To carry out his investigations, Bruner went to "the clutter of life at home," the child's own setting for learning, rather than observing children in a "contrived video laboratory." For Bruner, language is learned by using it. An central to its use are what he calls "formats," scriptlike interactions between mother and child--in short, play and games. What goes on in games as rudimentary as peekaboo or hide-and-seek can tell us much about language...