Toward effective quality assurance in evidence-based practice: links between expert consultation, therapist fidelity, and child outcomes.

This study validated a measure of expert clinical consultation and examined the association between consultation, therapist adherence, and youth outcomes in community-based settings. Consultant adherence to the multisystemic therapy (MST) consultation protocol was assessed through therapist reports, and therapist adherence to MST principles was assessed through caregiver reports in 2 samples of families (N1 = 178, N2 = 274) and therapists (N1 = 87, N2 = 162). Caregiver reports of youth behavior and functioning were obtained in the second sample pre- and posttreatment. Random effects regression models demonstrated associations between consultant behavior, therapist adherence, and posttreatment youth behavior problems and functioning. Instrumental aspects of consultation supported therapist adherence and improved youth outcomes; supportive aspects of consultation were negatively associated with adherence and outcomes. These findings suggest the availability to clinicians of expert consultation can impact clinician fidelity to a treatment model and child outcomes.