2010). Power and behavioral approach orientation in existing power relations and the mediating effect of income. European Journal of Social Psychology, 40, 543–551. doi:10.1002/ejsp.702
  • Lammers, J., & Galinsky, A. D. (2009). The conceptualization of power and the nature of interdependency: The role of legitimacy and culture. In D. Tjosvold & B. Wisse (Eds.), Power and interdependence in organizations (pp. 67–82). Cambridge, UK: Cambridge University Press.
  • Lammers, J., Gordijn, E. H., & Otten, S. (2009). Iron ladies, men of steel: The effects of gender stereotyping on the perception of male and female candidates are moderated by prototypicality. European Journal of Social Psychology, 39, 186–195. doi:10.1002/ejsp.505
  • Lammers, J., & Stapel, D. A. (2009). How power influences moral thinking. Journal of Personality and Social Psychology, 97, 279–289. doi:10.1037/a0015437
  • Lammers, J., Stoker, J. I., & Stapel, D. A. (2009). Differentiating social and personal power: Opposite effects on stereotyping, but parallel effects on behavioral approach tendencies. Psychological Science, 20, 1543–1549. doi:10.1111/j.1467-9280.2009.02479.x
  • Lammers, J., Galinsky, A. D., Gordijn, E. H., & Otten, S. (2008). Illegitimacy moderates the effects of power on approach. Psychological Science, 19, 558–564. doi:10.1111/j.1467-9280.2008.02123.x
  • Lammers, J., Gordijn, E. H., & Otten, S. (2008). Looking through the eyes of the powerful. Journal of Experimental Social Psychology, 44, 1229–1238. doi:10.1016/j.jesp.2008.03.015

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Academic distinctions

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