This report presents findings on attitudes and behavior patterns of 6,768 American youths. The data were obtained as part of a Health Examination Survey conducted from March 1966 to March 1970. Two questionnaires were completed by the youths, one by parents, and one by teachers or school personnel. Each questionnaire investigated different content. The aim of the study was to identify the relationship of selected response distributions to demographic and socioeconomic variables. Five broad content categories comprise the selected items: general health status, health-related items, physical appearance and social patterns, school- and work-related behavior, and use of leisure time. The selected demographic and socioeconomic factors include parents' income, geographic region, urban or rural community, parents' education, and race. Findings show that there are definite relationships between the background variables and the attitudes and habits of the youths. Most items varied according to the socioeconomic status of the family. Detailed tables, technical notes on methods, definitions of terms, and selected portions from the questionnaires are included in the report. (Author/ND)