Royal Dutch Kentalis, Speech & Language Centre, Eindhoven, the Netherlands.
Int J Lang Commun Disord. 2012 Sep-Oct;47(5):542-55. doi: 10.1111/j.1460-6984.2012.00164.x. Epub 2012 Jul 18.
While narrative tasks have proven to be valid measures for detecting language disorders, measuring communicative skills and predicting future academic performance, research into the comparability of different narrative tasks has shown that outcomes are dependent on the type of task used. Although many of the studies detecting task differences touch upon the fact that tasks place differential demands on cognitive abilities like auditory attention and memory, few studies have related specific narrative tasks to these cognitive abilities. Examining this relation is especially warranted for children with specific language impairment (SLI), who are characterized by language problems, but often have problems in other cognitive domains as well.
METHODS & PROCEDURES: In the current research, a comparison was made between a story retelling task (The Bus Story) and a story generation task (The Frog Story) in a group of children with SLI (n= 34) and a typically developing group (n= 38) from the same age range. In addition to the two narrative tasks, sustained auditory attention (TEA-Ch) and verbal working memory (WISC digit span and the Dutch version of the CVLT-C word list recall) were measured. Correlations were computed between the narrative, the memory and the attention scores.
OUTCOMES & RESULTS: A group comparison showed that the children with SLI scored significantly worse than the typically developing children on several narrative measures as well as on sustained auditory attention and verbal working memory. A within-subjects comparison of the scores on the two narrative tasks showed a contrast between the tasks on several narrative measures. Furthermore, correlational analyses showed that, on the level of plot structure, the story generation task correlated with sustained auditory attention, while the story retelling task correlated with word list recall. Mean length of utterance (MLU) on the other hand correlated with digit span but not with sustained auditory attention.
While children with SLI have problems with narratives in general, their performance is also dependent on the specific elicitation task used for research or diagnostics. Various narrative tasks generate different scores and are differentially correlated to cognitive skills like attention and memory, making the selection of a given task crucial in the clinical setting.
虽然叙述任务已被证明是检测语言障碍、衡量交际能力和预测未来学业成绩的有效手段,但对不同叙述任务的可比性的研究表明,结果取决于所使用的任务类型。尽管许多检测任务差异的研究都提到任务对听觉注意力和记忆力等认知能力有不同的要求,但很少有研究将特定的叙述任务与这些认知能力联系起来。对于有特定语言障碍(SLI)的儿童来说,尤其需要进行这种关系的研究,因为他们的语言存在问题,但通常也存在其他认知领域的问题。
在当前的研究中,对一组 SLI 儿童(n=34)和同年龄段的正常发育儿童(n=38)进行了故事复述任务(公共汽车故事)和故事生成任务(青蛙故事)的比较。除了这两个叙述任务外,还测量了持续听觉注意力(TEA-Ch)和言语工作记忆(WISC 数字跨度和荷兰版 CVLT-C 单词列表回忆)。计算了叙述、记忆和注意力分数之间的相关性。
组间比较显示,SLI 儿童在几个叙述测量以及持续听觉注意力和言语工作记忆方面的得分明显低于正常发育儿童。对两个叙述任务得分的个体内比较显示,在几个叙述测量方面,两个任务之间存在差异。此外,相关分析表明,在情节结构层面上,故事生成任务与持续听觉注意力相关,而故事复述任务与单词列表回忆相关。另一方面,平均话语长度(MLU)与数字跨度相关,但与持续听觉注意力不相关。
虽然 SLI 儿童一般都存在叙述问题,但他们的表现也取决于研究或诊断中使用的特定引出任务。各种叙述任务会产生不同的分数,与注意力和记忆力等认知技能的相关性也不同,这使得在临床环境中选择特定任务至关重要。