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April 1958

Relation Between Fine and Gross Psychomotor Movement in Schizophrenia

Author Affiliations

New Orleans

From the Tulane University School of Medicine.

AMA Arch NeurPsych. 1958;79(4):427-433. doi:10.1001/archneurpsyc.1958.02340040071008

It has long been known that disorders of gross motility are common in schizophrenia. Although significant distortions of movement are by no means to be found in the behavior of all schizophrenic patients, they are observed regularly in a large proportion of cases, taking such familiar forms as posturing, over- and underactivity, stereotypy, and so on. It has also been known for some time, or at least strongly suspected, that defects in motility might also be observed in certain fine psychomotor actions by schizophrenic persons in their performance of such activities as the speed of initiating a response, the tempo of repetitive response, the dextrousness of response, etc. The extensive literature relating to the experimental demonstration of these phenomena has recently been reviewed by King,3,4 and new data have been added further confirming their existence. An obvious question arises from this body of information which has not yet been