Gladsjo J A, Schuman C C, Evans J D, Peavy G M, Miller S W, Heaton R K
University of California, San Diego, USA.
Assessment. 1999 Jun;6(2):147-78. doi: 10.1177/107319119900600204.
Letter and category fluency tasks are used to assess semantic knowledge, retrieval ability, and executive functioning. They appear to be useful in detecting different types of dementia, but accurate detection of neuropsychological impairment relies on appropriate normative data. Multiple regression analysis was used to develop demographically corrected norms for letter and category fluency in 768 normal adults. T-score equations were developed on a base subsample of 403, and crossvalidated on a separate subsample (n = 365). Participants ranged in age from 20 years to 101 years; in educational level from 0 to 20 years; 55% were Caucasian and 45% were African American. Together, age, education, and ethnicity were significant predictors of letter and category fluency performance, accounting for 15% and 25% of variance, respectively. Formulas and tables for converting raw fluency scores to demographically corrected T scores are presented.
字母流畅性任务和类别流畅性任务用于评估语义知识、检索能力和执行功能。它们似乎在检测不同类型的痴呆症方面很有用，但神经心理损伤的准确检测依赖于适当的常模数据。使用多元回归分析为768名正常成年人制定了经人口统计学校正的字母流畅性和类别流畅性常模。T分数方程是在403人的基础子样本上建立的，并在另一个子样本（n = 365）上进行了交叉验证。参与者年龄从20岁到101岁不等；教育水平从0年到20年不等；55%为白种人，45%为非裔美国人。年龄、教育程度和种族共同构成了字母流畅性和类别流畅性表现的显著预测因素，分别解释了15%和25%的方差。本文给出了将原始流畅性分数转换为经人口统计学校正的T分数的公式和表格。
