Nippold Marilyn A, Mansfield Tracy C, Billow Jesse L
Communication Disorders and Sciences, College of Education, University of Oregon, Eugene, OR 97403, USA.
Am J Speech Lang Pathol. 2007 May;16(2):179-88. doi: 10.1044/1058-0360(2007/022).
Expository discourse, the use of language to convey information, requires facility with complex syntax. Although expository discourse is often employed in school and work settings, little is known about its development in children, adolescents, and adults. Hence, it is difficult to evaluate this genre in students who have language disorders. This study examined syntactic complexity in expository discourse in an effort to begin to establish a normative database.
Speakers with typical development whose mean ages were 11, 17, and 25 years old (n=60) participated in a peer conflict resolution (PCR) task designed to elicit expository discourse. The results were compared with an additional measure of expository discourse, the favorite game or sport (FGS) task, reported in a previous study that included these same participants (M. A. Nippold, L. J. Hesketh, J. K. Duthie, & T. C. Mansfield, 2005).
The PCR task elicited expository discourse from speakers in all 3 groups. Older speakers packed more information into their utterances than did younger ones, and the PCR task elicited greater syntactic complexity than did the FGS task.
The PCR task is potentially a useful tool for examining expository discourse. Research is needed to expand the database and administer the task to clinical groups.
说明文语篇,即运用语言来传达信息,需要具备处理复杂句法的能力。尽管说明文语篇常在学校和工作场景中使用,但对于其在儿童、青少年和成年人中的发展情况却知之甚少。因此,很难对有语言障碍的学生的这种语篇类型进行评估。本研究考察了说明文语篇中的句法复杂性,以期开始建立一个规范数据库。
平均年龄为11岁、17岁和25岁的发育正常的说话者(n = 60)参与了一项旨在引出说明文语篇的同伴冲突解决(PCR)任务。研究结果与之前一项包含相同参与者的研究(M. A. 尼波尔德、L. J. 赫斯基思、J. K. 达西和T. C. 曼斯菲尔德,2005年)中报道的另一项说明文语篇测量方法,即最喜欢的游戏或运动(FGS)任务的结果进行了比较。
PCR任务引出了所有3组说话者的说明文语篇。年龄较大的说话者在话语中包含的信息比年龄较小的说话者更多,并且PCR任务引出的句法复杂性比FGS任务更大。
PCR任务可能是考察说明文语篇的一种有用工具。需要开展研究以扩大数据库,并将该任务应用于临床群体。