Am J Psychiatry 1977; 134:759-762
Copyright © 1977 by American Psychiatric Association
Clinical research techniques in tardive dyskinesia
WE Fann, JR Stafford, RL Malone, JD Frost Jr and BW Richman
The authors have developed standardized assessment and control techniques
designed to provide objective measures of tardive dyskinesia in patients
progressing through an experimental treatment program. Standardized
videotaping is carried out and blind ratings on the Abnormal Involuntary
Movement Scale are made by a team of psychiatrists and neurologists. Other
assessments include several measurements of vocal function and a
quantitative acceleration profile standardized on normal subjects. Such
measures allow quantifiable determination of response to drug treatment and
may provide clues to the etiology and definition of the dyskinetic
syndrome.