The psychology of early growth, including Norms of infant behavior and a method of genetic analysis / by Arnold Gesell ... and Helen Thompson ... assisted by Catherine Strunk Amatruda.

New York : The Macmillan company, 1938.

ix, 290 pages including illustrations, tables, diagrams, forms : plates ; 26 x 20 cm

"The present volume represents a continuation and elaboration of the earlier studies [The mental growth of the preschool child] and is based upon ten years of subsequent collaborative research in the Yale Clinic of child development. The research has received partial report in two further publications, namely, An atlas of infant behavior ... and Infant behavior: its genesis and growth. The present volume deals particularly with biometric aspects of the normative investigation"--Pref

"Bibliography of Yale films of child development"--p. 238-240.