This combined text and manual presents the basic educational viewpoint of the Gesell Institute, that children should be entered in school (and consequently grouped and promoted) on the basis of their developmental or behavioral age, not on the basis of their chronological age or IQ. The introduction describes the research in which the Institute…

This document is Part I of a two-part project whose goal was to identify the sequential development of child behavior from birth through age seven and to identify the materials which could be used to strengthen or initiate a behavioral facet. Research on child development was collected, organized, and analyzed for correlative events pertinent to…