Publicado 2022-07-01
Palabras clave
- Acoso escolar; adolescentes; observación; escalas de medición; validez; Colombia.
Resumen
El objetivo de este estudio fue diseñar y validar una escala de roles de observadores de bullying (5-EROB), en una muestra incidental de 1,019 adolescentes del sur de Colombia. Se analizaron evidencias de validez de contenido y de constructo. La validez predictiva se analizó con la Escala de Desligamiento Moral de Bandura. La 5-EROB presentó óptimas propiedades psicométricas para una estructura de cinco factores: observador pro-agresor, defensor, indeciso, indiferente y no implicado. Los análisis destacan que el rol pro-agresor se explica directamente por la comparación ventajosa, la atribución de la culpa y la deshumanización; mientras que el defensor se explica inversamente por el desplazamiento de la responsabilidad y la deshumanización. Los resultados validan el uso de la escala 5-EROB, pionera en el contexto colombiano y latinoamericano.
Citas
- Aguirre-Flórez, Diana Carolina; Cataño-Castrillón, José Jaime; Cañón, Sandra Constanza; Marín-Sánchez, Daniel Felipe; Rodríguez-Pabón, Julieth Tatiana; Rosero-Pantoja, Luz Ángela; Valenzuela-Díaz, Laura Patricia y Vélez-Restrepo, Jennifer (2015). “Riesgo suicida y factores asociados en adolescentes de tres colegios de la ciudad de Manizales (Colombia), 2013”, Revista de la Facultad de Medicina, vol. 63, núm. 3, pp. 419-429. https://doi.org/10.15446/revfacmed.v63n3.44205
- Alcántar Nieblas, Carolina; Valdés Cuervo, Ángel Alberto; Carlos Martínez, Ernesto Alonso; Martínez Ferrer, Belén y García Vázquez, Fernanda Inez (2018). “Propiedades psicométricas de la adaptación al español de la Participant Role Approach (PRA)”, Revista Colombiana de Psicología, vol. 27, núm. 2, pp. 177-192. https://doi.org/10.15446/ rcp.v27n2.68721
- Ato, Manuel; López-García, Juan y Benavente, Ana (2013). “Un sistema de clasificación de los diseños de investigación en psicología”, Anales de Psicología, vol. 29, núm. 3, pp. 1038-1059. https://doi.org/10.6018/analesps.29.3.178511
- Bandura, Albert (2002). “Selective moral disengagement in the exercise of moral agency”, Journal of Moral Education, vol. 31, núm. 2, pp. 101-119. https://doi. org/10.1080/0305724022014322
- Bandura, Albert (2004). “Selective exercise of moral agency”, en T. A. Thorkildsen y H. J. Walberg (coords.), Nurturing morality, Norwell: Kluwer Academic, pp. 37-57. Disponible en: https://www.uky.edu/~eushe2/Bandura/Bandura2004b.pdf
- Bandura, Albert (coord.) (2016). Moral disengagement: How people do harm and live with themselves, Nueva York: Worth Publishers. Disponible en: https://psycnet.apa.org/ record/2015-43532-000
- Bandura, Albert; Barbaranelli, Claudio; Caprara, Gian Vittorio y Pastorelli, Concetta (1996). “Mechanisms of moral disengagement in the exercise of moral agency”, Journal of Personality and Social Psychology, vol. 71, núm. 2, pp. 364-374. https://doi. org/10.1037/0022-3514.71.2.364
- Bauman, Sheri; Yoon, Jina; Iurino, Charlotte y Hackett, Liam (2020). “Experiences of adolescent witnesses to peer victimization: the bystander effect”, Journal of School Psychology, vol. 80, pp. 1-14. https://doi.org/10.1016/j.jsp.2020.03.002
- Belacchi, Carmen (2008). “I ruoli dei partecipanti nel bullismo: Una nuova proposta”, Giornale Italiano di Psicologia, vol. 35, núm. 4, pp. 885-911. https://doi.org/10.1421/28422
- Belacchi, Carmen y Farina, Eleonora (2010). “Prosocial/hostile roles and emotion comprehension in preschoolers”, Aggressive Behavior, vol. 36, núm. 6, pp. 371-89. https://doi.org/10.1002/ab.20361
- Bentler, R. y Wu, J. (2012). EQS for windows (version 6.2) [Statistical Program for Windows], Encino: Multivariate Software, Inc.
- Bistrong, Elizabeth; Bottiani, Jessika y Bradshaw, Catherine (2019). “Youth reactions to bullying: Exploring the factors associated with students’ willingness to intervene”, Journal of School Violence, vol. 18, núm. 4, pp. 522-535. https://doi.org/10.1080/15 388220.2019.1576048
- Bjärehed, Marlene; Thornberg, Robert; Wänström, Linda y Gini, Gianluca (2019). “Mechanisms of moral disengagement and their associations with indirect bullying, direct bullying, and pro-aggressive bystander behavior”, The Journal of Early Adolescence, vol. 40, núm. 1, pp. 28-55. https://doi.org/10.1177/0272431618824745
- Brown, Timothy A. (2006). Confirmatory factor analysis for applied research, Nueva York: Guilford Press.
- Bryant, Fred y Satorra, Albert (2012). “Principles and practice of scaled difference Chi- Square testing”, Structural Equation Modeling: A Multidisciplinary Journal, vol. 19, núm. 3, pp. 372-398. https://doi.org/10.1080/10705511.2012.687671
- Cano-Echeverri, Margarita y Vargas-González, Jorge (2018). “Actores del acoso escolar”, Revista Médica de Risaralda, vol. 23, núm. 1, pp. 60-66. Disponible en: http://www. scielo.org.co/scielo.php?script=sci_abstract&pid=S0122-06672018000100011&lng =en&nrm=iso&tlng=es
- Carozzo, Julio (2015). “Los espectadores y el código del silencio”, Revista Espiga, vol. 14, núm. 29, pp. 1-18. https://doi.org/10.22458/re.v14i29.948
- Chen, Guanghui; Zhang, Wenjuan; Zhang, Wenxin y Deater-Deckard, Kirby (2017). “A “defender protective effect” in multiple-role combinations of bullying among chinese adolescents”, Journal of Interpersonal Violence, vol. 35, núms. 7-8, pp. 1-23. https:// doi.org/10.1177/0886260517698278
- Congreso de la República de Colombia (2006). Ley 1090, Bogotá: Congreso de la República de Colombia. Disponible en: https://www.funcionpublica.gov.co/eva/gestornormativo/ norma.php?i=66205 (consultado: 8 de abril de 2021).
- Cuevas Jaramillo, María Clara y Marmolejo Medina, María Alejandra (2014). “Observadores en situaciones de victimización por intimidación escolar: caracterización y razones de su rol”, Psicología desde el Caribe, vol. 31, núm. 1, pp. 103-132. http://dx.doi. org/10.14482/psdc.31.1.4806
- Cuevas Jaramillo, María Clara y Marmolejo Medina, María Alejandra (2016). “Observadores: un rol determinante en el bullying”, Pensamiento Psicológico, vol. 14, núm. 1, pp. 89- 102. Disponible en: http://www.redalyc.org/articulo.oa?id=80144041007
- Dervishi, Eglantina; Lala, Marjola y Ibrahimi, Silva (2019). “School bullying and symptoms of depression”, Archives of Psychiatry and Psychotherapy, vol. 2, pp. 48-55. https://doi. org/10.12740/APP/103658
- Elosua Oliden, Paula y Zumbo, Bruno (2008). “Coeficientes de fiabilidad para escalas de respuesta categórica ordenada”, Psicothema, vol. 20, núm. 4, pp. 896-901. Disponible en: http://www.redalyc.org/articulo.oa?id=72720458
- Forsberg, Camilla; Thornberg, Robert y Samuelsson, Marcus (2014). “Bystanders to bullying: fourth-to seventh-grade students’ perspectives on their reactions”, Research Papers in Education, vol. 29, núm. 5, pp. 557-576. https://doi.org/10.1080/026715 22.2013.878375
- García Montañez, Maritza Verónica y Ascensio Martínez, Christian Amaury (2015). “Bullying y violencia escolar: diferencias, similitudes, actores, consecuencias y origen”, Revista Intercontinental de Psicología y Educación, vol. 17, núm. 2, pp. 9-38. Disponible en: http://www.redalyc.org/articulo.oa?id=80247939002
- González González, Elsa Natalí; Vera Noriega, José Ángel; Peña Ramos, Martha Olivia y Durazo Salas, Francisco Fernando (2020). “Propiedades métricas de una escala para medir roles asociados de los espectadores del bullying en alumnos mexicanos de secundaria”, Educación y Humanismo, vol. 22, núm. 38, pp. 1-12. Disponible en: http://revistas. unisimon.edu.co/index.php/educacion/article/view/3611/4243
- Greif, Jennifer; Holt, Melissa; Oblath, Rachel y Furlong, Michael (2019). “Bullying and Bystander Behaviors”, en J. Fredricks; A. Reschly y S. Christenson (coords.), Handbook of Student Engagement Interventions Working with Disengaged Students, San Diego: Academic Press, pp. 217-230. https://doi.org/10.1016/B978-0-12-813413-9.00015-2
- Gutiérrez Ángel, Nieves (2018). “Análisis bibliográfico de las características y consecuencias de los roles desempeñados en la violencia escolar: agresores, víctimas y observadores”, Apuntes de Psicología, vol. 36, núm. 3, pp. 181-189. Disponible en: http://www. apuntesdepsicologia.es/index.php/revista/article/view/749/518
- Herrera-López, Mauricio; Romera, Eva y Ortega-Ruiz, Rosario (2017). “Bullying y cyberbullying en Colombia; coocurrencia en adolescentes escolarizados”, Revista Latinoamericana de Psicología, vol. 49, núm. 3, pp. 163-172. https://doi.org/10.1016/j. rlp.2016.08.001
- Hu, Li‐tze y Bentler, Peter (1999). “Cutoff criteria for fit indexes in covariance structure analysis: Conventional criteria versus new alternatives. Structural Equation Modeling”, A Multidisciplinary Journal, vol. 6, núm. 1, pp. 1-55. https://doi. org/10.1080/10705519909540118
- Jungert, Tomas y Perrin, Sean (2019). “Trait anxiety and bystander motivation to defend victims of school bullying”, Journal of Adolescence, vol. 77, núm. 1, pp. 1-10. https://doi.org/10.1016/j.adolescence.2019.10.001
- Jungert, Tomas; Piroddi, Barbara y Thornberg, Robert (2016). “Early adolescents’ motivations to defend victims in school bullying and their perceptions of student teacher relationships: a self-determination theory approach”, Journal of Adolescence, vol. 53, núm. 1, pp. 75-90. https://doi.org/10.1016/j.adolescence.2016.09.001
- Kilpatrick, Michelle; Hodgson, Kelly; Jenkins, Lindsay y Davidson, Lisa (2016). “Bullying participant behaviors questionnaire (BPBQ): Establishing a reliable and valid measure”, Journal of School Violence, vol. 15, núm. 2, pp. 158-188. https://doi.org/10.1080/15 388220.2014.964801
- Korkmaz, Selcuk; Goksuluk, Dincer y Zararsiz, Golkmen (2014). “MVN: An R Package for Assessing Multivariate Normality”, The R Journal, vol. 6, núm. 2, pp. 151-162. Disponible en: https://www.R-project.org/
- Kubiszewski, Violaine (2018). “Agir ou ne pas agir? Réactions des élèves témoins de harcèlement entre pairs”, Enfance, vol. 3, núm. 3, pp. 441-453. https://doi.org/10.3917/ enf2.183.0441
- Ladd, G.; Ettekal, I. y Kochenderfer-Ladd, B. (2017). “Peer victimization trajectories from kindergarten through high school: Differential pathways for children’s school engagement and achievement”, Journal of Educational Psychology, vol. 109, núm. 6, pp. 826-841. https://doi.org/10.1037/edu0000177
- Lambe Laura; Hudson, Chloe; Craig, Wendy y Pepler, Debra (2017). “Does defending come with a cost? Examining the psychosocial correlates of defending behaviour among bystanders of bullying in a Canadian sample”, Child Abuse & Neglect, vol. 65, pp. 112-123. https://doi.org/10.1016/j.chiabu.2017.01.012
- Lloret-Segura, Susana; Ferreres-Traver, Adoración; Hernández-Baeza, Ana y Tomás- Marco, Inés (2014). “El análisis factorial exploratorio de los ítems: una guía práctica, revisada y actualizada”, Anales de Psicología, vol. 30, núm. 3, pp. 1151-1169. https://doi.org/10.6018/analesps.30.3.199361
- Lorenzo-Seva, Urbano y Ferrando, Pere (2006). “FACTOR: A computer program to fit the exploratory factor analysis model”, Behavioral Research Methods, vol 38, núm. 1, pp. 88-91. https://doi.org/10.3758/BF03192753
- Lytle, Robert; Bratton, Tabrina y Hudson, Heather (2021). “Bystander apathy and intervention in the era of social media”, en J. Bailey, A. Flynn y N. Henry (coords.), The Emerald International Handbook of Technology Facilitated Violence and Abuse (Emerald Studies in Digital Crime, Technology and Social Harms), Bingley: Emerald Publishing Limited, pp. 711-728. https://doi.org/10.1108/978-1-83982-848- 520211052
- Midgett, Aida; Doumas, Diana; Trull, Rhiannon y Johnston, April (2017). “A randomized controlled study evaluating a brief, bystander bullying intervention with Junior High School Students”, Journal of School Counseling, vol. 15, núm. 9, pp. 1-34. Disponible en: https://eric.ed.gov/?id=EJ1146195
- Midgett, Aida; Moody, Steven; Reilly, Blaine y Lyter, Sarah (2017). “The phenomenological experience of student-advocates trained as defenders to stop school bullying”, The Journal of Humanistic Counseling, vol. 56, núm. 4, pp. 53-71. https://doi.org/10.1002/ johc.12044
- Midgett, Aida y Doumas, Diana (2019). “Witnessing bullying at school: the association between being a bystander and anxiety and depressive symptoms”, School Mental Health, vol. 11, pp. 454-463. https://doi.org/10.1007/s12310-019-09312-6
- Modecki, Kathryn; Minchin, Jeannie; Harbaugh, Allen; Guerra, Nancy y Runions, Kevin (2014). “Bullying prevalence across contexts: A meta-analysis measuring cyber and traditional bullying”, Journal of Adolescent Health, vol. 55, núm. 5, pp. 602-611. https://doi.org/10.1016/j.jadohealth.2014.06.007
- Moran, Molly; Midgett, Aida; Doumas, Diana; Porchia, Sherise y Moody, Steve (2019). “A mixed method evaluation of a culturally adapted, brief, bullying bystander intervention for middle school students”, Journal of Child and Adolescent Counseling, vol. 5, núm. 3, pp. 221-238. https://doi.org/10.1080/23727810.2019.1669372
- Morata-Ramírez, María y Holgado-Tello, Francisco (2013). “Construct validity of Likert scales through confirmatory factor analysis: A simulation study comparing different methods of estimation based on pearson and polychoric correlations”, International Journal of Social Science Studies, vol. 1, núm. 1, pp. 54-61. https://doi.org/10.11114/ ijsss.v1i1.27
- Moreno-Bataller, Cecilia-Beatriz; Segatore-Pittón, María-Emilia y Tabullo-Tomas, Ángel-Javier (2019). “Empatía, conducta prosocial y bullying. Las acciones de los alumnos espectadores”, Estudios sobre Educación, vol. 37, pp. 113-134. https://doi. org/10.15581/004.37.113-134
- Obermann, Marie-Louise (2011). “Moral disengagement among bystanders to school bullying”, Journal of School Violence, vol. 10, núm. 3, pp. 239-257. https://doi.org/ 10.1080/15388220.2011.578276
- Olweus, Dan (2013). “School bullying: Development and some important challenges”, Annual Review of Clinical Psychology, vol. 9, pp. 751-780. https://doi.org/10.1146/ annurev-clinpsy-050212-185516
- Olweus, Dan y Limber, Susan (2010). “Bullying in school: Evaluation and dissemination of the Olweus Bullying Prevention Program”, American Journal of Orthopsychiatry, vol. 80, núm. 1, pp. 124-134. https://doi.org/10.1111/j.1939-0025.2010.01015.x
- Ortega-Ruiz, Rosario; Del Rey, Rosario y Casas, José (2016). “Evaluar el bullying y el ciberbullying validación española del EBIP-Q y del ECIP-Q”, Psicología Educativa, vol. 22, núm. 1, pp. 71-79. https://doi.org/10.1016/j.pse.2016.01.004
- Padgett, Sharon y Notar, Charles (2013). “Bystanders are the key to stopping bullying”, Universal Journal of Educational Research, vol. 1, núm. 2, pp. 33-41. https:// doi.org/10.13189/ujer.2013.010201
- Postigo, Silvia; Schoeps, Konstanze; Ordóñez, Ana y Montoya-Castilla, Inmaculada (2019). “¿Qué dicen los adolescentes sobre el bullying?”, Anales de Psicología, vol. 35, núm. 2, pp. 251-258. https://doi.org/10.6018/analesps.35.2.301201
- Pozzoli, Tiziana; Gini, Gianluca y Thornberg, Robert (2016). “Bullying and defending behavior: The role of explicit and implicit moral cognition”, Journal of School Psychology, vol. 59, pp. 67-81. https://doi.org/10.1016/j.jsp.2016.09.005
- Pozzoli, Tiziana; Gini, Gianluca y Thornberg, Robert (2017). “Getting angry matters: going beyond perspective taking and empathic concern to understand bystanders’ behavior in bullying”, Journal of Adolescence, vol. 61, pp. 87-95. https://doi.org/10.1016/ j.adolescence.2017.09.011
- Quintana Peña, Alberto; Montgomery Urday, William; Malaver Soto, Carmela; Domínguez, Lara, Sergio; Ruiz S., Gabriela; García Z., Nayú y Moras R., Eduardo (2014). “Construcción y validación de la escala de tipo de espectador de violencia entre pares (TEVEP)”, Revista de Investigación en Psicología, vol. 17, núm. 2, pp. 77-92. https:// doi.org/10.15381/rinvp.v17i2.11259
- Quintana-Peña, Alberto; Domínguez-Lara, Sergio y Ruiz-Sánchez, Gabriela (2017). “Adaptación preliminar del Cuestionario Rol del Participante al Contexto Peruano”, Revista Cubana de Pediatría, vol. 89, núm. 3, pp. 278-289. Disponible en: http://scielo. sld.cu/scielo.php?script=sci_arttext&pid=S0034-75312017000300002&lng=es&tlng=es
- R Development Core Team (2008). R: A language and environment for statistical computing, Viena: R Foundation for Statistical Computing. Disponible en: https://www.R-project. org/
- Reijntjes, Albert; Vermande, Marjolijn; Olthof, Tjeert; Goossens, Frits; Aleva, Liesbeth y Van der Meulen, Matty (2016). “Defending victimized peers: opposing the bully, supporting the victim, or both?”, Aggressive Behavior, vol. 42, núm. 6, pp. 585-597. https://doi.org/10.1002/ab.21653
- Romualdo, Claudio; De Oliveira, Wanderlei; Da Silva, Jorge; Cuadros, Olga y Iossi, Marta (2019). “Papeles, características y consecuencias del bullying entre estudiantes observadores”, Salud & Sociedad, vol. 10, núm. 1, pp. 66-81. https://doi.org/10.22199/ S07187475.2019.0001.00005
- Saarento, Silja y Salmivalli, Christina (2015). “The role of classroom peer ecology and bystanders’ responses in bullying”, Child Development Perspectives, vol. 9, núm. 4, pp. 201-205. https://doi.org/10.1111/cdep.12140
- Sainio, Miia; Veenstra, René; Huitsing, Gijs y Salmivalli, Christina (2010). “Victims and their defenders: A dyadic approach”, International Journal of Behavioral Development, vol. 35, núm. 2, pp. 144-151. https://doi.org/10.1177/0165025410378068
- Salmivalli, Christina (1998). “Intelligent, attractive, well-behaving, unhappy: The structure of adolescents’ self-concept and its relations to their social behavior”, Journal of Research on Adolescence, vol. 8, núm. 3, pp. 333-354. https://doi.org/10.1207/ s15327795jra0803_3
- Salmivalli, Christina (1999). “Participant role approach to school bullying: implications for interventions”, Journal of Adolescence, vol. 22, núm. 4, pp. 453-459. https://doi. org/10.1006/jado.1999.0239
- Salmivalli, Christina (2014). “Participant roles in bullying: how can peer bystanders be utilized in interventions?”, Theory Into Practice, vol. 53, núm. 4, pp. 286-292. https:// doi.org/10.1080/00405841.2014.947222
- Salmivalli, Christina; Lagerspetz, Kirsti; Björkqvist, Kaj; Österman, Karin y Kaukiainen, Ari (1996). “Bullying as a group process: participant roles and their relations to social status within the group”, Aggressive Behavior, vol. 22, núm. 1, pp. 1-15. https://doi. org/10.1002/(SICI)1098-2337(1996)22:1<1::AID-AB1>3.0.CO;2-T
- Salmivalli, Christina y Voeten, Marinus (2004). “Connections between attitudes, group norms, and behaviour in bullying situations”, International Journal of Behavioral Development, vol. 28, núm. 3, pp. 46-258. https://doi.org/10.1080/01650250344000488
- Salmivalli, Christina; Voeten, Marinus y Poskiparta, Elisa (2011). “Bystanders matter: associations between reinforcing, defending, and the frequency of bullying behavior in classrooms”, Journal of Clinical Child & Adolescent Psychology, vol. 40, núm. 5, pp. 668-676. https://doi.org/10.1080/15374416.2011.597090
- Sarmiento, Alejandra; Herrera-López, Mauricio y Zych, Izabela (2019). “Is cyberbullying a group process? Online and offline bystanders of cyberbullying act as defenders, reinforcers and outsiders”, Computers in Human Behavior, vol. 99, pp. 328-334. https:// doi.org/10.1016/j.chb.2019.05.037
- Satorra, Albert y Bentler, Peter M. (2001). “A scaled difference chi-square test statistic for moment structure analysis”, Psychometrika, vol. 66, núm. 4, pp. 507-514. https:// doi.org/10.1007/BF02296192
- Sentse, Miranda; Veenstra, René; Kiuru, Noona y Salmivalli, Christina (2014). “A longitudinal multilevel study of individual characteristics and classroom norms in explaining bullying behaviors”, Journal of Abnormal Child Psychology, vol. 43, pp. 943-955. https://doi.org/10.1007/s10802-014-9949-7
- Song, Jiyeon y Oh, Insoo (2017). “Investigation of the bystander effect in school bullying: Comparison of experiential, psychological and situational factors”, School Psychology International, vol. 38, núm. 3, pp. 319-336. https://doi.org/10.1177/0143034317699997
- Spadafora, Natalie; Marini, Zopito y Volk, Anthony (2020). “Should i defend or should i go? An adaptive, qualitative examination of the personal costs and benefits associated with bullying intervention”, Canadian Journal of School Psychology, vol. 35, núm. 1, pp. 1-18. https://doi.org/10.1177/0829573518793752
- Sutton, J. y Smith, P. (1999). “Bullying as a group process: An adaptation of the participant role approach”, Aggressive Behavior, vol. 25, núm. 2, pp. 97-111. https://doi.org/10.1002/ (SICI)1098-2337(1999)25:2<97::AID-AB3>3.0.CO;2-7
- Thornberg, Robert y Jungert, Tomas (2013). “Bystander behavior in bullying situations: Basic moral sensitivity, moral disengagement and defender self-efficacy”, Journal of Adolescence, vol. 36, núm. 3, pp. 475-483. https://doi.org/10.1016/j.adolescence.2013.02.003
- Thornberg, Robert; Wänström, Linda; Hong, Jun y Espelage, Dorothy (2017). “Classroom relationship qualities and social-cognitive correlates of defending and passive bystanding in school bullying in Sweden: A multilevel analysis”, Journal of School Psychology, vol. 63, pp. 49-62. https://doi.org/10.1016/j.jsp.2017.03.002
- Thornberg, Robert; Landgren, Lena y Wiman, Erika (2018). “‘It depends’: A qualitative study on how adolescent students explain bystander intervention and non-intervention in bullying situations”, School Psychology International, vol. 39, núm. 4. https://doi. org/10.1177/0143034318779225
- Thornberg, Robert; Wänström, Linda; Elmelid, Rasmus; Johansson, Alexandra y Mellander, Emelie (2020). “Standing up for the victim or supporting the bully? Bystander responses and their associations with moral disengagement, defender self-efficacy, and collective efficacy”, Social Psychology of Education, vol. 23, pp. 563-581. https://doi.org/10.1007/ s11218-020-09549-z
- Volk, Anthony; Farrell, Ann; Franklin, Prarthana; Mularczyk, Kimberly y Provenzano, Daniel (2016). “Adolescent bullying in schools: An evolutionary perspective”, en D. Geary y D. Berch (coords.), Evolutionary Perspectives on Child Development and Education. Evolutionary Psychology, Nueva York: Springer, Cham, pp. 167-191. https:// doi.org/10.1007/978-3-319-29986-0_7
- Waasdorp, Tracy y Bradshaw, Catherine (2018). “Examining variation in adolescent bystanders’ responses to bullying”, School Psychology Review, vol. 47, núm. 1, pp. 18- 33. https://doi.org/10.17105/SPR-2017-0081.V47-1
- Xie, Han y Ngai, Steven (2020). “Participant roles of peer bystanders in school bullying situations: Evidence from Wuhan, China”, Children and Youth Services Review, vol. 110. https://doi.org/10.1016/j.childyouth.2020.104762
- Yang, Seung y Kim, Dong (2017). “Factors associated with bystander behaviors of Korean youth in school bullying situations”, Medicine, vol. 96, núm. 32. https://doi. org/10.1097/md.0000000000007757
