Research efforts that combine longitudinal and cross-sectional studies are making significant contributions to our understanding of motor development. While most measures of motor development provide a description of the present status of the child, there are a few process-oriented tests that provide information about the developmental progression…

This interim report of the Yale Project describes the progress made on the nutrition and growth study of Tunisian children from September 1, 1972 through February 28, 1973. A major part of the report is devoted to the organizational and data collection problems of the longitudinal study, discussed under the following categories: biomedics,…

This paper describes the collecting of normative data concerning the development of East Indian babies and analyzes the information in terms of: (1) the influences of socioeconomic class; (2) urban-rural environmental differences; (3) sex differences; and (4) comparisons with children from the United States, Israel, and the United Kingdom. The…

Used kinematic measures to compare relative contributions of growing body dimensions, age, and walking experience in walking skill development in 9- to 17-month-olds, kindergartners, and college students. Found that with increased age, size, and experience, children's steps became longer, narrower, straighter, and more consistent, reflecting a…