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Inter-rater reliability and agreement of the Bayley-4 in a multidisciplinary team

The Bayley Scales of Infant and Toddler Development are widely used to assess early development, yet evidence for inter-rater reliability in multidisciplinary contexts remains limited. This study evaluated inter-rater reliability and agreement of the newest edition, Bayley-4, at age two years when administered by a multidisciplinary allied health team within a longitudinal cohort.  

Citation:
Hall SE, Bora S, Alexander C, Hegermann M, ……. Salt A, Valentine J. Inter-rater reliability and agreement of the Bayley-4 in a multidisciplinary team. Pediatr Res. 2026.

Abstract:
The Bayley Scales of Infant and Toddler Development are widely used to assess early development, yet evidence for inter-rater reliability in multidisciplinary contexts remains limited. This study evaluated inter-rater reliability and agreement of the newest edition, Bayley-4, at age two years when administered by a multidisciplinary allied health team within a longitudinal cohort.