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 New Bayley Scales of Infant and Toddler Development, Fourth UK Edition (Bayley–4 UK)

New Bayley Scales of Infant and Toddler Development, Fourth UK Edition (Bayley–4 UK)


  • Nancy Bayley, PhD & Glen P. Aylward, PhD, ABPP

Assess infant and toddler development across five scales: Cognitive, Language, Motor, Social–Emotional, and Adaptive Behaviour.

Assessment of the Cognitive, Language, and Motor domains is accomplished by administering structured items to the child, and engaging the caregiver to support responses where appropriate.

The Social–Emotional and Adaptive Behaviour scales are administered via a caregiver questionnaire, which allows them to share their own observations of the child’s abilities.

  • User caregiver responses to support the scoring of certain items.
  • Determine the need for further in–depth assessment.
  • Administer one or more domain subtests individually.
  • Save significant time through shortened adaptive behaviour content from Vineland3.
  • The digital delivery option via Q–global combines the record form and administration manual, which allows greater flexibility, ease of use, and improved accuracy.
  • Content updates are made based on research and user feedback.
  • Updated normative data and clinical studies.

 Additional Product Information

  • Subtest level scaled scores, domain level composite scores, percentile ranks, confidence intervals, developmental age equivalents, and growth scale values
  • Administration is by Paper and pencil or Q–global
  • Scoring options are Manual or Q–global (web–based)

 Bayley–3 VS. Bayley–4   Bayley 4 Table

Informative video on the Benefits and Features of the Bayley–4




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