Children with high-functioning autism spectrum disorders (ASD) are at greater risk for developing psychiatric symptoms, particularly anxiety symptoms, compared to typically developing children and children with other developmental disabilities. Cognitive behavioral treatments (CBT) are frequently used in the general pediatric population with good success to reduce anxiety symptoms. Recently published studies have demonstrated significant reductions in anxiety symptoms for children with ASD following the delivery of modified CBT interventions. To enhance the portability and generalizability of these of these interventions, they must be tested outside the lab setting and the instruction and training protocols must be developed for these methods. This project will train outpatient clinicians (professionals in psychology) in a group CBT intervention for 8-14 year old children with high functioning ASD and clinical anxiety. This will enable assessment of the intervention in a real-world setting. The study will also evaluate three methods of training the clinicians: using a manual only, using a manual plus a 3-day workshop, and using a manual, the workshop, and bi-weekly supervised consultation. The efficacy of the different instruction methods will be evaluated based on the clinicians' acquisition of the intervention techniques and the reductions in anxiety symptoms for children with ASD.