Eight‐year‐old very and extremely preterm children showed more difficulties in performance intelligence than verbal intelligence

Aim This study determined possible discrepancies between verbal IQ and performance IQ in 8‐year‐old very preterm (VPT) and extremely preterm (EPT) children, and examined associations between verbal IQ and performance IQ, and sociodemographic factors, perinatal factors, early cognitive outcomes and a...

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Bibliographic Details
Published in:Acta Paediatrica 2020-06, Vol.109 (6), p.1175-1183
Main Authors: Veen, Sarit, Wassenaer‐Leemhuis, Aleid G., Oosterlaan, Jaap, Kaam, Anton H., Aarnoudse‐Moens, Cornelieke S. H.
Format: Article
Language:English
Subjects:
Age
Child
child development
Child, Preschool
Children
Cognitive ability
Gestational age
Health risk assessment
Humans
Infant, Extremely Premature
Infant, Newborn
Intelligence
Intelligence Tests
IQ profiles
Mathematics
prematurity
Prospective Studies
Reading
Regular
school achievement
school age
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Summary:Aim This study determined possible discrepancies between verbal IQ and performance IQ in 8‐year‐old very preterm (VPT) and extremely preterm (EPT) children, and examined associations between verbal IQ and performance IQ, and sociodemographic factors, perinatal factors, early cognitive outcomes and also with school achievement scores. Methods This prospective cohort study included 120 eight‐year‐old VPT/EPT children. Cognitive development was assessed at the ages of 2, 5 and 8 years. Eight years’ school achievement results in arithmetic, reading and spelling were collected. Multiple regression analyses were performed to determine predictors of verbal IQ and performance IQ at the age of 8 years and to determine associations with school achievement scores. Results Mean performance IQ (89.8) was significantly lower than mean verbal IQ (99.4; Cohen's d = 0.59) at the age of 8 years. Gestational age (GA), small for GA status, and cognitive scores at the ages of 2 and 5 years significantly predicted verbal IQ and performance IQ at the age of 8 years. Performance IQ at age 8 years was an important predictor for arithmetic scores (β = 0.42). Conclusion Performance IQ was more strongly affected than verbal IQ in 8‐year‐old VPT/EPT children and was strongly related to mathematical difficulties.
ISSN:0803-5253
1651-2227
DOI:10.1111/apa.15095