Sign language is a language you express by using your hands and face instead of spoken words. It’s most commonly used by people in the Deaf community. How many types of sign language are there? There ...

Many new parents can relate to the frustration of trying to figure out the exact needs of their baby. Are they hungry? Do they need changed? Whether it's a piercing wail to have their diaper checked, ...

The research reported here was supported by the Institute of Education Sciences, U.S. Department of Education, through Grant R324A170086 to the University of Tennessee. The opinions expressed are ...