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Date of Award


Document Type


Degree Name

Master of Arts (M.A.)



First Advisor

Kenneth Perrin

First Committee Member

Howard L. Runion

Second Committee Member

Carl C. Riedesel


Statement of the problem. The present study was designed to answer the question: What is the effect of tranquilizers, specifically phenothiazines , on diadochokinetic movement in a geriatric population? It was hypothesized that patients exhibiting overt effects of long term phenothiazine therapy (dyskinesia ) would show a reduced rate of diadochokinetic movement when compared with an age-matched group exhibiting no such symptoms and with no history of having taken tranquilizers . Furthermore, if this diadochokinetic movement were reduced, there would be a greater incidence of defective speech in this patient group .





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