Objective:To investigate the effects of methamphetamine(MA) addiction on different components of working memory.Methods:We selected 69 methamphetamine abusers as addiction group and 69 healthy individuals as control group.Based on Baddeley multi-component model of working memory,digital backward task and visual-spatial span task were adopted to test the verbal working memory capacity and visual-spatial working memory capacity.The updating ability,transfer ability and inhibition ability of working memory cen...