Abstract
An language intervention program was designed for a four year old delayed language boy with autistic tendency. Although the boy had neither any comprehension nor any expression of words except immediate echolalia at the initial assessment, he progressed relatively rapidly through the intervention program, focused on language comprehension of early words to 3-word-sentences, and also facilitated his communicative behavior. On the other hand, it was observed his language acquisition process was deviated somewhat from normal one. For example, verbal comprehension of colour names and number words was acquired through written materials. Furthermore, a number of problems such as the difficulty of answering to questions and poor development of language function still remained. Taking these results into consideration, the language intervention program and the characteristics of the language acquisition process of the boy are discussed.
