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Article
April 24, 1926

A COMPARATIVE METHOD FOR DEMONSTRATION OF NORMAL DEVELOPMENT IN INFANCY

JAMA. 1926;86(17):1277-1281. doi:10.1001/jama.1926.02670430019008
Abstract

Is it desirable for medical students to become more systematically familiar with the normal? In connection with the general course in pediatrics, given at the Yale University School of Medicine, I recently had opportunity to test the feasibility of demonstrating to junior students the developmental characteristics of normal infants. The present paper is a stenographic report of one session devoted to the clinical demonstration of two pairs of normal infants, respectively 4 and 6 months, and 6 and 9 months of age.

This session was followed by a clinical demonstration of mental deficiency in infant subjects. It was our purpose, in the comparative examinations, to clarify the nature of developmental retardation by a preliminary presentation of normal characteristics; and also to illustrate the principles of developmental diagnosis.

From the standpoint of developmental diagnosis we are primarily interested in all those forms of behavior, mediated by a nervous system, which are

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