Correlation between the Bayley‐III at 3 years and the Wechsler Intelligence Scale for Children, Fourth Edition, at 6 years

Abstract

Background Although several studies have investigated the association between Bayley‐III results in infancy and future intellectual development, conclusions remain unclear. We used the Bayley Scales of Infant and Toddler Development, Third Edition (Bayley‐III) at 3 years of age and the Wechsler Intelligence Scale for Children, Fourth Edition (WISC‐IV) at 6 years of age to assess the neurodevelopment of very low birthweight infants. Methods We investigated the correlation between Bayley‐III's cognitive, language, and motor scores and the WISC‐IV's Full‐Scale Intelligence Quotient (FSIQ). We also determined the optimal cut‐off value of Bayley‐III to enter the normal development zone (FSIQ ≥ 85). Results We found a strong correlation between the Bayley‐III and the FSIQ. Optimal cut‐off scores of the Bayley‐III to enter the normal range on the WISC‐IV were 95 for the cognitive scale, 89 for the language scale, and 91 for the motor development scale. Conclusions Although Bayley‐III scores strongly correlated with the WISC‐IV FSIQ, the lower normal limit of 85 on the Bayley‐III suggests a potential overestimation of development in children who were VLBW infants.

Effect of a Mediterranean Diet or Mindfulness-Based Stress Reduction During Pregnancy on Child Neurodevelopment

“…Previous studies report that the cognitive domain results in early infancy were associated with future intelligence quotient, 55 , 56 , 57 which gives clinical importance to our findings. Actually, in accordance with other studies, a Bayley-III mean group difference greater than 5 points could be regarded as clinically important.…”

Lesion Extent Negatively Impacts Intellectual Skills in Pediatric Focal Epilepsy

“…However, in contrast to previous studies, 12 our findings are based on a standardized evaluation of cognitive development rather than a global clinical impression, with a strong correlation between the Bayley Scales of Infant Development and Wechsler test results. 36 Third, our study did not assess the potential adverse effects of ASMs on cognitive development. 54 Nevertheless, previous observations of the role of ASMs have been contradictory, with some studies indicating that ASM side effects are inconsequential compared with epilepsy-related predictors 55 and other studies finding a negative impact of ASMs on cognitive development.…”

“…The comparability of these tests is supported by studies reporting their high correlation and validity. [36][37][38] We considered the FSIQ from the Wechsler Scales, the cognitive domain score from the Bayley Scales, and the SON-IQ from the SON-R test. We classified the intellectual skills of the children tested as above the average range (>115 IQ/DQ), within the average range (85 to 115 IQ/ DQ), mildly impaired (70 to 84 IQ/DQ), moderately impaired (50 to 69 IQ/DQ), or severely impaired (<55 IQ/DQ).…”

Quality of child development scales. A systematic review

“…Regarding the predictive validity of the Bayley-III, correlations were found to vary for all ages and tests/subtests (Krogh & Vaever, 2019a). Furthermore, this validity also varied for other scales such as the Wechsler Preschool and Primary Scale of Intelligence, Second Edition (WPPSI-II; Bode et al, 2014); the Wechsler Intelligence Scale for Children, Fourth Edition (WISC-IV; Månsson et al 2019;Nishijima et al 2021); Peabody-2 (Lin et al, 2020); and the Movement Assessment Battery for Children, Second Edition (MABC 2; Spittle et al 2013). Practitioners should be cautious about attributing higher Bayley-III scores to changes in direct attention.…”