Parental corporal punishment and child anxiety in China: The moderating role of HPA-axis Activity

Although negative associations between parental corporal punishment and child anxiety are well-documented, the potential moderators of these associations are not well characterized. Contemporary developmental perspectives suggest that biological vulnerability may influence the degree to which the environment affects child development. Thus, this study investigated the moderating role of one potential physiological marker, HPA-axis activity, in the relations between both maternal and paternal corporal punishment and child anxiety in China. Participants were 158 elementary school-age children and both their parents in China. Parental corporal punishment was measured based on children's self-report, maternal report, and paternal report. Children self-reported their anxiety and undertook saliva sampling during 3 consecutive school days at 9:00 a.m. and 4:00 p.m. in their classroom. Hierarchical regressions were calculated to examine the moderating role of HPA-axis activity in the link between corporal punishment and child anxiety. Both maternal and paternal corporal punishment were positively associated with child anxiety. Low morning and afternoon basal cortisol exacerbated the relations between paternal corporal punishment and child anxiety, and flatter diurnal rhythm exacerbated the relations between both paternal and maternal corporal punishment and child anxiety. Causal conclusions cannot be drawn based on cross-sectional research design. The findings provide partial support for the diathesis-stress model and highlight the importance of considering how the biological vulnerability may interact with parenting to influence child adjustment.