2 Young Children Playing with Balls (IMAGE) U.S. National Science Foundation Caption One- to four-year-olds, who heard and then spoke 45 additional spatial words that described sizes and shapes saw, on average, a 23 percent increase in their scores on a non-verbal assessment of spatial thinking Credit © 2011 Jupiter Images Corporation Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.