SummaryThe results of sessions 14 to 30 using the back projection of kaleidoscopic patterns to elicit verbalizations in David, a 4 year‐old boy diagnosed as autistic, were, outlined. It was suggested that they showed the long term durability of the kaleidoscopes distracting and reinforcing properties and its use in fostering the growth of attention span.In overview it was suggested that the results of this work highlight the possibility that one of the roles of babbling in a child's acquisition of language is in the development of the natural rhythms of a normal speech for