The language behavior of nine retarded children (ranging from mild to borderline retardation) was analyzed before and after a six-week summer-camp-type activity to test the hypothesis that rate of verbal behavior could be increased through a systematic program in which the children would experience an environmental event and concurrently verbalize the experience. The results indicate that: (1) total number of words, (2) total number of sentences, (3) sentence length and (4) total number of nouns expressed increased significantly. Also, the immediate gains were still significant one year later.
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