Time-use diaries were collected over a 3-year period for 2 cohorts of 2- an
d 4-year-old children. TV viewing declined with age. Time spent in reading
and educational activities increased,with age on weekdays but declined on w
eekends. Time-use patterns were sex-stereotyped, and sex differences increa
sed with age. As individuals' time in educational activities, social intera
ction, and video games increased, their time watching entertainment TV decl
ined, but time spent playing covaried positively with entertainment TV. Edu
cational TV viewing was not related to time spent in non-TV activities. Mat
ernal education and home environment quality predicted frequent viewing of
educational TV programs and infrequent viewing of entertainment TV. The res
ults do not support a simple displacement hypothesis; the relations of TV v
iewing to other activities depend on the program content, the nature of the
competing activity, and the environmental context.