| Summary: | 碩士 === 國立高雄師範大學 === 聽力學與語言治療研究所 === 101 === The purpose of this study was to compare the practice effect on the nonword repetition performance for children and adults by measuring three variables: the correct percentage, reaction time, and response duration. The participants of this study were 20 children (mean age: 6.91) and 20 adults (mean age: 27.56). Each participant had to repeat the nonword set 4 times on day1, and repeat the same nonword set 4 times on day2. There were 24 nonwords in the nonword set, including three syllable lengths (3, 4 and 5) and two syllable frequency (high and low). The order of the nonwords was presented randomly in each set. The results showed that (1) children and adults had significant practice effect on the correct percentage, reaction time, and response duration. The three variables on day2 were significant improved than those on day1. (2) There was significant difference between children and adults in the three variables both on day1 and day2. The correct percentage of children was lower than that of adults, the reaction time and response duration were longer than those of adults. (3) For both children and adults, the correct percentage of 3-syllabes nonwords was the highest among the three types of nonwords, and the 5-syllables nonwords was the lowest. The reaction time was the shortest for 4-syllables nonwords, however, there was no significance between 3-syllables and 5-syllables. There was no significance difference among the three syllable types of nonwords for the syllable duration of repetition. (4) For two frequency types of nonwords, the correct percentage of the high-frequency nonwords was significantly higher than those of low-frequency nonwords. The reaction time and response duration of the high-frequency nonwords were significantly shorter than those of low-frequency nonwords. The implication of the study was that new speech motor skills could be enhanced on the correctness and fluency by two days of practice.
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