Department of Psychology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
Neuropsychol Dev Cogn B Aging Neuropsychol Cogn. 2010 Mar;17(2):220-39. doi: 10.1080/13825580903042700. Epub 2009 Jul 29.
Clustering and switching strategies during phonemic and semantic verbal fluency tasks were investigated in healthy adults (n = 193, 86 males, 20-90 years) in young, middle-aged, young-old, and old-old age groups (Study 1). Older groups produced fewer total words and lower switching scores; males relied more on clustering and females on switching to produce equivalent output. In Study 2, early Alzheimer's disease participants, compared to healthy older adults, (n = 26 per group) produced fewer total words and smaller average clusters. Sex, age, and clinical differences on switching and clustering strategies support a dual processing model of verbal fluency.
在健康成年人（n=193，86 名男性，20-90 岁）中，研究了语音和语义流畅性任务期间的聚类和切换策略（研究 1）。年龄较大的组产生的总词数和切换分数较低；男性更多地依赖聚类，女性更多地依赖切换来产生等效输出。在研究 2 中，与健康老年人（每组 26 人）相比，早期阿尔茨海默病参与者产生的总词数更少，平均聚类更小。切换和聚类策略上的性别、年龄和临床差异支持言语流畅性的双重处理模型。
