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Judgment of functional morphology in agrammatic aphasia
Journal of Neurolinguistics ( IF 2 ) Pub Date : 2008-01-01 , DOI: 10.1016/j.jneuroling.2007.08.001
Michael Walsh Dickey 1 , Lisa H Milman , Cynthia K Thompson
Affiliation  

Individuals with agrammatic Broca's aphasia show deficits in production of functional morphemes like complementizers (e.g., that and if) and tense and agreement markers (e.g., -ed and -s), with complementizers often being more impaired than verbal morphology. However, there has been comparatively little work examining patients' ability to comprehend or judge the grammaticality of these morphemes. This paper investigates comprehension of complementizers and verb inflections in two timed grammaticality-judgment experiments. In Experiment 1, participants with agrammatic Broca's aphasia and grammatical-morphology production deficits (n=10) and unimpaired controls (n=10) heard complement clause sentences, subject relative clause sentences, and conjoined sentences. In Experiment 2, the same participants heard sentences with finite auxiliaries, sentences with finite main verbs, and sentences with uninflected verbs. Results showed above-chance accuracy in aphasic participants' judgments for complementizer sentences in Experiment 1, but chance performance for verb inflections in Experiment 2. This pattern held regardless of whether the verb inflections were affixes or free-standing auxiliaries. Implications of these results for theories of agrammatic morphological impairments, including feature underspecification accounts (Wenzlaff & Clahsen, 2004; Burchert, Swoboda-Moll & DeBleser, 2005a) and hierarchical structure-based accounts (Friedmann & Grodzinsky, 1997; Izvorski & Ullman, 1999), are discussed.

中文翻译:

语法性失语症的功能形态判断

具有语法失语性 Broca 失语症的个体在功能性语素(如补语(例如,that 和 if)以及时态和一致标记(例如,-ed 和 -s))的产生方面表现出缺陷,补语通常比语言形态更受损害。然而,相对较少的工作来检查患者理解或判断这些语素的语法的能力。本文研究了在两个定时语法判断实验中对补语和动词变形的理解。在实验 1 中,有语法失语症和语法形态产生缺陷的被试(n=10)和未受损对照组(n=10)听到补语从句、主语从句和连词。在实验 2 中,同样的参与者听到了带有有限助动词的句子、带有有限主要动词的句子和带有非屈折动词的句子。结果表明,实验 1 中失语被试对补语句子的判断准确率高于偶然,但实验 2 中动词屈折的概率表现。无论动词屈折是词缀还是独立助词,这种模式都成立。这些结果对语法形态障碍理论的影响,包括特征不足说明(Wenzlaff & Clahsen,2004;Burchert、Swoboda-Moll & DeBleser,2005a)和基于层次结构的说明(Friedmann & Grodzinsky,1997;Izvorski & Ullman, ),进行讨论。结果表明,实验 1 中失语被试对补语句子的判断准确率高于机会,但实验 2 中动词变化的机会表现。无论动词变化是词缀还是独立助词,这种模式都成立。这些结果对语法形态障碍理论的影响,包括特征不足说明(Wenzlaff & Clahsen,2004;Burchert、Swoboda-Moll & DeBleser,2005a)和基于层次结构的说明(Friedmann & Grodzinsky,1997;Izvorski & Ullman, ),进行讨论。结果表明,实验 1 中失语被试对补语句子的判断准确率高于偶然,但实验 2 中动词屈折的概率表现。无论动词屈折是词缀还是独立助词,这种模式都成立。这些结果对语法形态障碍理论的影响,包括特征不足说明(Wenzlaff & Clahsen,2004;Burchert、Swoboda-Moll & DeBleser,2005a)和基于层次结构的说明(Friedmann & Grodzinsky,1997;Izvorski & Ullman, ),进行讨论。无论动词变形是词缀还是独立的助词,这种模式都成立。这些结果对语法形态障碍理论的影响,包括特征欠规范说明(Wenzlaff & Clahsen,2004;Burchert、Swoboda-Moll & DeBleser,2005a)和基于层次结构的说明(Friedmann & Grodzinsky,1997;Izvorski & Ullman, ),进行讨论。无论动词变形是词缀还是独立的助词,这种模式都成立。这些结果对语法形态障碍理论的影响,包括特征不足说明(Wenzlaff & Clahsen,2004;Burchert、Swoboda-Moll & DeBleser,2005a)和基于层次结构的说明(Friedmann & Grodzinsky,1997;Izvorski & Ullman, ),进行讨论。
更新日期:2008-01-01
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