The aim of the current study is to explore the mechanism of working memory deficits of the children with attention deficit hyperactivity disorder. The performances of working memory of ADHD and normal control chil-dren were investigated in the verbal n-back task. The results revealed that there were no significant differences between the ADHD group and the NC group in the memory updating level zero, but the ADHD group performed worse than the NC group both in the memory updating level 1 and level 2. Effect sizes cohen′d were 1.31 and 1.63 sepa...
