Implementation assessment of widely used but understudied prevention programs: An illustration from the Common Sense Parenting trial

• We report fidelity assessment in the test of a widely used but understudied program.
• Workshop leaders had high adherence to the content and goal times of the curriculum.
• Workshop leaders delivered the intervention with high quality.
• Participant satisfaction ratings for the workshops were high.
• Positive findings may be due to detailed intervention manuals and ongoing training.

Common Sense Parenting is a parent-training program that is widely disseminated, has promising preliminary support, and is being tested in a randomized controlled trial that targets lower-income, urban 8th-grade students and their families (recruited in two annual cohorts) to improve the transition to high school. The workshop-based program is being tested in both standard 6-session (CSP) and modified 8-session (CSP Plus) formats; CSP Plus adds adolescent-skills training activities. To offer a comprehensive picture of implementation outcomes in the CSP trial, we describe the tools used to assess program adherence, quality of delivery, program dosage, and participant satisfaction, and report the implementation data collected during the trial. Results indicated that workshop leaders had high adherence to the program content and manual-stated goal times of the CSP/CSP Plus curriculum and delivered the intervention with high quality. The majority of intervention families attended some or all of the sessions. Participant satisfaction ratings for the workshops were high. There were no significant cohort differences for adherence, quality and dosage; however, there were significant cohort improvements for participant satisfaction. Positive fidelity results may be due to the availability of detailed workshop leader guides, in addition to ongoing training and supervision, which included performance-based feedback.