The main purpose of this study was to develop the Computerized Mandarin Tones Discrimination Test (CMTDT). The CMTDT contains 38 items and measurement is divided into two subscales: 20 one syllable items and 18 two syllable- words’ tone discrimination. Test time is 10-45 minutes. The CMTDT is useful in the initial screening of Mandarin tone awareness difficulties. The CMTDT is convenience for both individual and group testing. For the one syllable section, the respondent is asked to choose one tone of a phonetic symbol from a group of 4 items, in the two syllable section, the choice is made from a group of 2 items. The score was computed by the correct percentage from the total scale, and each tone's correct percentage. After the test is completed, the result is automatically analyzed by computer. The study sample was 752, included normal hearing children from first to second grade of elementary school. The discrimination validity sample was 18 children with mild to profound prelingual hearing impairments (HI) from elementary school resource classrooms. Reliability: The scale obtained high internal consistency correlations, split-half is .80~82, Kuder-Richardson Formula 20 is .80~.92. A subsamnple of (n=40) completed the CMTDT after 2 weeks, and the correlation between intake and 2-week CMTDT scores was .92. Validity: The correlation of the CMTDT with a Mandarin Phonetic Symbols Test was significant, and the correlation is .70 (p<.0l). The constructed validities by heterogeneous groups, hearing status, gender, grades, and tones were provided. From normal hearing and hearing impairment children, the result showed significant difference t=4.33 (p<.001), by hearing status showed no significant difference t-.736 (p>.05) for tones discrimination. The results confirm the presence of these validities. The result also showed the second tone was the most difficult tone. In contrast tone distinction, the most difficult pair was the second and the third tones.
The main purpose of this study was to develop the Computerized Mandarin Tones Discrimination Test (CMTDT). The CMTDT contains 38 items and measurement is divided into two subscales: 20 one syllable items and 18 two syllable- words’ tone discrimination. Test time is 10-45 minutes. The CMTDT is useful in the initial screening of Mandarin tone awareness difficulties. The CMTDT is convenience for both individual and group testing. For the one syllable section, the respondent is asked to choose one tone of a phonetic symbol from a group of 4 items, in the two syllable section, the choice is made from a group of 2 items. The score was computed by the correct percentage from the total scale, and each tone's correct percentage. After the test is completed, the result is automatically analyzed by computer. The study sample was 752, included normal hearing children from first to second grade of elementary school. The discrimination validity sample was 18 children with mild to profound prelingual hearing impairments (HI) from elementary school resource classrooms. Reliability: The scale obtained high internal consistency correlations, split-half is .80~82, Kuder-Richardson Formula 20 is .80~.92. A subsamnple of (n=40) completed the CMTDT after 2 weeks, and the correlation between intake and 2-week CMTDT scores was .92. Validity: The correlation of the CMTDT with a Mandarin Phonetic Symbols Test was significant, and the correlation is .70 (p<.0l). The constructed validities by heterogeneous groups, hearing status, gender, grades, and tones were provided. From normal hearing and hearing impairment children, the result showed significant difference t=4.33 (p<.001), by hearing status showed no significant difference t-.736 (p>.05) for tones discrimination. The results confirm the presence of these validities. The result also showed the second tone was the most difficult tone. In contrast tone distinction, the most difficult pair was the second and the third tones.