{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,12]],"date-time":"2026-01-12T06:53:32Z","timestamp":1768200812762,"version":"3.49.0"},"reference-count":23,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2013,12,5]],"date-time":"2013-12-05T00:00:00Z","timestamp":1386201600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>This exploratory and cross-sectional study aimed to identify the prevalence of bullying in a group of students and analyze the data regarding the gender of those involved in the violence. A questionnaire adapted from Olweus was applied in seven elementary education schools in Portugal. The sample consisted of 387 students between 7 and 14 years old. Data are presented in terms of descriptive statistics and differences between proportions were analyzed using chi-square tests. The gender analysis of victimization and aggression shows that boys and girls are both victims and aggressors, and there are significant differences in involvement in bullying between genders and the roles played. Boys are victims more often when considering different types of bullying,  although significant differences were only found for physical aggression. Strategies that include gender roles are a priority for prevention and careful attention to this phenomenon in the school context. The questions addressed contribute to a broader understanding of the phenomenon, emphasizing the differential participation of boys and girls in bullying.<\/jats:p>","DOI":"10.3390\/ijerph10126820","type":"journal-article","created":{"date-parts":[[2013,12,5]],"date-time":"2013-12-05T11:35:30Z","timestamp":1386243330000},"page":"6820-6831","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":126,"title":["The Involvement of Girls and Boys with Bullying: An Analysis of Gender Differences"],"prefix":"10.3390","volume":"10","author":[{"given":"Marta","family":"Iossi Silva","sequence":"first","affiliation":[{"name":"University of S\u00e3o Paulo at Ribeir\u00e3o Preto College of Nursing, WHO Collaborating Centre for Nursing Research Development, Ribeir\u00e3o Preto 14040-902, Brazil"}]},{"given":"Beatriz","family":"Pereira","sequence":"additional","affiliation":[{"name":"Institute of Education, University of Minho, Braga 4710-057, Portugal"}]},{"given":"Denisa","family":"Mendon\u00e7a","sequence":"additional","affiliation":[{"name":"Institute of Biomedical Science Abel Salazar, University of Porto, Porto 4050-313, Portugal"}]},{"given":"Berta","family":"Nunes","sequence":"additional","affiliation":[{"name":"Bragan\u00e7a Sub-Health Region, Bragan\u00e7a 3501-862, Portugal"}]},{"given":"Wanderlei","family":"Oliveira","sequence":"additional","affiliation":[{"name":"University of S\u00e3o Paulo at Ribeir\u00e3o Preto College of Nursing, WHO Collaborating Centre for Nursing Research Development, Ribeir\u00e3o Preto 14040-902, Brazil"}]}],"member":"1968","published-online":{"date-parts":[[2013,12,5]]},"reference":[{"key":"ref_1","unstructured":"Pereira, B.O. (2008). ParaUma Escola Sem Viol\u00eancia. Estudo e Preven\u00e7\u00e3o Das Pr\u00e1ticas Agressivas Entre Crian\u00e7as, Funda\u00e7\u00e3o Calouste Gulbenkian\/Minist\u00e9rio da Ci\u00eancia e Tecnologia. [2nd ed.]."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"42","DOI":"10.1080\/15388220802067813","article-title":"Parent\/child concordance about bullying involvement and family characteristics related to bullying and peer victimization","volume":"8","author":"Holt","year":"2009","journal-title":"J. Sch. Violence"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1300\/J202v07n02_02","article-title":"School bullying and the mental health of junior secondary school students in Hong Kong","volume":"7","author":"Ng","year":"2008","journal-title":"J. Sch. 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Educa\u00e7\u00e3o F\u00edsica, Lazer e sa\u00fade: Desafios e Novas Perspectivas, Champagnat."}],"container-title":["International Journal of Environmental Research and Public Health"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1660-4601\/10\/12\/6820\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T21:51:08Z","timestamp":1760219468000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1660-4601\/10\/12\/6820"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2013,12,5]]},"references-count":23,"journal-issue":{"issue":"12","published-online":{"date-parts":[[2013,12]]}},"alternative-id":["ijerph10126820"],"URL":"https:\/\/doi.org\/10.3390\/ijerph10126820","relation":{},"ISSN":["1660-4601"],"issn-type":[{"value":"1660-4601","type":"electronic"}],"subject":[],"published":{"date-parts":[[2013,12,5]]}}}