Christensen H, Korten A, Jorm A F, Henderson A S, Scott R, Mackinnon A J
National Health and Medical Research Council, Social Psychiatry Research Unit, The Australian National University, Canberra 0200 Australia.
Age Ageing. 1996 Jan;25(1):72-80. doi: 10.1093/ageing/25.1.72.
The influence of self-reported and informant-reported activity levels on Crystallized Intelligence, Fluid Intelligence, Memory and the Mini-Mental State Examination was investigated in a sample of 858 community-dwelling elderly subjects. Both self-reported and informant-reported activity levels explained variance beyond that accounted for by sex, sensory functioning, activities of daily living, medical conditions, current health problems and education. Age accounted for additional variance once activity and the other contextual variables were entered. Interaction effects indicated that inactivity was associated with poorer performance on fluid intelligence in older rather than younger elderly subjects and that inactivity was predictive of poor crystallized intelligence at younger ages. Higher informant-rated activity levels moderated the effects of education, so that higher activity offset effects associated with low education on memory tasks. The mount of variance explained by activity levels was modest.
在858名社区居住的老年受试者样本中，研究了自我报告和他人报告的活动水平对晶体智力、流体智力、记忆力和简易精神状态检查表的影响。自我报告和他人报告的活动水平都解释了超出性别、感觉功能、日常生活活动、医疗状况、当前健康问题和教育所解释的方差。一旦纳入活动及其他背景变量，年龄又解释了额外的方差。交互作用表明，不活动与老年而非年轻老年受试者流体智力较差有关，且不活动预示着年轻时晶体智力较差。他人评定的较高活动水平缓和了教育的影响，因此较高的活动抵消了低教育对记忆任务的影响。活动水平所解释的方差量不大。
