“…Moreover, the lack of language production may create fur ther social and emotional isolation, due to the child's inability to communicate with others (Barrera, Lobato- Barrera, & Sulzer-Azaroff, 1980). If autistic children do not have functional language by the age of five, their personal development and chances for adjustment and integration into socie ty are greatly reduced (Eisenberg, 1958;Rutter, Greenfield, & Lockyer, 1967;Tew, 1978).…”