A new study has explored the link between infant birthweight, gestational age and future cognitive problems.
, scientists have shown how the relative birthweight of infants associates with cognitive performance at five years of age. The results broadly indicate that a large birthweight is good for IQ, but this is relative toPrevious studies had shown that a combination of how heavy a baby is at birth and how early it is born relates to later cognitive abilities, but this study investigates whether the relative birthweight , might also be important for later cognitive performance.
Lead Author Robert Eves, who is co-affiliated with Bielefeld University and the University of Warwick, said,"When a baby is born their birthweight percentile is often calculated, which is their birthweight relative to their gestational age. Traditionally, researchers have used above or below the 10th percentile as a potential risk factor for long-term developmental issues."
"We find no evidence that there is anything particularly unique about the 10th percentile. We find that increasing birthweight percentiles are associated with increased cognitive scores, from the first percentile until the 69th percentile. However, from this point, there is a plateau so there were no significant cognitive differences between infants born at the 69th, 79th, or 89th percentile for example.
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