Negative affect mediates the relationship between the Cortisol Awakening Response and Conduct Problems in boys
This thesis begins with two chapters which discuss conduct problems and stress regulation, with a focus on the hypothalamic-pituitary-adrenal (HPA) axis. Subsequently, the literature is reviewed and we see that with regards to the relationship between conduct problems and HPA axis activity, the findings are inconsistent. It is possible that methodological considerations underlie the inconsistency found in the literature and the following chapter is concerned with methodology. This is followed by the featured study presented in this thesis which examines the link between the cortisol awakening response (CAR), which is considered a good indicator of HPA axis functioning, and conduct problems in children. Further, negative affect has been linked to both conduct problems and the Cortisol Awakening Response (CAR). Thus it was hypothesized that negative affect acts as a mediator in the cortisol-conduct problems relationship. The featured study found that a reduced CAR was associated with both negative affect and conduct problems, however only in boys and not in girls. Further, the mediation hypothesis was supported in boys. The last chapter in this thesis discusses the implications of this mediation finding for theories of conduct problems as well as proposing some psychobiological mechanisms to explain the sex differences found.
Cortisol Awakening Response Conduct Problems Negative Affect Gender Differences CAR Stress Regulation Emotion Hormones and Behaviour Sex Differences Aggression