TY - JOUR
T1 - Processing Speed, Working Memory, and Fluid Intelligence
T2 - Evidence for a Developmental Cascade
AU - Fry, Astrid F.
AU - Hale, Sandra
PY - 1996/7
Y1 - 1996/7
N2 - 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 nearly 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.
AB - 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 nearly 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.
UR - https://www.scopus.com/pages/publications/0348006894
U2 - 10.1111/j.1467-9280.1996.tb00366.x
DO - 10.1111/j.1467-9280.1996.tb00366.x
M3 - Article
AN - SCOPUS:0348006894
SN - 0956-7976
VL - 7
SP - 237
EP - 241
JO - Psychological Science
JF - Psychological Science
IS - 4
ER -