CURRENT RESEARCH ON THE SYNDROME OF AUTISM
A Comparison of Haloperidol and Behavior Therapy and Their Interaction in Autistic Children

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Abstract

Haloperidol and behavior therapy, and the interaction of the two treatments were critically assessed with respect to their effects on symptoms and language acquisition in 40 autistic children aged 2.6 to 7.2 years. The children were randomly assigned to four treatment groups in a factorial design. The study was placebo controlled and double-blind, using multiple independent raters who assessed treatment effects under three types of rating conditions. Haloperidol was found to be significantly superior to placebo in decreasing certain symptoms, depending on the age group. The combination of the two treatments was most effective in facilitating the acquisition of imitative speech. Optimal dosage of haloperidol ranged from 0.5 to 4.0 mg./day; the most common untoward effect was excessive sedation, which was clearly a function of dosage.

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    This study was supported, in part, by Public Health Service Grant MH 04665 from the National Institute of Mental Health. The authors wish to express their thanks to McNeil Laboratories for their generous gift and for the supply of medication; to Mrs. Kathleen Nash, R.N., Mrs. Sara Sol, Miss Dorothy Machida, and Miss Elle Steinhardt, R.N. for their devotion to the children and for their efforts in this study; to Mrs. Patricia Cleary (George Washington University Laboratory) for the statistical analysis of data; to Drs. Eugene I. Burdock and Anne S. Hardesty (Department of Psychiatry) for methodological suggestions.

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