Cortisol Levels and Conduct Disorder in Adolescent Mothers
Référence bibliographique 
Azar, Rima, Zoccolillo, Mark, Paquette, Daniel, Quiros, Elsa, Baltzer, Franziska et Tremblay, Richard E. 2004. «Cortisol Levels and Conduct Disorder in Adolescent Mothers ». Journal of the American Academy of Child and Adolescent Psychiatry, vol. 43, no 4, p. 461-468.
Intentions : « This longitudinal study aimed to examine the association between cortisol levels and CD [Conduct disorder] in adolescent mothers. » (p. 461) « The current study aimed to longitudinally examine the same phenomenon, using salivary cortisol levels, in a sample (n = 228) of adolescent mothers who participated in a study (Paquette and Morrisson, 1998) of the development of infants in high-risk families. » (p. 462)
Questions/Hypothèses : « We hypothesized that at 4 and 9 months postpartum, adolescent mothers with CD would have lower levels of salivary cortisol compared to a group of participants without CD. » (p. 462)
Échantillon/Matériau : - « The sample consisted of 228 adolescent mothers who participated in a 3-year longitudinal study (Paquette and Morrisson, 1998) of teenage mothers and their children. » (p. 462); - Saliva samples; - Données de la base de données longitudinales de « La Mère Veille » provenant de ces outils. Instruments : - NIHM Diagnostic Interview Schedule (C-DIS), version informatisée; - Edinburgh Postnatal Depression Scale (EDPS); - Parenting Stress Index (PSI).
Type de traitement des données : Analyse statistique
« Past research has shown that low levels of cortisol were associated with CD, particularly with its aggressive symptoms. » (p. 461) This study is about the association between cortisol levels and conduct disorder in adolescent mothers. « Results did not confirm the hypothesis. Lower cortisol levels were not significantly associated with a CD diagnosis, the number of CD symptoms, or aggressive symptoms. [...] Despite valid measures and strong statistical power, this study failed to find an association between cortisol levels and CD in a sample of adolescent mothers. The results may have been influenced by the fact that participants were 4 and 9 months postpartum and by comparisons of mothers with CD to mothers living in stressful circumstances. » (p. 461)