Nebes R D, Madden D J
Department of Psychiatry, University of Pittsburgh, Pennsylvania 15213.
Psychol Aging. 1988 Mar;3(1):102-4. doi: 10.1037//0882-7974.3.1.102.
Aging has previously been shown to produce a generalized proportional slowing of all cognitive operations. In contrast, the present results suggested that Alzheimer's disease produces a disproportionate reduction in the speed with which patients carry out one or more mental operations. The tasks that demented patients found particularly difficult involved either a self-directed search of their lexicon or the use of familiarity information.
先前的研究表明，衰老会导致所有认知操作普遍成比例地变慢。相比之下，目前的结果表明，阿尔茨海默病会使患者进行一项或多项心理操作的速度出现不成比例的下降。痴呆患者觉得特别困难的任务要么是对其词汇库进行自主搜索，要么是利用熟悉度信息。
