Intelligence does not correlate with inhibitory ability at every age

Accumulating evidence suggests that inhibitory ability is related to intelligence, while other studies don’t confirm this finding. This study explored the relationship of intelligence to inhibitory control in primary school children, aged 7- to 8-year-old, 9- to 10-year-old and 11- to 12-year-old. Raven's advanced progressive matrices and Cattell's Culture Fair Test were administered. The inhibitory ability was measured with a computerized Stroop Test. There was only significant correlation between intelligence and Stroop Test on 11- to 12-year-old children. These results suggested that the relationship between intelligence and inhibitory control was dependent on the participants’ age. © 2009 Published by Elsevier Ltd.