父母感知的家庭压力对儿童问题行为的影响：父母心理攻击和儿童应激下皮质醇反应的中介作用

儿童问题行为受到环境与个体因素的协同影响。研究以北京150名五、六年级儿童及其家长为被试，探究心理攻击和应激下皮质醇反应在父母感知的家庭压力与儿童问题行为间的中介作用。采用儿童版特里尔社会应激测试测量儿童应激下皮质醇反应，并由家长报告感知的家庭压力、对儿童的心理攻击及儿童的问题行为。结果发现：(1)父母感知的家庭压力可正向预测儿童问题行为；(2)心理攻击在父母感知的家庭压力与儿童问题行为间起中介作用；(3)心理攻击和儿童应激下皮质醇反应在父母感知的家庭压力与儿童问题行为之间起链式中介作用。研究揭示了父母感知压力对儿童问题行为影响的心理和生理机制，从父母和儿童角度为减少儿童问题行为提供了参考。

The Effect of Parental Perceived Family Stress on Child Problem Behaviors: The Mediating Roles of Parental Psychological Aggression and Child Cortisol Response to Stress

Problem behaviors is related to a series of individual and contextual factors. A sample of 150 Chinese children and their parents participated in the present study. Trier Social Stress Test for Children (TSST-C) was conducted to induce cortisol stress response among children. Parents reported perceived family stress, parent-child psychological aggression, and their children's problem behaviors. Results revealed that:(1) parental perceived family stress positively predicted child problem behaviors; (2) psychological aggression mediated the relation between family stress and child problem behaviors; (3) psychological aggression and cortisol response sequentially mediated the relation between family stress and child problem behaviors. The present study revealed the psychological and physiological mechanisms through which family stress was associated with child problem behaviors, and may yield critical implications for targeting intervention approaches in terms of child psychopathology.