Background: Although the importance of caregiver engagement in a child's psychological treatment is well established within outpatient treatment settings, the question remains whether these findings can be generalized to more intensive treatment settings where caregiver engagement may be more challenging to facilitate. Design: A correlational, multi-informant design was used to collect data by caregiver self-report and therapist-report from a sample of 64 caregivers of youth referred for partial hospitalization.