With federal backing by the National Institutes of Health (NIH), experts in developmental science and medical social science at Northwestern University have announced the creation of a new NIH Toolbox designed to provide a nationally standardized way to measure infants’ cognitive, language, motor, and social-emotional development from 16 days to 42 months of age. Called the NIH Baby Toolbox, the research-based resources are designed to support parents, medical professionals, communities, and others in identifying early developmental delays or difficulties in infants and toddlers that may lead to long-term challenges.