The Development of Inhibitory Control in Primary School Boys

The purpose of this study was to investigate the development of inhibitory control in a sample of Iranian children. In this study participants were ninety boys who studied in elementary school that they were selected by convenience sampling. In this study one-way ANOVA and Tukey's post hoc tests were used to evaluate the results of these children's performance in Flanker task (Eriksen &  Eriksen, 1974) and Go/ No go task (first applied by Gordon and Caramazza). The results of this study showed that as age increases, inhibitory control in several directions developed, ie response speed in the presence of congruent stimuli, inhibitory rate of incongruent stimuli, accuracy of execution stage (go) and speed of execution stage (go). But at age six up to nine, in this study the results showed reduction in accuracy of inhibition (no go). It generally seems with age, inhibitory control grows and develops in different ways.