In reviewing the researches on the developmental change in children's comprehension of television, the following two aspects are considered : comprehension or cognition of difference between "reality" and "television world" and comprehension of "television content" from the social cognitive; point of view. In the first half of the review the developmental change in comprehension of telvision world and reality in early childhood is emphasized. Some confusion of the concept of "reality" in the past researches is also pointed out. In the latter half of the review, comprehension of television content is reviewed in relation with "social cognition" theories and studies. Because the studies reviewed here have not produced the consistent results,either because of misapplication of the theories or the vagueness of the definition of the theories, it is necessary to develop more systematic knowledge and information concerning the developmental change of children's comprehension of television. More researches should be done in this area.
