Bayley III in Vietnamese children: lessons for cross-cultural comparisons.

There are limited psychometric reports of construct validity following adaptation of the Bayley Scales of Infant and Toddler Development 3 edition (Bayley III). This paper aims to demonstrate a process of assessing reliability, validity, and gender equivalence of the adapted tool for Vietnamese children. We evaluated cognitive, fine motor, gross motor, expressive communication and receptive communication subtests of the adapted tool in 267 healthy urban Vietnamese children.