Abstract
As part of a longitudinal study of high-risk preterm infants (birthweight less than 1500 g) and a low socioeconomic status (SES) comparison group of full-term infants, measures of information processing were obtained at 1 year : visual and tactual recognition memory, cross-modal transfer, and object permanence. Of these, cross-modal transfer was the most strongly related to later intelligence, correlating with outcome at 1.5, 2, 3, 4, and 5 years for preterms and from 3-5 years for full-terms (rs=44 to 54) ; relations with outcome were independent of SES, maternal education, medical risk, and early Bayley scores. When this 1-year measure of cross-modal transfer was combined with 7-month visual recognition memory, 35%-51% of the variance in 3-,4-, and 5-year IQ was explained
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