Abstract: Ten treatments constituting of attention factor, task factor, and block factor were studied. The indirect measure of task factor was divided into four subtasks according to global and local process of Chinese characters, Instruction in the test phase created different discrimination tasks which were matched in all other characteristics. It was discovered that there were three necessary conditions of the existence of implicit memory, namely uncued characters, preference discrimination(indirect) measure and global process, in which the performance of indirect measure is significantly greater than chance level while that of direct measure is the opposite, The experiment proposed an alternative branch based on Reingold and Merikle's logic, attempting to form a perfect alternative approach to study implicit memory compared with the dissociation paradigm. The application of matched method is vital.

Key words: implicit memory, global and local process of Chinese characters, matched method, preference discrimination task, direct and indirect measure