Objective: The purpose of the study is to further examine the effectiveness of computerized working memory intervention among Chinese population. Method: In comparing the performance of experimental group with those of control group, General Linear Model Analysis (repeated measures) was applied to neurological and behavioral measures obtained for working memory, response inhibition, and inattention and hyperactive symptoms. Results: For experimental group that received high-intensity training in school setting, there was a significant improvement in working memory reflected in neuropsychological measures as well as parent-rated behavioral measures as compared with the control group. Conclusion: Our results generally supported the effectiveness of group-based computerized training. It might be served as a cost-effective intervention in semistructured settings, with high-intensity training and minimal therapist involvement. (J. of Att. Dis. 2012; XX(X) 1-XX)