Information is reported on the intellectual maturity of children 6 through 11 years of age in the United States as estimated from the 1963 Goodenough-Harris Drawing Test data obtained in the Health Examination Survey of 1963-1965. Consideration is limited in this first report of a series of reports on these test findings to age and sex differentials. In addition to information from the distributions of raw scores, standard score equivalents and percentile ranks of these raw scores as derived from this highly representative national sample are included. Mean scores were found to be lower than those from Harris' normative data throughout the age range on the Man and Woman Scales for both boys and girls. The differences were found to become progressively greater with age. The variability of scores within each year of age from the present study tends to be slightly less than that in Harris' normative groups, particularly on the drawings of a man by boys. Tables and appendices comprise more than half of the report. (Author/LH)