An idiographic comparison of ACT focused on repetitive negative thinking versus non-directive therapy in child generalized anxiety

Trial with multiple baseline design (17 children, 8–12 years) compared RNT-focused ACT vs. non-directive therapy (NDT), in 3 videoconference sessions. ACT showed greater improvements in emotional symptoms and worry, reported by parents and children. Worry reduction mediated treatment effects. Findings support the utility of a brief, RNT-focused intervention for childhood GAD, outperforming a common control intervention like NDT.