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Abstract
Few studies focus on the neuropsychological and behavioural outcomes of preterm children at preschool age. This article reviews the most recent and relevant contributions on cognitive, neuropsychological and behavioural outcomes, and the neuroradiological findings in extremely and very preterm infants. In the first 2 years of life, cognitive impairment is common: it has an incidence of 30–40% and a higher prevalence than neuromotor and neurosensorial impairments. Recent studies report that even preterm infants with no major disabilities at preschool age perform more poorly than term peers in multiple neuropsychological domains, such as language, attention, memory, visuomotor and visuospatial processing and executive functions.
The incidence and severity of problems increase with decreasing gestational age. A delayed acquisition of neuropsychological functions and/or the occurrence of behavioural problems at preschool age are likely to be predictive of the high rate of cognitive deficits at school age and in adolescence. Neuropsychological functions across multiple developmental domains should be assessed longitudinally during routine follow-up checks.