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Morneau-Vaillancourt, Geneviève; Matte-Gagné, Célia; Cheesman, Rosa; Brendgen, Mara; Vitaro, Frank; Tremblay, Richard; Dionne, Ginette; Boivin, Michel – Developmental Psychology, 2021
The present study examined, within a longitudinal family-informed design and across middle childhood, the predictive associations between preference for solitude and social wariness, two forms of social withdrawal, and peer difficulties. Specifically, preference for solitude, rather than social wariness, was expected to predict peer victimization…
Descriptors: Preferences, Withdrawal (Psychology), Psychological Characteristics, Social Adjustment
Brendgen, Mara; Poulin, François; Denault, Anne-Sophie – Developmental Psychology, 2019
Peer victimization during the school years can impair victims' mental and physical health even in adulthood. Moreover, some victims of school bullying may also experience revictimization at work as adults. Later revictimization at work may thus at least partly explain (i.e., mediate) the negative consequences of peer victimization in school.…
Descriptors: Bullying, Peer Relationship, Victims, Mental Health
Guimond, Fanny-Alexandra; Brendgen, Mara; Correia, Stephanie; Turgeon, Lyse; Vitaro, Frank – Developmental Psychology, 2018
This study examined the moderating role of classroom injunctive norms salience regarding social withdrawal and regarding aggression in the longitudinal association between these behaviors and peer victimization. A total of 1,769 fourth through sixth graders (895 girls, M = 10.25 years, SD = 1.03) from 23 schools (67 classrooms) completed a peer…
Descriptors: Correlation, Peer Relationship, Victims, Withdrawal (Psychology)
Personal and Familial Predictors of Peer Victimization Trajectories from Primary to Secondary School
Brendgen, Mara; Girard, Alain; Vitaro, Frank; Dionne, Ginette; Boivin, Michel – Developmental Psychology, 2016
Using a sample of 767 children (403 girls, 364 boys), this study aimed to (a) identify groups with distinct trajectories of peer victimization over a 6-year period from primary school through the transition to secondary school, and (b) examine the associated personal (i.e., aggression or internalizing problems) and familial (family status,…
Descriptors: Elementary School Students, Secondary School Students, Victims, Peer Relationship
Viau, Sarah-Jeanne; Denault, Anne-Sophie; Dionne, Ginette; Brendgen, Mara; Geoffroy, Marie-Claude; Côté, Sylvana; Larose, Simon; Vitaro, Frank; Tremblay, Richard E.; Boivin, Michel – Journal of Early Adolescence, 2020
This study aimed to identify joint trajectories of peer cyber and traditional victimization from ages 13 to 17 and individual, family, peer, and school risk factors associated with group membership. The sample was composed of 1,194 adolescents (54.2% girls). Cyber and traditional victimization were assessed at ages 13, 15, and 17. The results…
Descriptors: Victims, Peer Relationship, Adolescents, At Risk Persons
Guimond, Fanny-Alexandra; Brendgen, Mara; Vitaro, Frank; Forget-Dubois, Nadine; Dionne, Ginette; Tremblay, Richard E.; Boivin, Michel – Developmental Psychology, 2014
This study used a genetically informed design to assess the effects of friends' and nonfriends' reticent and dominant behaviors on children's observed social reticence in a competitive situation. Potential gene-environment correlations (rGE) and gene-environment interactions (GxE) in the link between (a) friends' and…
Descriptors: Genetics, Environmental Influences, Prediction, Correlation
Salvas, Marie-Claude; Vitaro, Frank; Brendgen, Mara; Dionne, Ginette; Tremblay, Richard E.; Boivin, Michel – Developmental Psychology, 2014
Several authors consider high and frequent conflicts between friends during childhood as a serious risk for subsequent conduct problems such as generalized physical aggression toward others (e.g., Kupersmidt, Burchinal, & Patterson, 1995; Sebanc, 2003). Although it seems logical to assume that friendship conflict could have some negative…
Descriptors: Friendship, Behavior Problems, Aggression, Conflict
Brendgen, Mara; Vitaro, Frank; Barker, Edward D.; Girard, Alain; Dionne, Ginette; Tremblay, Richard E.; Boivin, Michel – Developmental Psychology, 2013
Using a genetically informed design, this study examined the additive and interactive effects of genetic risk, personal peer victimization experiences, and peer victimization experienced by others on children's aggression and depression symptoms. Of major interest was whether these effects varied depending on whether or not the victimized others…
Descriptors: Aggression, Genetics, Social Environment, Depression (Psychology)
Salvas, Marie-Claude; Vitaro, Frank; Brendgen, Mara; Cantin, Ste´phane – Merrill-Palmer Quarterly: Journal of Developmental Psychology, 2016
Positive friendships have been related to decreasing levels of children's physical aggression over time. While this evidence calls for interventions aimed at helping children build good-quality friendships, tests of causality through experimental manipulations are still needed. The goal of this study was to examine whether an intervention aimed to…
Descriptors: Correlation, Aggression, Friendship, Intervention
Vitaro, Frank; Boivin, Michel; Brendgen, Mara; Girard, Alain; Dionne, Ginette – Journal of Educational Psychology, 2012
The goal of this study was to examine how different types of social experiences in kindergarten relate to Grade 1 academic achievement, while controlling for possible genetic and shared environmental influences through the use of the monozygotic (MZ) twin difference method. Social experiences in kindergarten included relationship quality with the…
Descriptors: Academic Achievement, Parent Child Relationship, Peer Groups, Rejection (Psychology)
Veronneau, Marie-Helene; Vitaro, Frank; Brendgen, Mara; Dishion, Thomas J.; Tremblay, Richard E. – Developmental Psychology, 2010
This study tested a transactional model of reciprocal influences regarding students' peer experiences (peer acceptance, peer rejection, and friends' academic achievement) and students' academic achievement from middle childhood to early adolescence. This longitudinal model was tested on 452 students (198 girls), mostly Caucasian and French…
Descriptors: Academic Achievement, Early Adolescents, Children, Friendship
Boivin, Michel; Brendgen, Mara; Vitaro, Frank; Dionne, Ginette; Girard, Alain; Perusse, Daniel; Tremblay, Richard E. – Child Development, 2013
This study assessed the genetic and environmental contributions to peer difficulties in the early school years. Twins' peer difficulties were assessed longitudinally in kindergarten (796 twins, "M"[subscript age] = 6.1 years), Grade 1 (948 twins, "M"[subscript age] = 7.1 years), and Grade 4 (868 twins, "M"[subscript…
Descriptors: Twins, Kindergarten, Genetics, Grade 1
Rivizzigno, Alessandra S.; Brendgen, Mara; Feng, Bei; Vitaro, Frank; Dionne, Ginette; Tremblay, Richard E.; Boivin, Michel – Merrill-Palmer Quarterly: Journal of Developmental Psychology, 2014
Enriched environments may moderate the effect of genetic factors on prosocial leadership (gene-environment interaction, G × E). However, positive environmental experiences may also themselves be influenced by a genetic disposition for prosocial leadership (gene-environment correlation, rGE). Relating these processes to friendships, the present…
Descriptors: Genetics, Environmental Influences, Prosocial Behavior, Leadership
Vitaro, Frank; Brendgen, Mara; Boivin, Michel; Cantin, Stephane; Dionne, Ginette; Tremblay, Richard E.; Girard, Alain; Perusse, Daniel – Child Development, 2011
This study used the monozygotic (MZ) twin difference method to examine whether differences in friends' aggression increased the differences in MZ twins' aggression and depressive symptoms from kindergarten to Grade 1 and whether perceived victimization by the friend played a mediating role in this context. Participants were 223 MZ twin pairs.…
Descriptors: Twins, Kindergarten, Grade 1, Gender Differences
Witvliet, Miranda; van Lier, Pol A. C.; Brendgen, Mara; Koot, Hans M.; Vitaro, Frank – Journal of Clinical Child and Adolescent Psychology, 2010
This study examined the longitudinal link between clique membership status and the development of psychopathology in 451 children followed annually from age 9 to 12 years. Classroom clique membership status was identified through social network analysis, and internalizing and externalizing problems were assessed using peer nominations. Controlling…
Descriptors: Network Analysis, Peer Relationship, Psychopathology, Probability