정상시력과 저시력 읽기에서 맥락효과
The context effects in reading Hangul in normal and low vision
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초록
본 연구에서는 두 가지 읽기 방법으로 저시력인과 정상시력인의 문장 맥락효과를 비교하였다. 실험 1에서는 자기조절읽기(self-paced reading) 방법을, 실험 2에서는 신속순차제시(rapid serial visual presentation) 방법을 사용하여 문장과 무선단어열에서 정상시력 참가자와 저시력 참가자의 읽기속도를 비교하였다. 두 실험 결과에서 저시력 참가자의 읽기속도는 정상시력 참가자에 비해 현저히 감소하였으나, 맥락효과는 읽기 방법에 따라 상반된 양상을 보였다. 자기조절읽기를 사용한 실험 1에서는 정상시력보다 저시력에서 맥락효과가 컸고, 신속순차제시를 사용한 실험 2에서는 저시력보다 정상시력에서 맥락효과가 컸다. 본 결과는 맥락 정보가 처리될 시간이 충분히 허용되는 읽기 상황에서는 정상시력에 비해 저시력 읽기에서 맥락의 역할이 증가하나, 시간적 제약이 주어지는 읽기 상황에서는 반대로 정상시력에 비해 저시력 읽기에서 맥락의 역할이 감소함을 시사한다.
Abstract
In this study we examined the context effects in reading Hangul (Korean alphabets) in normal and low vision, using the two different reading techniques, self-paced reading (Experiment 1) and rapid serial visual presentation (Experiment 2). We compared the reading speed of participants with normal or low vision in sentences vs. randomly ordered words. The results from both experiments showed that the reading speed of participants with low vision slowed significantly relative to those with normal vision. However, the patterns in the size of context effects were different in the two experiments. The context effects were larger in low vision than in normal vision in self-paced reading, but they were smaller in low vision than in normal vision in RSVP. This result indicates that context may make a greater contribution for readers with low vision than for readers with normal vision when sufficient time is allowed to read; in contrary, its contribution is smaller for readers with low vision than for readers with normal vision when there is time limitation for reading.
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