Browsing Faculté des arts et des sciences – École de psychoéducation – Travaux et publications by Author "Boivin, Michel"
Now showing items 1-20 of 38
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Aggression can be contagious : longitudinal associations between proactive aggression and reactive aggression among young twins
(Wiley, 2015-09)The present study examined sibling influence over reactive and proactive aggression in a sample of 452 same‐sex twins (113 male dyads, 113 female dyads). Between and within siblings influence processes were examined as a function of relative levels of ... -
Associations between mother-child relationship quality and adolescent adjustment : using a genetically controlled design to determine the direction and magnitude of effects
(Sage, 2016-05)This study used a genetically controlled design to examine the direction and the magnitude of effects in the over-time associations between perceived relationship quality with mothers and adolescent maladjustment (i.e., depressive symptoms and ... -
Associations between peer victimization and suicidal ideation and suicide attempt during adolescence : results from a prospective population-based birth cohort
(Elsevier, 2015-11-26)Objective:To test whether adolescents who are victim-ized by peers are at heightened risk for suicidal ideationand suicide attempt, using both cross-sectional andprospective investigations.Method:Participants are from the Quebec LongitudinalStudy ... -
Birth size and gestational age in opposite-sex twins as compared to same-sex twins : an individualbased pooled analysis of 21 cohorts
(Nature research, 2018-04-19)It is well established that boys are born heavier and longer than girls, but it remains unclear whether birth size in twins is affected by the sex of their co-twin. We conducted an individual-based pooled analysis of 21 twin cohorts in 15 countries ... -
Cannabis use, depression and suicidal ideation in adolescence : direction of associations in a population based cohort
(Elsevier, 2020-05-29)Background To clarify the direction of the association between frequency of cannabis use, depressive symptoms and suicidal ideation from 15 to 20 years using cross-lagged analyses. Method We included 1606 adolescents from the province of Québec ... -
Complex effects of dyslexia risk factors account for ADHD-traits : evidence from two independent samples
(Wiley, 2016-08-08)Background: Developmental dyslexia (DD) and attention deficit/hyperactivity disorder (ADHD) are among the most common neurodevelopmental disorders, whose etiology involves multiple risk factors. DD and ADHD co-occur in the same individuals much more ... -
Contagion of anxiety symptoms among adolescent siblings : a twin study
(Wiley, 2017-03)This study examined whether social contagion of anxiety symptoms is present between siblings during early adolescence and whether this process is moderated by sex, relationship quality, and zygosity. Based on 634 monozygotic and dizygotic twins (336 ... -
Contribution of genes and environment to the longitudinal association between childhood impulsive‐aggression and suicidality in adolescence
(Wiley, 2019-11-28)Background Population‐based and family studies showed that impulsive‐aggression predicts suicidality; however, the underlying etiological nature of this association is poorly understood. The objective was to determine the contribution of genes and ... -
The dark side of friends : a genetically informed study of victimization within early adolescents’ friendships
(Taylor & Francis, 2015)Using a genetically informed twin design, this study examined (a) whether, in line with gene–environment correlation (rGE), a genetic disposition for anxiety puts children at risk of being victimized by a close friend or by other peers, and (b) whether, ... -
Does cortisol moderate the environmental association between peer victimization and depression symptoms? a genetically informed twin study
(Elsevier, 2017-10-31)Many youths who are victimized by peers suffer from depression symptoms. However, not all bullying victims become depressed and individuals’ biological sensitivity may play an important moderating role in this regard. In line with this notion, peer ... -
Does shyness interact with peer group affiliation in predicting substance use in adolescence?
(American Psychological Association, 2017-11-20)Cigarette use and binge drinking are risky behaviors emerging during adolescence. Although many beneficial factors are well documented, studies linking shyness to substance use are somehow conflicting, which may be due to the contribution of moderators. ... -
Early childhood factors associated with peer victimization trajectories from 6 to 17 years of age
(American Academy of Pediatrics, 2020)OBJECTIVES: To describe (1) the developmental trajectories of peer victimization from 6 to 17 years of age and (2) the early childhood behaviors and family characteristics associated with the trajectories. METHODS: We used data from 1760 children ... -
Early warm-rewarding parenting moderates the genetic contributions to callous-unemotional traits in childhood
Warm-rewarding genetic callous-unemotional
(Wiley, 2018-04-23)Background Previous gene–environment interaction studies of CU traits have relied on the candidate gene approach, which does not account for the entire genetic load of complex phenotypes. Moreover, these studies have not examined the role of positive ... -
Environmental influence of problematic social relationships on adolescents' daily cortisol secretion : a monozygotic twin-difference study
(Cambridge University Press, 2017-02)BACKGROUND: This study investigated the potential environmental effects of peer victimization and the quality of relationships with parents and friends on diurnal cortisol secretion in mid-adolescence. METHOD: This study used the monozygotic ... -
Evidence of a unique and common genetic etiology between the CAR and the remaining part of the diurnal cycle : a study of 14 year-old twins
(Elsevier, 2016-04)Introduction By and large, studies have reported moderate contributions of genetic factors to cortisol secreted in the early morning and even smaller estimates later in the day. In contrast, the cortisol awakening response (CAR) has shown much ... -
The expression of genetic risk for aggressive and non-aggressive antisocial behavior is moderated by peer group
(Springer, 2015-07)Numerous studies have shown that aggressive and non-aggressive antisocial behaviors are important precursors of later adjustment problems. There is also strong empirical evidence that both types of antisocial behavior are partially influenced by genetic ... -
Friendship experiences and anxiety among children : a genetically informed study
(Taylor & Francis, 2016)This study examined (a) whether, in line with a gene-environment correlation (rGE), a genetic disposition for anxiety puts children at risk of having anxious friends or having no reciprocal friends; (b) to what extent these friendship experiences are ... -
Friendships and deviancy training in young children
(Emerald, 2015-04-13)Purpose The purpose of this study was to test a new approach to deviancy training, that is, the shaping and reinforcing of disruptive behaviors in social interaction, which considers not only reinforcement, but also the modeling processes involved, ... -
Gene-environment correlation linking aggression and peer victimization : do classroom behavioral norms matter?
(Springer, 2015)Using a genetically informed design based on 197 Monozygotic and Dizygotic twin pairs assessed in grade 4, this study examined 1) whether, in line with a gene-environment correlation (rGE), a genetic disposition for physical aggression or relational ... -
The genetic and environmental etiology of the association between vocabulary and syntax in first grade
Etiology of vocabulary and syntax
(Taylor & Francis, 2018-03-09)This study examined the genetic and environmental etiology of vocabulary, syntax, and their association in first graders. French-speaking same-sex twins (N = 555) completed two vocabulary tests, and two scores of syntax were calculated from their ...
