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A series of research articles in the British Journal of Obstetrics and Gynecology suggest that light-to-moderate drinking during pregnancy (up to 8 drinks per week) does not affect IQ [1], intelligence, attention, and executive function [2], selective and sustained attention [3], or general intelligence [4] in 5-year-old children.
Children who grow up learning to speak two languages are better at switching between tasks than are children who learn to speak only one language, according to a study funded in part by the National Institutes of Health. However, the study also found that bilinguals are slower to acquire vocabulary than are monolinguals, because bilinguals must divide their time between two languages while monolinguals focus on only one.
