Browsing Faculté des arts et des sciences – École de psychoéducation – Travaux et publications by Author "Ouellet-Morin, Isabelle"
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Does cortisol moderate the environmental association between peer victimization and depression symptoms? a genetically informed twin study
Brendgen, Mara; Ouellet-Morin, Isabelle; Girard, Alain; Lupien, Sonia; Vitaro, Frank; Dionne, Ginette; Boivin, Michel (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 ... -
Environmental influence of problematic social relationships on adolescents' daily cortisol secretion : a monozygotic twin-difference study
Brendgen, Mara; Ouellet-Morin, Isabelle; Girard, Alain; Lupien, Sonia; Vitaro, Frank; Dionne, Ginette; Boivin, Michel (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
Ouellet-Morin, Isabelle; Brendgen, Mara; Girard, Alain; Dionne, Ginette; Lupien, Sonia; Vitaro, Frank; Boivin, Michel (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 ... -
Validation of an adapted procedure to collect hair for cortisol determination in adolescents
Adaption of the collection protocol for hair cortisol determination
Ouellet-Morin, Isabelle; Laurin, Mélissa; Robitaille, Marie-Pier; Brendgen, Mara; Lupien, Sonia; Boivin, Michel; Vitaro, Frank (Elsevier, 2016-08)Introduction In the last decades, cortisol has been extensively studied in association to early exposure to adversity as well as in the etiology of a number of physical and mental problems. While saliva and blood samples allow the measurement of ...