The data analysis and findings of the first panel study of adolescents and pre-adolescents in Canada are described. This longitudinal study was designed to (1) gather data on television viewing of heroes and heroines in series in the home environment; (2) analyze verbal responses about television programs to determine values perceived and the cognitive processing strategies used by the two age groups, and (3) determine if biological predisposition of the sexes was a factor in information perceived and meanings assigned. Initial questionnaires were administered separately to children and parents to gather sociodemographic, cultural, media, and family relationship data prior to the experiment. Repeat questionnaires were administered after every two weeks of viewing of the child's favorite television show. Analyses of the responses to measure age and sex differences on four dimensions--concrete/cognitive, concrete/affective, inferred/cognitive, and inferred/affective--show clearly and specifically on what dimensions differences occur in perception of content by boys and girls aged 10 and 14. (Author/JEG)