2010 study by researchers from the University of Virginia and Vanderbilt on the number of words that 12- to 18-month-olds picked up from a best-selling instructional DVD for children.
2010 study from Harvard, Northwestern, and the University of California, Berkeley, researchers on the potential long-term effects of high-quality early education.
2010 study by Northwestern University on the potential larger effects of early music training on the brain's development, including linguistic abilities.