Abstract
The purpose of this study was to investigate whether the ‘bystander effect’ known to occur in emergency situations is effective in bullying situations through examination of the individual experiences of 467 middle- and high-school students. While the bystander effect was not found to be valid in bullying situations, there were significant differences in factors influencing a bystander’s defending behavior in terms of the presence of other bystanders. In cases where bullying was witnessed in the presence of other bystanders, factors such as one’s previous experience as a perpetrator, anti-social behavior, level of harm, relationship to the victim and popularity had an effect on the defending behavior of bystanders. On the other hand, in the absence of other bystanders, one’s previous experience as a victim, level of empathy, and perceived control had an effect on the defending behavior of bystanders. The implications of these results for an effective intervention for school bullying in terms of bystanders are discussed.
| Ahn, H., Chin, Y. (2014) Bystander’s role in the con of bullying research trends and task. The Journal of Yeolin Education 22(4): 95–117. Google Scholar | |
| Almeida, A., Correia, I., Marinho, S. (2009) Moral disengagement, normative beliefs of peer group, and attitudes regarding roles in bullying. Journal of School Violence 9(1): 23–36. doi: 10.1080/15388220903185639. Google Scholar | Crossref | |
| Bandura, A., Barbaranelli, C., Caprara, G. V., Pastorelli, C. (1996) Mechanisms of moral disengagement in the exercise of moral agency. Journal of Personality and Social Psychology 71(2): 364–374. doi: 10.1037//0022-3514.71.2.364. Google Scholar | Crossref | ISI | |
| Barchia, K., Bussey, K. (2011) Predictors of student defenders of peer aggression victims: Empathy and social cognitive factors. International Journal of Behavioral Development 35(4): 289–297. doi:10.1177/0165025410396746. Google Scholar | SAGE Journals | ISI | |
| Barhight, L. R., Hubbard, J. A., Grassetti, S. N., Morrow, M. T. (2015) Relations between actual group norms, perceived peer behavior, and bystander children’s intervention to bullying. Journal of Clinical Child and Adolescent Psychology (ahead-of-print). 1–7. doi:10.1080/15374416.2015.1046180. Google Scholar | Crossref | ISI | |
| Berndt, T. J. (1979) Developmental changes in conformity to peers and parents. Developmental Psychology 15: 608–616. doi:10.1037//0012-1649.15.6.608. Google Scholar | Crossref | ISI | |
| Berry, W. D. (1993) Understanding regression assumptions Vol. 92, Newburry Park, CA: Sage.doi: 10.4135/9781412986427. Google Scholar | Crossref | |
| Brewster, M., Tucker, J. M. (2015) Understanding bystander behavior: The influence of and interaction between bystander characteristics and situational factors. Victims and Offenders (ahead-of-print). 1–27. doi: 10.1080/15564886.2015.1009593. Google Scholar | |
| Bryant, B. K. (1982) An index of empathy for children and adolescents. Child Development. 413–425. doi: 10.1111/j.1467-8624.1982.tb01331.x. Google Scholar | Crossref | ISI | |
| Byers, D. (2013) ‘Do they see nothing wrong with this?’: Bullying, bystander complicity, and the role of homophobic bias in the Tyler Clementi case. Families in Society: The Journal of Contemporary Social Services 94(4): 251–258. doi: 10.1606/1044-3894.4325. Google Scholar | SAGE Journals | ISI | |
| Cappadocia, M. C., Pepler, D., Cummings, J. G., Craig, W. (2012) Individual motivations and characteristics associated with bystander intervention during bullying episodes among children and youth. Canadian Journal of School Psychology 27(3): 201–216. doi: 10.1177/0829573512450567. Google Scholar | SAGE Journals | |
| Caravita, S., Di Blasio, P., Salmivalli, C. (2009) Unique and interactive effects of empathy and social status on involvement in bullying. Social Development 18(1): 140–163. doi: 10.1111/j.1467-9507.2008.00465.x. Google Scholar | Crossref | ISI | |
| Carney, J. V., Hazler, R. J., Oh, I., Hibel, L. C., Granger, D. A. (2010) The relations between bullying exposures in middle childhood, anxiety, and adrenocortical activity. The Journal of School Violence 9: 1–18. doi: 10.1080/15388220903479602. Google Scholar | Crossref | |
| Carney, J. V., Jacob, C. J., Hazler, R. J. (2011) Exposure to school bullying and the social capital of sixth-grade students. The Journal of Humanistic Counseling 50(2): 238–254. doi: 10.1002/j.2161-1939.2011.tb00122.x. Google Scholar | Crossref | |
| Chaux, E. (2005) Role of third parties in conflicts among Colombian children and early adolescents. Aggressive Behavior 31: 40–55. doi: 10.1002/ab.20031. Google Scholar | Crossref | ISI | |
| Chekroun, P., Brauer, M. (2002) The bystander effect and social control behavior: The effect of the presence of others on people’s reactions to norm violations. European Journal of Social Psychology 32(6): 853–867. doi: 10.1002/ejsp.126. Google Scholar | Crossref | ISI | |
| Cho, Y., Chung, O. (2009) A mediated moderation model of conformative peer bullying in adolescents––focusing on the influence of peer conformity. The Korean Journal of the Human Development 16(3): 91–111. Google Scholar | |
| Choi, S., Cho, Y. I. (2013) Influence of psychological and social factors on bystanders’ roles in school bullying among Korean-American students in the United States. School Psychology International 34(1): 67–81. doi: 10.1177/0143034311430406. Google Scholar | SAGE Journals | ISI | |
| Clark, R. D., Word, L. E. (1974) Where is the apathetic bystander? Situational characteristics of the emergency. Journal of Personality and Social Psychology 29(3): 279–287. doi: 10.1037/h0036000. Google Scholar | Crossref | ISI | |
| Darley, J. M., Latané, B. (1968) Bystander intervention in emergencies: Diffusion of responsibility. Journal of Personality and Social Psychology 8(4): 377–383. doi: 10.1037/h0025589. Google Scholar | Crossref | Medline | ISI | |
| Davis, M. H. (1980) A multidimensional approach to individual differences in empathy. JSAS Catalog of Selected Documents in Psychology 10: 85. Google Scholar | |
| Deutsch, F. M., Lamberti, D. M. (1986) Does social approval increase helping? Personality and Social Psychology Bulletin 12: 149–157. doi:10.1177/0146167286122001. Google Scholar | SAGE Journals | ISI | |
| Dovidio, J. F., Piliavin, J. A., Gaertner, S. L., Schroeder, D. A., Clark, R. D. (1991) The arousal: Cost-reward model and the process of intervention: A review of the evidence, Thousand Oaks, CA: Sage. Google Scholar | |
| Fischer, P., Greitemeyer, T., Pollozek, F., Frey, D. (2006) The unresponsive bystander: Are bystanders more responsive in dangerous emergencies? European Journal of Social Psychology 36(2): 267–278. doi:10.1002/ejsp.297. Google Scholar | Crossref | ISI | |
| Fischer, P., Krueger, J. I., Greitemeyer, T., Vogrincic, C., Kastenmüller, A., Frey, D., Kainbacher, M. (2011) The bystander-effect: A meta-analytic review on bystander intervention in dangerous and non-dangerous emergencies. Psychological Bulletin 137(4): 517–537. doi: 10.1037/a0023304. Google Scholar | Crossref | Medline | ISI | |
| Forsberg, C., Thornberg, R., Samuelsson, M. (2014) Bystanders to bullying: Fourth-to seventh-grade students’ perspectives on their reactions. Research Papers in Education 29(5): 557–576. doi: 10.1080/02671522.2013.878375. Google Scholar | Crossref | ISI | |
| Gini, G. (2006) Social cognition and moral cognition in bullying: What’s wrong? Aggressive Behavior 32(6): 528–539. doi: 10.1002/ab.20153. Google Scholar | Crossref | ISI | |
| Gini, G., Albiero, P., Benelli, B., Altoe, G. (2008) Determinants of adolescents’ active defending and passive bystanding behavior in bullying. Journal of Adolescence 31(1): 93–105. doi: 10.1016/j.adolescence.2007.05.002. Google Scholar | Crossref | Medline | ISI | |
| Gini, G., Pozzoli, T., Borghi, F., Franzoni, L. (2008) The role of bystanders in students’ perception of bullying and sense of safety. Journal of School Psychology 46(6): 617–638. doi: 10.1016/j.jsp.2008.02.001. Google Scholar | Crossref | Medline | ISI | |
| Goossens, F. A., Olthof, T., Dekker, P. H. (2006) New participant role scales: Comparison between various criteria for assigning roles and indications for their validity. Aggressive Behavior 32(4): 343–357. doi: 10.1002/ab.20133. Google Scholar | Crossref | ISI | |
| Hawkins, D., Pepler, D. J., Craig, W. M. (2001) Naturalistic observations of peer interventions in bullying. Social Development 10(4): 512–527. doi: 10.1111/1467-9507.00178. Google Scholar | Crossref | ISI | |
| Hazler, R. J., Hoover, J. H., Oliver, R. (1991) Student perceptions of victimization by bullies in school. The Journal of Humanistic Education and Development 29(4): 143–150. doi: 10.1002/j.2164-4683.1991.tb00018.x. Google Scholar | Crossref | |
| Hokoda, A., Lu, H. H. A., Angeles, M. (2006) School bullying in Taiwanese adolescents. Journal of Emotional Abuse 6(4): 69–90. doi: 10.1300/J135v06n04_04. Google Scholar | Crossref | |
| Huang, Z., Liu, Z., Liu, X., Lv, L., Zhang, Y., Ou, L., Li, L. (2016) Risk factors associated with peer victimization and bystander behaviors among adolescent students. International Journal of Environmental Research and Public Health 13(8): 759–770. doi: 10.3390/ijerph13080759. Google Scholar | Crossref | ISI | |
| Kanetsuna, T., Smith, P. K. (2002) Pupil insights into bullying, and coping with bullying: A bi-national study in Japan and England. Journal of School Violence 1(3): 5–29. doi:10.1300/J202v01n03_02. Google Scholar | Crossref | |
| Latané, B., Nida, S. (1981) The years of research on group size and helping. Psychological Bulletin 89: 308–324. doi: 10.1037//0033-2909.89.2.308. Google Scholar | Crossref | ISI | |
| Latané, B., Robin, J. (1969) A lady in distress: Inhibiting effects of friends and strangers on bystander intervention. Journal of Experimental Social Psychology 5: 189–202. doi: 10.1016/0022-1031(69)90046-8. Google Scholar | Crossref | ISI | |
| Lee, S. (2013) School bullying: Need for bystander intervention and change of social context. The Korean Journal of School Psychology 10(1): 59–82. doi:10.16983/kjsp.2013.10.1.59. Google Scholar | Crossref | |
| Lee, S. Y., Oh, I. (2012) School violence in South Korea: An overview of school violence and intervention efforts. In: Jimerson, S., Furlong, M., Nickerson, A., Mayer, M. (eds) Handbook of school violence and school safety: International research and practice, 2nd ed. Routledge. doi: 10.4324/9780203841372.ch40. Google Scholar | |
| Levine, M., Cassidy, C., Brazier, G. (2002) Self-categorization and bystander non-intervention: Two experimental studies. Journal of Applied Social Psychology 32: 1452–1463. doi: 10.1111/j.1559-1816.2002.tb01446.x. Google Scholar | Crossref | ISI | |
| Levine, M., Crowther, S. (2008) The responsive bystander: How social group membership and group size can encourage as well as inhibit bystander intervention. Journal of Personality and Social Psychology 95(6): 1429–1469. doi: 10.1037/a0012634. Google Scholar | Crossref | Medline | ISI | |
| Lim, W. S. (2008) Study on the hazardous environment of the youth and peer pressure for it. The Journal of Korea Youth Research 15(7): 227–241. Google Scholar | |
| Machackova, H., Dedkova, L., Mezulanikova, K. (2015) Brief report: The bystander effect in cyberbullying incidents. Journal of Adolescence 43: 96–99. doi: 10.1016/j.adolescence.2015.05.010. Google Scholar | Crossref | Medline | ISI | |
| McGovern, L. P., Ditzian, J. L., Taylor, S. P. (1975) The effect of one positive reinforcement of helping behavior. Bullutin of the Psychonomic Society 5: 421–423. doi:10.3758/bf03333287. Google Scholar | Crossref | |
| Menesini, E., Codecasa, E., Benelli, B. (2003) Enhancing children’s responsibility to take action against bullying: Evaluation of a befriending intervention in Italian middle schools. Aggressive Behavior 29: 10–14. doi: 10.1002/ab.80012. Google Scholar | Crossref | ISI | |
| Nam, M., Hong, B. (2015) A study of factors affecting the bystanders role in school violence. Korean Journal of Child Welfare 50: 109–144. Google Scholar | |
| Nesdale, D., Scarlett, M. (2004) Effects of group and situational factors on pre-adolescent children’s attitudes to school bullying. International Journal of Behavioral Development 28(5): 428–434. doi: 10.1080/01650250444000144. Google Scholar | SAGE Journals | ISI | |
| Newman, P. R., Newman, B. M. (1976) Early adolescence and its conflict: Group identity vs. alienation. Adolescence 11: 251–274. Google Scholar | |
| Nickerson, A. B., Aloe, A. M., Livingston, J. A., Feeley, T. H. (2014) Measurement of the bystander intervention model for bullying and sexual harassment. Journal of Adolescence 37(4): 391–400. doi: 10.1016/j.adolescence.2014.03.003. Google Scholar | Crossref | Medline | ISI | |
| Obermaier, M., Fawzi, N., Koch, T. (2014) Bystanding or standing by? How the number of bystanders affects the intention to intervene in cyberbullying. New Media and Society. , 1461444814563519. doi: 10.1177/1461444814563519. Google Scholar | ISI | |
| Oh, I. (2010) Psychological factors influencing bystanders’ behavioral reactions to bullying: A focus on empathy and aggression. The Journal of Elementary Education 23(1): 45–63. Google Scholar | |
| Oh, I. (2014) The relations of traditional bullying, cyberbullying and types of aggression in terms of gender. Korean Journal of Counseling 15(5): 1871–1885. doi:10.15703/kjc.15.5.201410.1871. Google Scholar | Crossref | |
| Oh, I., Hazler, R. J. (2009) Contributions of personal and situational factors to bystanders’ reactions to school bullying. School Psychology International 30(3): 291–310. doi:10.1177/0143034309106499. Google Scholar | SAGE Journals | ISI | |
| Oh, I., Lee, S., Lee, J. (2013) A study on educational interventions for bullies and victims in school violence, Ewha Womans University School Violence Prevention Institute. Google Scholar | |
| Olweus, D. (1993) Bullying at school: What we know and what we can do, Oxford and Cambridge, MA: Blackwell.doi: 10.2307/3121681. Google Scholar | |
| Park, S. (1997) Empathy and pro-social behavior, Moonumsa: Seoul. Google Scholar | |
| Pellegrini, A. D. (2002) Bullying, victimization, and sexual harassment during the transition to middle school. Educational Psychologist 37(3): 151–163. doi: 10.1207/s15326985ep3703_2. Google Scholar | Crossref | ISI | |
| Piliavin, I. M., Rodin, J., Piliavin, J. A. (1969) Good samaritanism: An underground phenomenon? Journal of Personality and Social Psychology 13(4): 289––299. . doi: 10.1037/h0028433. Google Scholar | Crossref | ISI | |
| Pozzoli, T., Ang, R. P., Gini, G. (2012) Bystanders’ reactions to bullying: A cross-cultural analysis of personal correlates among Italian and Singaporean students. Social Development 21(4): 686–703. doi: 10.1111/j.1467-9507.2011.00651.x. Google Scholar | Crossref | ISI | |
| Pozzoli, T., Gini, G. (2012) Why do bystanders of bullying help or not? A multidimensional model. The Journal of Early Adolescence 33(3): 315–340. doi: 10.1177/0272431612440172. Google Scholar | SAGE Journals | ISI | |
| Pozzoli, T., Gini, G., Vieno, A. (2012) The role of individual correlates and class norms in defending and passive bystanding behavior in bullying: A multilevel analysis. Child Development 83(6): 1917–1931. doi: 10.1111/j.1467-8624.2012.01831.x. Google Scholar | Crossref | Medline | ISI | |
| Pöyhönen, V., Salmivalli, C. (2008) New directions in research and practice addressing bullying: Focus on defending behavior. An international perspective on understanding and addressing bullying PREV Net publication series 1: 6–43. Google Scholar | |
| Prentice, D. A., Miller, D. T. (1996) Pluralistic ignorance and the perpetuation of social norms by unwitting actors. Advances in Experimental Social Psychology 28: 161–210. doi: 10.1016/s0065-2601(08)60238-5. Google Scholar | Crossref | ISI | |
| Pronk, J., Goossens, F. A., Olthof, T., De Mey, L., Willemen, A. M. (2013) Children’s intervention strategies in situations of victimization by bullying: Social cognitions of outsiders versus defenders. Journal of School Psychology 51(6): 669–682. doi: 10.1016/j.jsp.2013.09.002. Google Scholar | Crossref | Medline | ISI | |
| Rigby, K., Johnson, B. (2006) Expressed readiness of Australian school children to act as bystanders in support of children who are being bullied. Educational Psychology 26: 425–440. doi: 10.1080/01443410500342047. Google Scholar | Crossref | |
| Rigby, K., Slee, P. T. (1991) Bullying among Australian school children: Reported behavior and attitudes toward victims. Journal of Social Psychology 131: 615–627. doi:10.1080/00224545.1991.9924646. Google Scholar | Crossref | Medline | ISI | |
| Rock, P. F., Baird, J. A. (2012) Tell the teacher or tell the bully off: Children’s strategy production for bystanders to bullying. Social Development 21(2): 414–424. doi:10.1111/j.1467-9507.2011.00627.x. Google Scholar | Crossref | ISI | |
| Rolider, A., Ochayon, M. (2005) Bystander behaviours among Israeli children witnessing bullying behaviour in school settings. Pastoral Care in Education 23(2): 36–39. doi:10.1111/j.0264-3944.2005.00330.x. Google Scholar | Crossref | |
| Salmivalli, C. (1999) Participant role approach to school bullying: Implications for interventions. Journal of Adolescence 22(4): 453–459. doi:10.1006/jado.1999.0239. Google Scholar | Crossref | Medline | ISI | |
| Salmivalli, C. (2010) Bullying and the peer group: A review. Aggression and Violent Behavior 15(2): 112–120. doi:10.1016/j.avb.2009.08.007. Google Scholar | Crossref | ISI | |
| Salmivalli, C., Huttunen, A., Lagerspetz, K. M. (1997) Peer networks and bullying in schools. Scandinavian Journal of Psychology 38(4): 305–312. doi:10.1111/1467-9450.00040. Google Scholar | Crossref | ISI | |
| Salmivalli, C., Lagerspetz, K., Bjorkqvist, K., Osterman, K., Kaukiainen, A. (1996) Bullying as a group process: Participant roles and their relations to social status within the group. Aggressive Behavior 22(1): 1–15. doi:10.1002/(sici)1098-2337(1996)22:1<1::aid-ab1>3.0.co;2-t. Google Scholar | Crossref | ISI | |
| Salmivalli, C., Voeten, M., Poskiparta, E. (2011) Bystanders matter: Associations between reinforcing, defending, and the frequency of bullying behavior in classrooms. Journal of Clinical Child and Adolescent Psychology 40(5): 668–676. doi:10.1080/15374416.2011.597090. Google Scholar | Crossref | Medline | ISI | |
| Seo, M. (2015) Stability and changes of participant roles in bullying and associated environmental characteristics: With a focus on peer bystanders. Korean Journal of Child Studies 36(4): 17–32. doi: 10.5723/kjcs.2015.36.4.17. Google Scholar | Crossref | |
| Seo, M., Kim, K. (2006) Analysis of variables for classifying types of outsiders in bullying situations. The Korean Journal of Child Studies 27(6): 35–51. Retrieved from http://www.childstudies.org/upload/pdf/31201199.pdf. Google Scholar | |
| Shaffer, D. R., Rogel, M., Hendrick, C. (1975) Intervention in the library: The effect of increased responsibility on bystanders’ willingness to prevent a theft. Journal of Applied Social Psychology 5: 303–319. doi: 10.1111/j.1559-1816.1975.tb00683.x. Google Scholar | Crossref | ISI | |
| Sierksma, J., Thijs, J., Verkuyten, M. (2014) Children’s intergroup helping: The role of empathy and peer group norms. Journal of Experimental Child Psychology 126: 369–383. doi: 10.1016/j.jecp.2014.06.002. Google Scholar | Crossref | Medline | ISI | |
| Solberg, M. E., Olweus, D. (2003) Prevalence estimation of school bullying with the Olweus Bully/Victim Questionnaire. Aggressive Behavior 29: 239–268. doi: 10.1002/ab.10047. Google Scholar | Crossref | ISI | |
| Solomon, L. Z., Solomon, H., Stone, R. (1978) Helping as a function of number of bystanders and ambiguity of emergency. Personality and Social Psychology Bulletin 4: 318–321. doi: 10.1177/014616727800400231. Google Scholar | SAGE Journals | ISI | |
| Song, J., Oh, I. (2015) A comparison analysis of self-report and peer-nomination in the assessment of school violence experience. Korean Journal of Counseling 16(4): 377–394. doi: 10.15703/kjc.16.4.201508.377. Google Scholar | Crossref | |
| Thornberg, R. (2007) A classmate in distress: Schoolchildren as bystanders and their reasons for how they act. Social Psychology of Education 10(1): 5–28. doi: 10.1007/s11218-006-9009-4. Google Scholar | Crossref | |
| Thornberg, R., Tenenbaum, L., Varjas, K., Meyers, J., Jungert, T., Vanegas, G. (2012) Bystander motivation in bullying incidents: To intervene or not to intervene? Western Journal of Emergency Medicine 13(3): 247–252. doi: 10.5811/westjem.2012.3.11792. Google Scholar | Crossref | |
| Williford, A., Boulton, A., Noland, B., Little, T. D., Kärnä, A., Salmivalli, C. (2012) Effects of the KiVa anti-bullying program on adolescents’ depression, anxiety, and perception of peers. Journal of Abnormal Child Psychology 40(2): 289–300. doi: 10.1007/s10802-011-9551-1. Google Scholar | Crossref | Medline | ISI |

