Abstract
Equal numbers of aphasic adults, deaf children, ages 9-10, and deaf adolescents, ages 13-17, were required to complete stems of sentences. The incomplete sentences were typed automatically in the presence of the individual subject who constructed the final word of each sentence, monitored and corrected letter by letter. The responses were 55 words, 11 of which were predicted on each of five test days. The responses were repeated four times daily for four days, making 20 experiences (days) for each participant. The response words varied in numbers of letters and in numbers of phonemes. The results showed that the deaf adolescents made the fewest errors and the aphasic adults, the most. Except for words of two phonemes and two letters, the number of errors per letter increased with the length of the word.
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