Connine Cynthia M, Ranbom Larissa J, Patterson David J
Department of Psychology, State University of New York, Binghamton, New York 13901, USA.
Percept Psychophys. 2008 Apr;70(3):403-11. doi: 10.3758/pp.70.3.403.
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.
在元音检测（元音是否存在）和音节数量判断（两个或三个音节）任务中，研究了对口语单词语音变体——弱化元音删除（例如，corporate 变为 corp'rate）的识别。使用变体频率语料库分析（帕特森、洛卡斯托和康宁，2003）来选择弱化元音删除率高或低的单词。为每个单词创建语音连续体，其中弱化元音长度受到操控（明确的弱化元音存在和不存在的端点，以及中间的模糊标记）。使用相同的弱化元音连续体和周围片段创建匹配的对照非单词。低删除率的单词比高删除率的单词表现出更多的三音节判断。匹配的对照非单词在删除率方面没有差异。实验2和实验3表明，对于弱化元音删除的刺激（实验2）和存在弱化元音的刺激（实验3），与不常见的表面形式相比，更常见的表面形式在词汇判断反应时间上具有优势。根据基于变体频率的单词变体形式的表征对结果进行了讨论。
