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Howe Developmental Center, 7600 W. 183rd Street, Tinley Park, Illinois 60477.
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The full text of this manuscript is deposited with the National Auxiliary Publications Service (NAPS). For copies, order NAPS Document #03009. Order from ASIS/NAPS Co., c/o Microfiche Publications, 440 Park Avenue South, New York, New York 10016. Remit with order for each copy $3.00 for microfiche or $6.50 for photocopies. Make checks payable to Microfiche Publications. This paper was based on a thesis submitted by the first author to the Graduate School of Southern Illinois University at Carbondale in partial fulfillment of the MA degree. This research was supported by a grant from the Southern Illinois University at Carbondale, Office of Research and Projects. The authors would like to thank the Curriculum Demonstration Center, Murphysboro, Illinois, and the A. L. Bowen Children's Center, Harrisburg, Illinois, for making subjects and facilities available.