Abstract
This study examined comprehension performance of aphasics in the sentence verification task. It is reported that there are four stages in the sentence verification task, namely : picture, decoding sentence, decoding comparison, and response. The goal of this study was to specify the damaged stage in the sentence verification task. The subjects were 26 aphasics. The stimuli consisted of two types of active sentences. Measurement methods were the sentence verification task and the picture construction task.
The major findings were as follows :
1) Performance of the picture consrtuction task was significantly better than that of the sentence verification task.
2) Subjects unable to understand the sentence in the sentence verification task were divided between those who could understand the sentence in the picture construction task and those who could not.
These results suggested that subjects unable to understand the sentence in the sentence verification task were divided between those who have defect in the decoding stages and those who have defect in the comparison and response stages.
