典型发育中的叙事语言采样：对临床试验的启示。
Narrative Language Sampling in Typical Development: Implications for Clinical Trials.
机构信息
University of Illinois at Urbana-Champaign.
University of Mississippi, Oxford.
出版信息
Am J Speech Lang Pathol. 2018 Feb 6;27(1):123-135. doi: 10.1044/2017_AJSLP-17-0046.
PURPOSE
This study examined cross-sectional age-related trajectories of expressive language variables (syntactic complexity, lexical diversity, unintelligibility, dysfluency, and talkativeness) derived from a narrative language sampling procedure.
METHOD
Narrative samples were analyzed from 103 typically developing individuals, ages 4-21 years.
RESULTS
Results showed that this procedure was effective for the entire age range, with participants producing an utterance on virtually every page of the wordless picture books used to prompt the narrative. Importantly, the cross-sectional trajectories for syntactic complexity and lexical diversity showed age-related increases through the age of 18 years, although measures of other dimensions of language showed different relationships with age.
CONCLUSIONS
These data inform developmental work and document the extent to which the narrative procedure can be used to characterize expressive language over a wide age range. This procedure has been proposed as an outcome measure for clinical trials and interventions involving individuals with intellectual and developmental disabilities. The present data document the developmental levels for which the procedure and metrics derived are appropriate.
目的
本研究通过对叙事语言取样过程中得出的表达性语言变量（句法复杂度、词汇多样性、清晰度、不流畅度和话多程度）的横向年龄轨迹进行了检验。
方法
对 103 名正常发育个体（4-21 岁）的叙事样本进行了分析。
结果
结果表明，该程序在整个年龄范围内都非常有效，参与者几乎在用于提示叙事的每一页无字图画书中都能说出一句话。重要的是，句法复杂度和词汇多样性的横向轨迹在 18 岁之前呈与年龄相关的增加趋势，尽管语言其他维度的测量结果与年龄的关系不同。
结论
这些数据为发展性工作提供了信息，并记录了叙事程序在多大程度上可以用于描述广泛年龄范围内的表达性语言。该程序已被提议作为涉及智力和发育障碍个体的临床试验和干预的结果测量。本数据记录了程序和衍生指标适用的发展水平。
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