To investigate the effects of very low birth weight (VLBW, <1500
g) on the development of neuropsychological skills, we assessed 67
children with birth weight <750 g, 64 with birth weight
750–1499 g, and 67 term-born controls. Growth modeling of raw
scores from mean ages 7–14 years revealed persistent VLBW
sequelae. Even when adjusting for IQ, the <750 g group scored more
poorly than the term-born group on measures of language processing,
verbal list learning, and perceptual–motor and organizational
abilities. This group also made slower age-related progress than the
control group on tests of perceptual-motor and executive functions.
Environmental factors moderated group differences in change on other
cognitive measures. These results revealed further evidence for slower
skill development in both VLBW groups relative to controls, as well
as“catch-up” growth in the 750–1499 g group on some
measures. The findings suggest age-related changes in the cognitive
sequelae of VLBW that depend on the skill assessed, the degree of VLBW,
and environmental factors. (JINS, 2004, 10,
149–163.)