Posttraining expert case consultation is a key component of transporting and scaling up evidence-based treatments, and hopefully retaining their efficacy. Live practice observation and in vivo coaching is a strategy used in academic training environments, but is rarely feasible in field settings. Post hoc telephone consultation is a substitute strategy but does not approximate many aspects of live coaching. Live video technology offers a closer approximation but has not yet been sufficiently tested. Using a roll-out experimental design, this study compared client outcomes across doses of two posttraining expert consultation strategies-standard telephone consultation and live video coaching. The study was conducted during a two-state, 30-agency implementation involving 80 therapists and 330 cases receiving Parent-Child Interaction Therapy (PCIT). Child behavior problems fell from well above to below clinical cutoff values, with about a 1 standard deviation improvement in 14 sessions, which is within the range reported in laboratory efficacy trials. Symptom improvement was augmented by increased therapist dose of live video consultations. Phone consultation dose had no association with client level outcomes. PCIT benefits appear to be retained when the model is transported at scale into the field, and live video consultation appeared to offer small but significant advantages over telephone consultation as one element of an overall transport strategy.
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