Abstract
Ostracism, or social exclusion, is widespread and associated with a range of detrimental psychological and social outcomes. Ostracism is typically explained as instrumental punishment of free-riders or deviants. However, this instrumental account fails to explain many of the features of real-world ostracism, including its prevalence. Here we hypothesized that ostracism can emerge incidentally (non-instrumentally) when people choose partners in social interactions, and that this process is driven by simple learning mechanisms. We tested this hypothesis in four experiments (n = 456) with economic games in dynamic social networks. Contrary to the instrumental account of ostracism, we find that the targets of ostracism are not primarily free-riders. Instead, incidental initial variability in choosing partners for social interactions predicts later ostracism better than the instrumental account. Using computational modelling, we show that simple reinforcement learning mechanisms explain the incidental emergence of ostracism, and that they do so better than a formalization of the instrumental account. Finally, we leveraged these reinforcement learning mechanisms to experimentally reduce incidental ostracism. Our results demonstrate that ostracism is more incidental than previously assumed and can arise from basic forms of learning. They also show that the same mechanisms that result in incidental ostracism can help to reduce its emergence.
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References
Williams, K. D. Ostracism. Annu. Rev. Psychol. 58, 425–452 (2007).
Wesselmann, E. D. & Williams, K. D. Social life and social death: inclusion, ostracism, and rejection in groups. Group Process. Intergroup Relat. 20, 693–706 (2017).
Robinson, S. L., O’Reilly, J. & Wang, W. Invisible at work: an integrated model of workplace ostracism. J. Manage. 39, 203–231 (2013).
Williams, K. D. & Nida, S. A. Ostracism and public policy. Policy Insights Behav. Brain Sci. 1, 38–45 (2014).
Blackhart, G. C., Eckel, L. A. & Tice, D. M. Salivary cortisol in response to acute social rejection and acceptance by peers. Biol. Psychol. 75, 267–276 (2007).
Eisenberger, N. I., Lieberman, M. D. & Williams, K. D. Does rejection hurt? An FMRI study of social exclusion. Science 302, 290–292 (2003).
Wesselmann, E. D., Nairne, J. S. & Williams, K. D. An evolutionary social psychological approach to studying the effects of ostracism. J. Soc. Evol. Cult. Psychol. 6, 309–328 (2012).
Sasaki, T. & Uchida, S. The evolution of cooperation by social exclusion. Proc. R. Soc. B 280, 2012 (2012).
Kurzban, R. & Leary, M. R. Evolutionary origins of stigmatization: the functions of social exclusion. Psychol. Bull. 127, 187–208 (2001).
Gruter, M. & Masters, R. D. Ostracism as a social and biological phenomenon: an introduction. Ethol. Sociobiol. 7, 149–158 (1986).
Nakamaru, M. & Yokoyama, A. The effect of ostracism and optional participation on the evolution of cooperation in the voluntary public goods game. PLoS ONE 9, e108423 (2014).
Johnson, T. The strategic logic of costly punishment necessitates natural field experiments, and at least one such experiment exists. Behav. Brain Sci. 35, 31–32 (2012).
Bowles, S. & Gintis, H. The evolution of strong reciprocity: cooperation in heterogeneous populations. Theor. Popul. Biol. 65, 17–28 (2004).
Wesselmann, E. D., Wirth, J. H., Pryor, J. B., Reeder, G. D. & Williams, K. D. When do we ostracize? Soc. Psychol. Personal. Sci. 4, 108–115 (2013).
Guala, F. Reciprocity: weak or strong? What punishment experiments do (and do not) demonstrate. Behav. Brain Sci. 35, 1–15 (2012).
Boehm, C. et al. Egalitarian behavior and reverse dominance hierarchy [and Comments and Reply]. Curr. Anthropol. 34, 227–254 (1993).
Hirshleifer, D. & Rasmusen, E. Cooperation in a repeated prisoners’ dilemma with ostracism. J. Econ. Behav. Organ. 12, 87–106 (1989).
Feinberg, M., Willer, R. & Schultz, M. Gossip and ostracism promote cooperation in groups. Psychol. Sci. 25, 656–664 (2014).
Maier-Rigaud, F. P., Martinsson, P. & Staffiero, G. Ostracism and the provision of a public good: experimental evidence. J. Econ. Behav. Organ. 73, 387–395 (2010).
Cinyabuguma, M., Page, T. & Putterman, L. Cooperation under the threat of expulsion in a public goods experiment. J. Public Econ. 89, 1421–1435 (2005).
Davis, B. J. & Johnson, D. B. Water cooler ostracism: social exclusion as a punishment mechanism. East. Econ. J. 41, 126–151 (2015).
Hales, A. H., Kassner, M. P., Williams, K. D. & Graziano, W. G. Disagreeableness as a cause and consequence of ostracism. Pers. Soc. Psychol. Bull. 42, 782–797 (2016).
Kagel, J. & McGee, P. Personality and cooperation in finitely repeated prisoner’s dilemma games. Econ. Lett. 124, 274–277 (2014).
Wesselmann, E. D., Wirth, J. H., Pryor, J. B., Reeder, G. D. & Williams, K. D. The role of burden and deviation in ostracizing others. J. Soc. Psychol. 155, 483–496 (2015).
Wesselmann, E. D., Williams, K. D. & Wirth, J. H. Ostracizing group members who can (or cannot) control being burdensome. Hum. Ethol. Bull. 29, 82–103 (2014).
Wirth, J. H., Bernstein, M. J. & LeRoy, A. S. Atimia: a new paradigm for investigating how individuals feel when ostracizing others. J. Soc. Psychol. 155, 497–514 (2015).
Williams, K. D. Ostracism: the kiss of social death. Soc. Personal. Psychol. Compass 1, 236–247 (2007).
Nezlek, J. B., Wesselmann, E. D., Wheeler, L. & Williams, K. D. Ostracism in everyday life. Group Dyn. 16, 91–104 (2012).
Yang, J. & Treadway, D. C. A social influence interpretation of workplace ostracism and counterproductive work behavior. J. Bus. Ethics 148, 879–891 (2018).
Nezlek, J. B., Wesselmann, E. D., Wheeler, L. & Williams, K. D. Ostracism in everyday life: the effects of ostracism on those who ostracize. J. Soc. Psychol. 155, 432–451 (2015).
Holland, J. Emergence: From Chaos to Order (Addison-Wesley, Redwood City, CA, 1998).
Sommer, K. L., Williams, K. D., Ciarocco, N. J. & Baumeister, R. F. When silence speaks louder than words: explorations into the intrapsychic and interpersonal consequences of social ostracism. Basic Appl. Soc. Psych. 23, 225–243 (2001).
Rand, D. G., Arbesman, S. & Christakis, N. A. Dynamic social networks promote cooperation in experiments with humans. Proc. Natl Acad. Sci. USA 108, 19193–19198 (2011).
Shirado, H., Fu, F., Fowler, J. H. & Christakis, N. A. Quality versus quantity of social ties in experimental cooperative networks. Nat. Commun. 4, 2814 (2013).
Wang, J., Suri, S. & Watts, D. J. Cooperation and assortativity with dynamic partner updating. Proc. Natl Acad. Sci. USA 109, 14363–14368 (2012).
Barclay, P. Biological markets and the effects of partner choice on cooperation and friendship. Curr. Opin. Psychol. 7, 33–38 (2016).
Skyrms, B. & Pemantle, R. A dynamic model of social network formation. Proc. Natl Acad. Sci. USA 97, 9340–9346 (2000).
Page, S. E. Path dependence. Quart. J. Polit. Sci. 1, 87–115 (2006).
Zadro, L., Williams, K. D. & Richardson, R. How low can you go? Ostracism by a computer is sufficient to lower self-reported levels of belonging, control, self-esteem, and meaningful existence. J. Exp. Soc. Psychol. 40, 560–567 (2004).
Grimm, V. et al. Pattern-oriented modeling of agent-based complex systems: lessons from ecology. Science 310, 987–991 (2005).
Smith, E. R. & Conrey, F. R. Agent-based modeling: a new approach for theory building in social psychology. Pers. Soc. Psychol. Rev. 11, 87–104 (2007).
Rescorla, R. A. & Wagner, A. in Classical Conditioning II: Current Research and Theory (eds Black, A. H. & Prokasy, W. H.) 64–99 (Appleton-Century-Crofts, East Norwalk, CT, 1972).
Rubinstein, A. Finite automata play the repeated prisoner’s dilemma. J. Econ. Theory 39, 83–96 (1986).
Palminteri, S., Wyart, V. & Koechlin, E. The importance of falsification in computational cognitive modeling. Trends Cogn. Sci. 21, 425–433 (2017).
Steingroever, H., Wetzels, R. & Wagenmakers, E.-J. Absolute performance of reinforcement-learning models for the Iowa Gambling Task. Decision 1, 161–183 (2014).
Erev, I. & Roth, A. E. Predicting how people play games: reinforcement learning in experimental games with unique, mixed strategy equilibria. Am. Econ. Rev. 88, 848–881 (1998).
Lindström, B. & Olsson, A. Mechanisms of social avoidance learning can explain the emergence of adaptive and arbitrary behavioral traditions in humans. J. Exp. Psychol. Gen. 144, 688–703 (2015).
Zaki, J., Kallman, S., Wimmer, G. E., Ochsner, K. & Shohamy, D. Social cognition as reinforcement learning: feedback modulates emotion inference. J. Cogn. Neurosci. 28, 1270–1282 (2016).
Hartgerink, C. H. J., van Beest, I., Wicherts, J. M. & Williams, K. D. The ordinal effects of ostracism: a meta-analysis of 120 cyberball studies. PLoS ONE 10, e0127002 (2015).
Janssen, I., Craig, W. M., Boyce, W. F. & Pickett, W. Associations between overweight and obesity with bullying behaviors in school-aged children. Pediatrics 113, 1187–1194 (2004).
Knecht, A., Snijders, T. A. B., Baerveldt, C., Steglich, C. E. G. & Raub, W. Friendship and delinquency: selection and influence processes in early adolescence. Soc. Dev. 19, 494–514 (2010).
van Duijn, M. A. J., Zeggelink, E. P. H., Huisman, M., Stokman, F. N. & Wasseur, F. W. Evolution of sociology freshmen into a friendship network. J. Math. Sociol. 27, 153–191 (2003).
Van De Bunt, G. G., Van Duijn, M. A. J. & Snijders, T. A. B. Friendship networks through time: an actor-oriented dynamic statistical network model. Comput. Math. Organ. Theory 5, 167–192 (1999).
Acknowledgements
We thank C. Efferson for valuable suggestions regarding the design and implementation of experiment 1, and A. Olsson, P. Pärnamets and I. Selbing for comments on an earlier version of the manuscript. This research was supported by Swiss NSF grants PP00P1_150739, 00014_165884 and 100019_176016 to P.N.T. B.L. was supported by Forte (COFAS2: 2014-2785 FOIP). The funders had no role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript.
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B.L. and P.N.T. conceived the study and designed the experiments. B.L. collected the data, developed the models, analysed the data and implemented the models. B.L. and P.N.T. wrote the paper.
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Lindström, B., Tobler, P.N. Incidental ostracism emerges from simple learning mechanisms. Nat Hum Behav 2, 405–414 (2018). https://doi.org/10.1038/s41562-018-0355-y
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DOI: https://doi.org/10.1038/s41562-018-0355-y
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