This report describes the first wave of a research project investigating both the mass media behavior of adolescents in size and character of consumption, and their relations with the TV content consumed. This longitudinal study examines 11- to 15-year-olds through the use of specially developed scales and other traditional measures. Included are descriptions of adolescents' TV viewing and program preferences, and comparisons with those of their parents. Parental control over adolescents' TV use as described by the adolescents and their parents is also examined. Only data direcLly related to manifest mass media behavior are presented. Analyses of the scales measuring deeper relations to mass media content consumed are forthcoming in future reports. A list of references and 12 data tables are attached. (JVP)