Relationships between diurnal adrenocortical activity, children’s attachment security and mothers’ attachment representations

This study investigated the relationship between diurnal adrenocortical activity and attachment quality (children’s secure base behaviours and mothers’ attachment representations). Forty-two children ranging in age from 18 to 26 months of age and their mothers participated in this study. Children and mothers’ saliva samples were collected on two consecutive days (Saturday and Sunday), three times per day: awakening; 20m after awakening; bedtime. No significant relationships were found involving mothers’ attachment representations. However, significant negative correlations between children and mothers’ bedtime cortisol levels and children’s attachment security were found.