Background

We leveraged a recent efficacy trial to investigate directionality between parent anxiety and child anxiety at posttreatment and 12-month follow-up, and the potential role of parent psychological control as a mediator. We also explored child age and sex as moderators.

Method

Two-hundred and fifty-four children were randomized to individual cognitive behavioral therapy (CBT) or to one of two CBT arms with parent involvement. Parent anxiety was not a treatment target in any of the three arms.

Results

Child anxiety at posttreatment was associated with parent anxiety and psychological control at 12-month follow-up, providing evidence of child-to-parent directionality. Parent anxiety at posttreatment was associated indirectly with child anxiety at 12-month follow-up through associations with parent psychological control, providing evidence of parent-to-child directionality. At posttreatment, parent psychological control contemporaneously mediated the relation between parent and child anxiety. Neither child age nor sex moderated any association.

Conclusions

Findings highlight the directional effects between child anxiety, parent anxiety, and psychological control from posttreatment to 12-month follow-up, even when parent anxiety is not a treatment target. Research and clinical implications are discussed, with an emphasis on enhancing durability following treatment effects.