Saridjan, N.

cortisol infant study attachment children level stress cortisol levels sample rhythm family adversity difference child birth weight parent birth effect month reactivity response depression slope mother development sampling measure cortisol reactivity group behavior pregnancy weight reference relationship saliva parenting stress value parenting gunnar income model status income families cortisol rhythm classi family adversity generation r study saliva samples smoking attachment relationship hpa axis pattern attachment security stress reactivity fication indicator relation kirschbaum signi ficantly family income cortisol secretion generation disadvantage association rotterdam result morning cortisol levels signi lifetime depression psychobiology research spangler characteristic assessment cortisol rhythms cortisol stress reactivity insecure-resistant / hormones problem regulation