Department of Psychiatry, Virginia Commonwealth University, VA 23298-0268, USA.
Clin Neuropsychol. 2010 Jan;24(1):80-94. doi: 10.1080/13854040903076004. Epub 2009 Sep 11.
A total of 64 elderly individuals presenting with cognitive decline were administered a test of general intelligence and a measure of adaptive knowledge and daily living skills. Premorbid ability was estimated using a demographic formula and a reading test. After controlling for age and depression, general intellectual ability accounted for a large amount of the variance in a broad range of adaptive knowledge and behavioral skills, reflecting the influence of premorbid ability and especially estimated decline. Different patterns of adaptive knowledge and skills were identified as a function of measured IQ and of estimated decline in IQ. Results suggest a threshold of intellectual decline for deterioration in daily living skills. Studies purporting to demonstrate that impairments in particular neuropsychological domains predict specific functional deficits need to control for general intellectual ability and/or the extent of intellectual decline.
共有 64 名认知能力下降的老年人接受了一般智力测试和适应性知识以及日常生活技能测试。采用人口统计学公式和阅读测试来估计发病前的能力。在控制年龄和抑郁因素后，一般智力能力在广泛的适应性知识和行为技能方面存在很大差异，反映了发病前能力和尤其是估计下降的影响。不同的适应性知识和技能模式是作为测量 IQ 和 IQ 估计下降的函数而确定的。研究结果表明，智力下降的阈值会导致日常生活技能的恶化。那些声称特定神经心理学领域的损伤可以预测特定的功能缺陷的研究，需要控制一般智力能力和/或智力下降的程度。
