CHICAGO (Reuters) – Babies who use many gestures to communicate when they are 14 months-old have much larger vocabularies when they start school than those who don't, U.S. researchers said on Thursday. They said babies with wealthier, better-educated parents tend to gesture more and this may help explain why some children from low-income families fare less well in school. "When children enter school, there is a large socioeconomic gap in their vocabularies," said the University of Chicago's Meredith Rowe, whose study appears in the journal Science. Gestures could help explain the difference, Rowe told the American Association for the Advancement...