Unconsciously learning task-irrelevant perceptual sequences |
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| Authors: | Xiuyan Guo Shan Jiang Hongyi Wang Lei Zhu Jinghua Tang Zoltan Dienes Zhiliang Yang |
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| Institution: | 1. School of Psychology and Cognitive Science and Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai, China;2. School of Social Administration, Shanghai University of Political Science and Law, Shanghai, China;3. School of Psychology and Cognitive Science, East China Normal University, Shanghai, China;4. Department of Psychology, Fudan University, Shanghai, China;5. Department of Psychology, Nanjing University of Chinese Medicine, Shanghai, China;6. School of Psychology and Sackler Centre for Consciousness Science, University of Sussex, Brighton BN1 9QH, UK |
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| Abstract: | We demonstrated unconscious learning of task-irrelevant perceptual regularities in a Serial Reaction Time (SRT) task in both visual and auditory domains. Participants were required to respond to different letters (‘F’ or ‘J’, experiment 1) or syllables (‘can’ or ‘you’, experiment 2) which occurred in random order. Unbeknownst to participants, the color (red, green, blue or yellow) of the two letters or the tone (1–4) of the syllables varied according to certain rules. Reaction times indicated that people indeed learnt both the color and tonal regularities indicating that task-irrelevant sequence structure can be learned perceptually. In a subsequent prediction test of knowledge of the color or tonal cues using subjective measures, we showed that people could acquire task irrelevant knowledge unconsciously. |
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