Browsing Faculté des arts et des sciences – École de psychoéducation – Travaux et publications by Subject "Twins"

Now showing items 1-7 of 7

  • Aggression can be contagious : longitudinal associations between proactive aggression and reactive aggression among young twins 

    Dickson, Daniel J.; Richmond, Ashley; Brendgen, Mara; Vitaro, Frank; Laursen, Brett; Dionne, Ginette; Boivin, Michel (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 sibling relationship quality and friendship quality in early adolescence : looking at the case of twins 

    Sibling relationship and friendship quality
    Bekkhus, Mona; Brendgen, Mara; Czajkowski, Nikolai O.; Vitaro, Frank (Cambridge University Press, 2016-04)
    Bidirectional pathways between twin relationship quality and friendship quality were investigated in a large longitudinal twin cohort. We examined negative and positive relationship features in 313 monozygotic (MZ) twins and 238 same-sex dizygotic (DZ) ...

  • The CODAT wins project : the current status and recent findings of collaborative project of development of anthropometrical measures in twins 

    Silventoinen, Karri; Brendgen, Mara; Vitaro, Frank (2019-07-31)
    The COllaborative project of Development of Anthropometrical measures in Twins (CODATwins) project is a large international collaborative effort to analyze individual-level phenotype data from twins in multiple cohorts from different environments. The ...

  • Contagion of anxiety symptoms among adolescent siblings : a twin study 

    Serra Poirier, Catherine; Brendgen, Mara; Vitaro, Frank; Dionne, Ginette; Boivin, Michel (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 ...

  • The expression of genetic risk for aggressive and non-aggressive antisocial behavior is moderated by peer group 

    Vitaro, Frank; Brendgren, Mara; Girard, Alain; Boivin, Michel; Dionne, Ginette; Tremblay, Richard Ernest (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 ...

  • The spread of substance use and delinquency between adolescent twins 

    The spread of twin substance use and delinquency
    Laursen, Brett; Hartl, Amy C.; Vitaro, Frank; Brendgen, Mara; Dionne, Ginette; Boivin, Michel (American Psychological Association, 2017-02)
    This investigation examines the spread of problem behaviors (substance use and delinquency) between twin siblings. A sample of 628 twins (151 male twin pairs and 163 female twin pairs) drawn from the Quebec Newborn Twin Study completed inventories ...

  • Twin classroom dilemma : to study together or separately? 

    White, Elaine K.; Garon-Carrier, Gabrielle; Tosto, Maria G.; Malykh, Sergey B.; Li, Xinying; Kiddle, Beata; Riglin, Lucy; Byrne, Brian; Dionne, Ginette; Brendgen, Mara; Vitaro, Frank; Tremblay, Richard Ernest; Boivin, Michel; Kovas, Yulia (American Psychological Association, 2018-07)
    There is little research to date on the academic implications of teaching twins in the same or different classroom. Consequently, it is not clear whether twin classroom separation is associated with positive or negative educational outcomes. As a result, ...