Deary Ian J, Batty G David, Pattie Alison, Gale Catharine R
Medical Research Council Centre for Cognitive Ageing and Cognitive Epidemiology, Departmentof Psychology, University of Edinburgh, 7 George Square, Edinburgh EH89JZ, Scotland, United Kingdom.
Psychol Sci. 2008 Sep;19(9):874-80. doi: 10.1111/j.1467-9280.2008.02171.x.
The associations of childhood intelligence and dependability with adult mortality were examined in 1,181 people who were representative of the Scottish nation. Participants were born in 1936 and were followed for mortality from 1968 through early 2003. Higher intelligence and greater dependability were independent, significant predictors of lower mortality: With both factors entered together, the hazard ratio (HR) was 0.80 (95% confidence interval, CI: 0.65-0.99, p= .037) per standard deviation increase in intelligence and 0.77 (95% CI: 0.63-0.94, p= .009) per standard deviation increase in dependability. Children in the lower half of the distributions for intelligence and dependability were more than twice as likely to die compared with those who scored in the top half for both these measures (HR = 2.82; 95% CI: 1.81-4.41). Studied together for the first time in a representative sample, these two psychological variables are independent life-course risk factors for mortality. It is important to discover the mechanisms by which they influence survival.
在1181名具有苏格兰民族代表性的人群中，研究了儿童期智力和可靠性与成人死亡率之间的关联。参与者出生于1936年，从1968年至2003年初对其死亡率进行了跟踪。较高的智力和更强的可靠性是死亡率较低的独立显著预测因素：将这两个因素同时纳入分析时，智力每增加一个标准差，风险比（HR）为0.80（95%置信区间，CI：0.65 - 0.99，p = 0.037），可靠性每增加一个标准差，风险比为0.77（95%CI：0.63 - 0.94，p = 0.009）。在智力和可靠性分布下半部分的儿童死亡可能性是在这两项指标上得分都位于上半部分儿童的两倍多（HR = 2.82；95%CI：1.81 - 4.41）。在一个代表性样本中首次对这两个心理变量进行共同研究，发现它们是死亡率的独立生命历程风险因素。探究它们影响生存的机制很重要。
