Univ Sci & Technol China, Ctr Brain Sci, Hefei 230026, Peoples R China
; Univ Sci & Technol China, Dept Neurobiol, Hefei 230026, Peoples R China
; Univ Sci & Technol China, Cognit Sci Lab, Hefei 230026, Peoples R China
; Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China
A dual-task (Corsi tapping as the 2nd task) and a single/dual recall paradigm were used to explore the encoding and retrieval of short term memory and the role of central executive (CE). The results show that the competition for CE resources produced significant decrement of digit recall at both encoding and retrieval. The increment of load of Corsi tapping may change the allocation of CE resources. These results are different from those of Morris' working memory and Craik's long term memory experiments due to the differences in methods.