Processing speed, working memory, and fluid intelligence: Evidence for a developmental cascade
Processing speed, working memory, and fluid intelligence: Evidence for a developmental cascade
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DOI：
10.1111/j.1467-9280.1996.tb00366.x
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发表时间：
1996-07-01
影响因子：
8.2
通讯作者：
Hale, S
中科院分区：
文献类型：
--
作者：
Fry, AF;Hale, S
在儿童、青少年和年轻人（7至19岁）的大样本（N = 214）中评估了处理速度、工作记忆容量和流体智力。通径分析结果表明，加工速度和工作记忆的发育变化对流体智力的增龄效应有近一半的影响，而加工速度的发育变化对工作记忆的增龄效应有近四分之三的影响。此外，即使在速度、工作记忆和流体智力方面的年龄相关差异在统计学上得到控制，速度的个体差异对工作记忆容量有直接影响，而工作记忆容量又是流体智力个体差异的直接决定因素。
Processing speed, working memory capacity, and fluid intelligence were assessed in a large sample (N = 214) of children, adolescents, and young adults (ages 7 to 19 years). Results of path analyses revealed that almost half of the age-related increase in fluid intelligence was mediated by developmental changes in processing speed and working memory, and near ly three fourths of the improvement in working memory was mediated by developmental changes in processing speed. Moreover, even when age-related differences in speed, working memory, and fluid intelligence were statistically controlled, individual differences in speed had a direct effect on working memory capacity, which, in turn, was a direct determinant of individual differences in fluid intelligence.