Processing variant forms in spoken word recognition: The role of variant frequency
Processing variant forms in spoken word recognition: The role of variant frequency
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DOI：
10.3758/pp.70.3.403
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发表时间：
2008-04-01
期刊：
影响因子：
--
通讯作者：
Patterson, David J.
中科院分区：
文献类型：
--
作者：
Connine, Cynthia M.;Ranbom, Larissa J.;Patterson, David J.
在元音检测(缺少/存在)和音节数判断(两个或三个音节)任务中，研究了口语语音变体--schwa元音缺失(例如，公司元音缺失)的识别。使用不同频率的语料库分析(Patterson，Locasto，&Conine，2003)来选择具有高或低希瓦元音缺失率的单词。为其中操纵了schwa元音长度的每个单词创建了语音连续体(明确的schwa存在和不存在schwa的端点，以及中间的歧义标记)。匹配的对照非词由相同的schwa元音连续体和周围的音段组成。低删失率的词比高删失率的词表现出更多的三音节判断。匹配对照的非单词并不作为删失率的函数而不同。实验2和实验3显示，与不频繁的词表形式相比，在词形删除(实验2)和词形存在(实验3)刺激下，较频繁的词表形式具有词汇判断反应时的优势。根据异构词的变异频率，对结果进行了讨论。
Recognition of a spoken word phonological variant-schwa vowel deletion (e.g., corporate -> corp'rate)-was investigated in vowel detection (absent/present) and syllable number judgment (two or three syllables) tasks. Variant frequency corpus analyses (Patterson, LoCasto, & Connine, 2003) were used to select words with either high or low schwa vowel deletion rates. Speech continua were created for each word in which schwa vowel length was manipulated (unambiguous schwa-present and schwa-absent endpoints, along with intermediate ambiguous tokens). Matched control nonwords were created with identical schwa vowel continua and surrounding segments. The low-deletion-rate words showed more three-syllable judgments than did the high-deletion-rate words. Matched control nonwords did not differ as a function of deletion rate. Experiments 2 and 3 showed a lexical decision reaction time advantage for more frequent surface forms, as compared with infrequent ones, for schwa-deleted (Experiment 2) and schwa-present (Experiment 3) stimuli. The results are discussed in terms of representations of variant forms of words based on variant frequency.