The Adjusting-Paced Serial Addition Test (Adjusting-PSAT): thresholds for speed of information processing as a function of stimulus modality and problem complexity
The Adjusting-Paced Serial Addition Test (Adjusting-PSAT): thresholds for speed of information processing as a function of stimulus modality and problem complexity
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DOI：
10.1016/s0887-6177(02)00216-0
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发表时间：
2004-01-01
影响因子：
2.6
通讯作者：
Francis, M
中科院分区：
文献类型：
--
作者：
Royan, J;Tombaugh, TN;Francis, M
描述了PASAT（Adjusting-PSAT，Tombaugh，1999）的修改的计算机版本，其通过时间阈值而不是正确响应的数量来测量信息处理和工作记忆的速度。这是通过使数字之间的间隔时间取决于正确的响应来实现的-正确的响应会减少数字之间的间隔，而不正确的响应会增加间隔。呈现方式（视觉和听觉）与问题难度（答案在2-10或2-18之间）相结合。60名健康的学生志愿者在调整PSAT的表现进行了比较，获得几个传统的神经心理学措施（数字广度，连线测试，符号数字模态测试）和测试的基本技能。视觉版本的测试产生了较低的阈值比听觉版本，但问题的难度并没有产生显着的效果。在神经心理学测试中，Trails-B（TMT-B）与阈值的相关性最高。然而，回归分析显示，数学能力占更多的方差比TMT-B。这些发现的临床意义进行了讨论。(C)2002年美国国家神经心理学学会。由爱思唯尔科技有限公司出版。保留所有权利。
A modified computer version of the PASAT (Adjusting-PSAT, Tombaugh, 1999) is described that measures speed of information processing and working memory by means of a temporal threshold rather than number of correct responses. This is accomplished by making the duration of the interval between numbers depend on the correctness of responding-a correct response decreases the interval between digits and an incorrect response increases the interval. Modality of presentation (visual and auditory) was factorially combined with problem difficulty (answers between 2-10 or 2-18). Performance of 60 healthy student volunteers on the Adjusting-PSAT was compared to that obtained on several traditional neuropsychological measures (Digit Span, Trail Making Test, and Symbol Digit Modality Test) and on a test of basic addition skills. The visual version of the test produced a lower threshold than did the auditory version, but problem difficulty did not produce a significant effect. Of the neuropsychological tests, Trails-B (TMT-B) was most highly correlated with thresholds. However, regression analyses revealed that math ability accounted for more variance than did TMT-B. The clinical implications of these finding are discussed. (C) 2002 National Academy of Neuropsychology. Published by Elsevier Science Ltd. All rights reserved.