Bayley 4 Clinical Use and Interpretation provides clinicians with a guide to use, administration, scoring and interpretation of the Bayley Scales of Infant and Toddler Development, Fourth Edition. The book begins with why and how the Bayley 4 was revised. Separate chapters discuss the clinical use and interpretation of the cognitive, language, motor, social-emotional and adaptive scales, each with illustrative clinical cases. Recommendations are provided to aid clinicians in the efficiency of test administration, as well as how to interpret and integrate results within a diagnostic assessment format and in planning intervention. The clinical validity of the Bayley 4 is demonstrated for eight clinical groups. There is an overview of Autism Spectrum Disorder (ASD) with the Bayley 4 ASD Checklist, accommodations, and red flags indicative of abnormality. Additional chapters discuss digital administration and how to present feedback to caregivers.