In this podcast episode, Shannon Hill, Nissa Van Etten, and Jordan Fries interview Thomas Frazier about outcome measurement in behavioral intervention services. Using Frazier and colleagues’ work on adaptive social communication measurement as a foundation, the discussion explores why many legacy assessments were not designed for the ABA context or for individuals with autism and developmental disabilities. The presenters distinguish between moment-to-moment ABA data collection and periodic outcome assessment, highlighting how periodic measures support long-term progress tracking, clinical decision-making, and accountability to funders. The episode emphasizes the complementary roles of norm-referenced and skill-based assessments, discusses constraints such as limited assessment authorizations, and underscores the importance of monitoring client and family quality of life. Ethical considerations related to caregiver-report measures, interpretation of sensitive results, and appropriate referrals are also addressed.