Heller R B, Dobbs A R
Department of Psychology, University of Alberta, Edmonton, Canada.
Psychol Aging. 1993 Sep;8(3):443-50.
Measures of word finding in discourse (video description task) and nondiscourse situations (word fluency tasks) were obtained from a sample of 90 community-dwelling healthy adults. Age differences were found in the accuracy and uncertainty of the labels used to refer to the characters and objects depicted in the video description task and in the number of correct responses in the category fluency task. There was a significant amount of shared variance between the 2 types of tasks. More important, there was a significant amount of variance in the video discourse task associated with age that was independent of performance in the word fluency task. The communicative impact of a word-finding problem and need for discourse level study are discussed.
从90名居住在社区的健康成年人样本中获取了话语中找词能力的测量结果（视频描述任务）以及非话语情境下找词能力的测量结果（词语流畅性任务）。在视频描述任务中用于指代所描绘角色和物体的标签的准确性和不确定性，以及类别流畅性任务中的正确回答数量方面，发现了年龄差异。这两种类型的任务之间存在大量共同方差。更重要的是，视频话语任务中存在与年龄相关的显著方差，且该方差独立于词语流畅性任务的表现。讨论了找词问题的交流影响以及对话语层面研究的需求。
