Which of the following instruments screen for developmental delays?

• A. Infant-Toddler Developmental Assessment
• B. The Bayley Scale for Infant Development
• C. Wechsler Intelligence Scale for Children
• D. Both Infant-Toddler Developmental Assessment and The Bayley Scale for Infant Development

Answer: (D)

Screening for developmental delays is about quick, broad checks that identify children who may need a full evaluation. The Infant-Toddler Developmental Assessment is designed for this purpose: it’s brief, covers multiple domains, and helps professionals flag potential delays so referrals or further assessments can be made. The Bayley Scale for Infant Development, while more in-depth, can also serve a screening role by identifying areas of concern and guiding next steps for evaluation and intervention. The Wechsler scales, on the other hand, are intended for older children and measure general cognitive ability, not suitable for screening developmental status in infants. Because both the early-screening tool and the more comprehensive infant development instrument contribute to identifying delays, the option that includes both instruments best fits the question.