We examined the effects of negative (anger, sadness, and disgust) and positive (hap- piness) stimuli on face recognition. We adopted the flicker paradigm composed of change-detection (Experiment A) and memory (Experiment B) tasks. In the change- detection task, each trial cycled through two displays separated by a blank display until a response was made. The participants ( n = 20) were asked to attend to and detect the changed face. In the memory task, each trial cycled through the memory and blank displays for 10s. In accordance with the flicker paradigm, the cueing stimulus appeared in the location of a single test item for 1000 ms. The participants were asked to memorize and later recall which faces were presented in the cued location. Negative face advantage was observed in the change-detection task, whereas the positive face advantage was observed in the memory task. These results suggest that the detection process modulates the negative face advantage, while the memory process modulates the positive face advantage.