1997 年 3 巻 p. 15-25
In this paper the author reviewed 191 studies in the United States and 35 studies in Japan concerning the educational use of captioned materials. The subjects of the studies in Japan are all hearing whereas 71 % of those of the studies in the United States are deaf and hard-of-hearing people. Primary emphasis is placed on reading skills in the United States while a variety of areas are examined in Japan. From the perspective of how comprehension ability develops overtime, more longitudinal studies are needed, both in the United States and in Japan, to investigate the effects of captioned materials on learners. The author also reviewed a brief history of teletext and introduced the current situation of captioning in the United States.