Gestures convey substantive information about a child's thoughts to ordinary listeners

The gestures that spontaneously occur in communicative contexts have been shown to offer in sight into a child's thoughts. The information gesture conveys about what is on a child's mind will,of course,only be accessible to a communication partner if that partner can interpret gesture. Adults were asked to observe as series of children who participated 'live' in a set of conservation tasks and gestured spontaneously while performing the tasks. Adults were able to glean substantive information from the children's gestures,information that was not found any where in their speech. 'Gesture-reading' did,however,have a cost - if gesture conveyed different information from speech,it hindered the listener's ability to identify the message in speech. Thus,ordinary listeners can and do extract information from a child's gestures,even gestures that are unedited and fleeting.