Macquarie University, Sydney, Australia.
Cogn Neuropsychol. 2004 Feb 1;21(1):57-78. doi: 10.1080/02643290342000122.
Many people with aphasia show effects of word length on the accuracy of their word production. However, it is unclear from previous research whether this is an effect of number of phonemes, number of syllables or the complexity of the syllable structure (number of consonant clusters), as these factors are usually confounded. This paper is the first to attempt to dissociate the effects of these three factors on word production in a case series of nine English-speaking aphasic individuals. Using carefully controlled stimuli and analysis using logistic regression, the effects of these highly intercorrelated variables can be distinguished. Significant effects of number of phonemes were found on word production accuracy in English but there was no evidence for independent effects of number of syllables, number of clusters (syllabic complexity), or syllable frequency (once the intercorrelations between these variables had been controlled). It is argued that these data are consistent with any theory of spoken word production that incorporates a level of processing where phonemes are represented and that level is a potential source of error.
许多失语症患者在单词生成的准确性上表现出单词长度的影响。然而，以前的研究尚不清楚这是音素数量、音节数量还是音节结构（辅音簇数量）的复杂性的影响，因为这些因素通常是混淆的。本文首次尝试在一系列 9 名英语失语症个体的病例系列中，将这三个因素对单词生成的影响分开。使用精心控制的刺激和逻辑回归分析，可以区分这些高度相关变量的影响。在英语单词生成准确性方面，音素数量有显著影响，但音节数量、辅音簇数量（音节复杂性）或音节频率（在这些变量之间的相互关系得到控制后）没有独立影响的证据。有人认为，这些数据与任何包含处理水平的口语单词生成理论一致，在该处理水平中，音素被表示，并且该水平是错误的潜在来源。
