a Johns Hopkins University , Baltimore , MD , USA.
Cogn Neuropsychol. 2010;27(4):334-59. doi: 10.1080/02643294.2010.524467. Epub 2010 Nov 19.
A central question for theories of inflected word processing is to determine under what circumstances compositional procedures apply. Some accounts (e.g., the dual-mechanism model; Clahsen, 1999 ) propose that compositional processes only apply to verbs that take productive affixes. For all other verbs, inflected forms are assumed to be stored in the lexicon in a nondecomposed manner. This account makes clear predictions about the consequences of disruption to the lexical access mechanisms involved in the spoken production of inflected forms. Briefly, it predicts that nonproductive forms (which require lexical access) should be more affected than productive forms (which, depending on the language task, may not). We tested these predictions through the detailed analysis of the spoken production of a German-speaking individual with an acquired lexical impairment resulting from a stroke. Analyses of response accuracy, error types, and frequency effects revealed that combinatorial processes are not restricted to verbs that take productive inflections. On this basis, we propose an alternative account, the stem-based assembly model (SAM), which posits that combinatorial processes may be available to all stems and not only to those that combine with productive affixes.
对于曲折词加工理论来说，一个核心问题是确定在什么情况下会运用组合过程。一些理论（如双机制模型；Clahsen，1999）认为，组合过程仅适用于带有能产性词缀的动词。对于所有其他动词，其曲折形式都被认为是以非分解的方式存储在词汇中的。这个理论对与曲折形式的口语产生有关的词汇通达机制受到干扰的后果做出了明确的预测。简单来说，它预测非能产性形式（需要词汇通达）应该比能产性形式（根据语言任务的不同，可能不需要）受到更大的影响。我们通过对一位因中风而导致获得性词汇损伤的德语使用者的口语产生进行详细分析来检验这些预测。对反应准确性、错误类型和频率效应的分析表明，组合过程并不仅限于带有能产性曲折的动词。在此基础上，我们提出了一个替代理论，即基于词干的组合模型（SAM），该理论假设组合过程可能适用于所有词干，而不仅仅是那些与能产性词缀组合的词干。
