Now enhanced and updated based on extensive user feedback and a new, unparalleled research sample of more than 12,000 children, ASQ-3 is the most accurate, cost-effective, and parent-friendly way to identify children from birth to 5 years with developmental delays. Absolutely essential to using ASQ-3, this revised and redesigned guide provides step-by-step guidance on administering and scoring the questionnaires, setting up a screening system, working with families effectively, and using ASQ-3 across a wide range of settings. Proven accurate by new research: ASQ-3 is highly reliable and valid with excellent sensitivity (.86) and specificity (.85). It allows for fast and easy scoring, as 2-3 minutes is all it takes to score the questionnaires. The `anytime' scoring permits accurate child-screening from 1-66 months of age. The ASQ-3 also educates families, and parents will love how ASQ-3 helps them learn about their child's development and skills. A one-time purchase, a single site can photocopy or print questionnaires as needed.