Deary Ian J, Allerhand Michael, Der Geoff
Medical Research Council Centre for Cognitive Ageing and Cognitive Epidemiology, Department of Psychology, University of Edinburgh, Edinburgh, United Kingdom.
Psychol Aging. 2009 Mar;24(1):40-7. doi: 10.1037/a0014442.
Participants in the West of Scotland Twenty-07 Study performed reaction time tasks and took the Alice Heim 4 Part 1 test (AH4) of intelligence twice, 13 years apart. Cross-lagged associations between speed of processing and AH4 were examined using latent variables in structural equation modeling. The stability coefficients of the latent traits of processing speed and of AH4 score across 13 years were .49 and .89, respectively. There was a significant association (-.21) between AH4 score at age 56 and speed of processing at age 69 but not vice versa. The results fail to support the theory that processing speed is a foundation for successful cognitive aging but support a hypothesis that suggests that higher general intelligence might be associated with lifestyle and other factors that preserve processing speed.
参与苏格兰西部2007研究的人员进行了反应时间任务，并两次接受了爱丽丝·海姆4部分第1测试（AH4）的智力测试，两次测试相隔13年。使用结构方程模型中的潜在变量检验了加工速度与AH4之间的交叉滞后关联。加工速度和AH4得分的潜在特质在13年中的稳定性系数分别为0.49和0.89。56岁时的AH4得分与69岁时的加工速度之间存在显著关联（-0.21），但反之则不然。结果未能支持加工速度是成功认知老化基础的理论，但支持一种假设，即较高的一般智力可能与保持加工速度的生活方式和其他因素有关。
