1Centre for Cognitive Ageing and Cognitive Epidemiology.
Psychol Sci. 2013 Dec;24(12):2361-8. doi: 10.1177/0956797613486487. Epub 2013 Oct 1.
As a foundation for studies of human cognitive aging, it is important to know the stability of individual differences in cognitive ability across the life course. Few studies of cognitive ability have tested the same individuals in youth and old age. We examined the stability and concurrent and predictive validity of individual differences in the same intelligence test administered to the same individuals (the Lothian Birth Cohort of 1921, N = 106) at ages 11 and 90 years. The correlation of Moray House Test scores between age 11 and age 90 was .54 (.67 when corrected for range restriction). This is a valuable foundation for estimating the extent to which cognitive-ability differences in very old age are accounted for by the lifelong stable trait and by the causes of cognitive change across the life course. Moray House Test scores showed strong concurrent and predictive validity with "gold standard" cognitive tests at ages 11 and 90.
作为人类认知老化研究的基础，了解认知能力在整个生命周期中个体差异的稳定性非常重要。很少有研究在青年期和老年期测试相同的个体认知能力。我们检验了相同个体（1921 年爱丁堡出生队列，N=106）在 11 岁和 90 岁时接受相同智力测试（莫里豪斯测试）的个体差异的稳定性、同期和预测有效性。11 岁时的莫里豪斯测试分数与 90 岁时的分数相关系数为.54（范围限制校正后为.67）。这为估计非常高龄时的认知能力差异在多大程度上由终生稳定特质以及整个生命周期的认知变化原因所导致提供了有价值的基础。莫里豪斯测试分数在 11 岁和 90 岁时与“黄金标准”认知测试具有很强的同期和预测有效性。
