Rimikis Stacey, Buchwald Adam
a Department of Communicative Sciences and Disorders , New York University , New York , USA.
Clin Linguist Phon. 2019;33(1-2):68-94. doi: 10.1080/02699206.2018.1519727. Epub 2018 Oct 4.
Although much of the research on morphology and aphasia has focused specifically on the distinction between regular and irregular verb production, individuals with aphasia often present with differences in performance these categories. While these within-category differences are relatively understudied, they have the potential to inform our understanding of the morphological processing system and treatment protocols for morphological impairment. The present study examines how morphophonological patterns in English impact past-tense production within the categories of regular and irregular verbs based on errors of an individual with acquired morphological impairment. Acquired morphological impairment was demonstrated by performance on two reading tasks. First, the individual produced more final consonant deletion errors in morphologically complex words (→[pre]) compared to homophones (→[pre]). Second, morphological deletion errors were found to occur at comparable rates for inflected regular verbs () and inflected irregular verbs (), whereas the analogous error (e.g. ) never occurred on the monomorphemic pairs. In order to examine differences within each category, we used a past-tense elicitation task designed to analyse the effect of differences in morphophonological pattern frequency on accuracy and error patterns in production. We found production of both regular and irregular verbs was affected by the extent to which different morphophonological patterns are supported in the language (i.e. the number of phonologically similar words within the lexicon which take the same inflectional change). These results provide evidence that morphophonological patterns are encoded in a way that impact morphological production, a finding which has both clinical and theoretical implications.
虽然许多关于形态学和失语症的研究特别关注规则动词和不规则动词生成之间的区别，但失语症患者在这些类别中的表现往往存在差异。虽然这些类别内的差异相对较少受到研究，但它们有可能增进我们对形态加工系统的理解以及对形态损伤的治疗方案。本研究基于一名获得性形态损伤个体的错误，考察英语中的形态音位模式如何影响规则动词和不规则动词类别中的过去式生成。通过两项阅读任务的表现证明了获得性形态损伤。首先，与同音异形词（→[pre]）相比，该个体在形态复杂的单词中产生了更多的词尾辅音删除错误（→[pre]）。其次，发现屈折规则动词（）和屈折不规则动词（）的形态删除错误发生率相当，而类似的错误（例如 ）在单语素词对中从未出现。为了考察每个类别中的差异，我们使用了一个过去式引出任务，旨在分析形态音位模式频率差异对生成准确性和错误模式的影响。我们发现规则动词和不规则动词的生成都受到语言中不同形态音位模式支持程度的影响（即词汇表中语音相似且采用相同屈折变化的单词数量）。这些结果提供了证据，表明形态音位模式以影响形态生成的方式进行编码，这一发现具有临床和理论意义。
