Title:	Out of the Hands of Babes.
Authors:	Pritchett, Malika1
Source:	Behavior Analysis Digest International; Fall2008, Vol. 20 Issue 3, p11-12, 2p

-Small study, showed that babies taught the sign for "up", and once the sign was learned, then were allowed to cry until they signed what they wanted learned the sign quickly and cried less.