普通话儿童词汇相邻性测试词表总体信度评估  

Evaluation on the reliability of mandarin lexical neighborhood test

作　　者：王素菊[1,2] 孔颖[1,2] 冯洁芬[1,2] 刘海红[1,2] 李淑静[1,2] 杨宜林[1,2] 刘莎[1,2] 

机构地区：[1]首都医科大学附属北京同仁医院耳鼻咽喉头颈外科 [2]北京市耳鼻咽喉科研究所教育部耳鼻咽喉头颈外科重点实验室,北京100730

出　　处：《首都医科大学学报》2011年第6期721-728,共8页Journal of Capital Medical University

基　　金：国家自然科学基金(30872859);北京市自然科学基金(7093117);国家科技支撑计划(2008BAI50B01);教育部人文社会科学研究项目基金(09YJA880096)~~

摘　　要：目的对等价性的普通话儿童词汇相邻性测试词表(mandarin lexical neighborhood test,M-LNT)进行可行性、可靠性以及效能的评估,通过词表的得分-强度(performance-intensity,P-I)函数曲线、言语识别阈以及临界差值等指标,以期获得M-LNT词表的总体信度,为临床听力障碍患者的使用建立基准曲线。方法选取听力正常者52名,对双音节难、易词表和单音节难、易词表的4类12张词表进行测试。实验先期获得材料的P-I函数曲线的6个测试强度,依次采用随机区组设计方法,受试者随机分到奇数位或偶数位强度组,测试顺序为先易后难,3张表顺序轮换。获得每一强度下的识别率得分,用Matlab 7.1软件进行P-I曲线拟合、计算曲线的斜率、言语识别阈和临界差值。结果 4类词表的每类词表间的结果差异无统计学意义(P>0.05),表间等价。对拟合P-I曲线分析得出单音节易词表、单音节难词表、双音节易词表和双音节难词表平均阈值分别为25 dB SPL、31 dBSPL、20 dB SPL、24 dB SPL,50%斜率分别为2.8%/dB SPL、3.0%/dB SPL、5.8%/dB SPL、4.1%/dB SPL,95%置信区间下的总体临界差值分别为±22.2%、±26.1%、±32.7%、±29.9%。结论本实验以普通话儿童词汇相邻性测试词表为测试材料,4类词表的总体临界差值分别为±22.2%、±26.1%、±32.7%、±29.9%,总体信度可靠,并且获得P-I曲线,建立了M-LNT词表言语识别率的基准曲线。Objective To evaluate the reliability of the mandarin lexical neighborhood test（M-LNT）,obtain the performance-intensity curve,speech recognition threshold and critical difference,and establish basic curve for the clinical use. Methods Fifty-two normal hearing adults were recruited to evaluate the reliability of M-LNT which consists of four types of list： monosyllable-easy word lists,monosyllable-hard word lists,disyllable-easy word lists and disyllable-hard word lists.Six intensities were chosen from pre-experiments.According to the randomized block design,for every list 3 intensities of which number is odd or even of the six selected ones were presented to subjects.The test sequence is from easy lists to hard.After calculating the scores of every intensity for every list,the Matlab 7.1 software was used to do the P-I curve fitting the scores and calculate the curve＇s slope,speech recognition threshold and critical difference. Results Statistical analysis showed that there was no significant difference between any two scores of monosyllable-easy word lists,scores of monosyllable-hard word lists,the scores of disyllable-easy word lists and the scores of disyllable-hard word lists（P0.05）.The P-I curves of monosyllable-easy word lists,monosyllable-hard word lists,disyllable-easy word lists and disyllable-hard word lists were analyzed;the speech recognition threshold was respectively 25 dB SPL,31 dB SPL,20 dB SPL and 24 dB SPL;the 50% slope was respectively 2.8%/dB SPL,3.0%/dB SPL,5.8%/dB SPL and 4.1%/dB SPL;the critical difference at 95% confidence level was respectively ±22.2%,±26.1%,±32.7% and ±29.9%. Conclusion After the evaluation of M-LNT,the critical difference at 95% confidence level of four types of lists was respectively ±22.2%,±26.1%,±32.7% and ±29.9% which indicate the lists＇ reliability.The P-I curves were fitted by the scores at different intensities and the speech recognition scores basic curve was established.

关 键 词：言语测听 总体信度 P-I曲线 临界差值 

分 类 号：R764.43[医药卫生—耳鼻咽喉科]