The Bayley Scales of Infant and Toddler Development (BSID) measures the development of infants and young children (aged 16 days-42 months). Conducted by trained examiners, BSID includes several developmental play tasks to assess cognitive, language, motor, social-emotional, and adaptive behavior development. BSID’s most recent fourth version was created in 2019.
Access and Use
Prices vary for different kits, please consult the publisher’s website.
BISD publisher (Pearson) customer support: +1 (800) 627-727
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