The study of disturbances in the perceptual motor Gestalten involved in copying figures, as these disturbances appear in cases of organic brain disease associated with sensory aphasia, is of importance both to the theory of Gestalt psychology and to the understanding of some problems of optic agnosia in relation to sensory aphasia. An approach to the study of Gestalt psychology from the genetic, developmental and pathologic side has been made in my studies in mentally defective and schizophrenic persons1 and in the sidewalk drawings of children.2 A more extensive study of the development of Gestalten in children suggests itself and is now in preparation. This paper is the first in a series of studies of the disturbances of Gestalten in organic and toxic brain diseases and will be followed by similar reports on dementia paralytica, traumatic and alcoholic Korsakoff's syndrome and allied conditions.
Gestalt psychology of