\r\nThis is the first and only book to provide mental health professionals and students with state-of-the-art interpretive, scoring, and administrative guidelines for the Bayley Scales. These scales measure the mental, motor, and behavioral development of infants, and assess children (1-42 months) with unusual developmental delays. This book offers \u0027one-stop shopping\u0027 for anyone who wants to learn how to interpret, administer, and understand the Bayley Scales of Infant Development II.