Hofstede B T, Kolk H H
Nijmegen Institute for Cognition and Information, University of Nijmegen, The Netherlands.
Brain Lang. 1994 Feb;46(2):278-328. doi: 10.1006/brln.1994.1017.
Generally task variation is not taken into account in discussions about agrammatism in Broca's aphasia. Both free speech and speech under constrained conditions are classified as "agrammatic speech." In this study, we investigated the effects of task variation on the character of agrammatic speech. We employed three types of task situations, an interview and two picture description tasks, to elicit speech from 16 Dutch and 3 German Broca's aphasics. The two picture description tasks differed in the extent to which they necessitated the production of grammatical morphology. Various task-dependent changes in the character of agrammatic speech were observed. Overall, omission rates of grammatical morphemes went down and substitution rates tended to go up in picture description as compared to free conversation. Results are discussed by contrasting two explanatory concepts, task interaction and strategic variation.
一般来说，在关于布罗卡失语症中语法缺失的讨论中，任务变化并未被考虑在内。自由言语和受限条件下的言语都被归类为“语法缺失言语”。在本研究中，我们调查了任务变化对语法缺失言语特征的影响。我们采用了三种任务情境，即一次访谈和两项图片描述任务，从16名荷兰和3名德国布罗卡失语症患者中引出言语。这两项图片描述任务在需要生成语法形态的程度上有所不同。观察到了语法缺失言语特征中各种与任务相关的变化。总体而言，与自由对话相比，图片描述中语法语素的省略率下降，替换率趋于上升。通过对比任务交互和策略变化这两个解释概念对结果进行了讨论。
