SPEECH SAMPLE-SIZE AND TEST-RETEST STABILITY OF CONNECTED SPEECH MEASURES FOR ADULTS WITH APHASIA
SPEECH SAMPLE-SIZE AND TEST-RETEST STABILITY OF CONNECTED SPEECH MEASURES FOR ADULTS WITH APHASIA
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DOI：
10.1044/jshr.3702.399
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发表时间：
1994-04-01
期刊：
影响因子：
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通讯作者：
NICHOLAS, LE
中科院分区：
文献类型：
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作者：
BROOKSHIRE, RH;NICHOLAS, LE
我们评估了语音样本大小对连接语音的两种测量方法——每分钟字数（WPM）和正确信息单位字数百分比（percent CIUs）——的重测稳定性的影响。研究人员使用一套标准的10种刺激，从20名未脑损伤的成年人和20名失语症患者中引出连接语言。记录每位受试者对10种刺激的反应，并对WPM和ciu百分比进行评分。然后，每个被试对10种刺激的反应被随机划分，以产生更小的语音样本，代表他或她对1、2、3、4、5和7种刺激的反应。然后对每个较小的样本量和完整的10个刺激样本评估WPM和百分比ciu测量的重测稳定性。对于两组来说，随着样本量的增加，两种测量方法的重测稳定性都有所增加，当样本量从代表1种刺激的样本量增加到代表4或5种刺激的样本量时，稳定性的增加幅度较小。总的来说，这些结果表明，在高重测稳定性和转录和评分语音样本所需的时间和精力之间的最佳平衡可以用代表4或5个刺激的样本来实现（失语症受试者的平均300到400个单词），尽管这在个体之间会有所不同。
The effect of speech sample size on the test-retest stability of two measures of connected speech-words per minute (WPM) and percent of words that are correct information units (Percent CIUs)-was evaluated. A standard set of 10 stimuli was used to elicit connected speech from 20 non-brain-damaged adults and 20 adults with aphasia. Each subject's responses to the 10 stimuli were transcribed and scored for WPM and Percent CIUs. Then each subject's responses to the 10 stimuli were randomly divided to produce smaller speech samples representing his or her responses to 1, 2, 3, 4, 5, and 7 stimuli. The test-retest stability of the WPM and Percent CIUs measures was then evaluated for each of the smaller sample sizes and for the complete 10-stimulus sample. For both groups, the test-retest stability of the two measures increased as sample size increased, with the greatest increases occurring as samples increased in size from those representing 1 stimulus to those representing 4 or 5 stimuli, with smaller increases in stability thereafter. In general, these results suggest that the best balance between high test-retest stability and the time and effort required to transcribe and score speech samples can be achieved with samples representing 4 or 5 stimuli (an average of 300 to 400 words for aphasic subjects), although this will vary across individuals.