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Updated: Apr 5, 2026

Creating Objects and Object Categories for Studying Perception and Perceptual Learning
Published on: November 2, 2012
Associative learning with and without perceptual awareness
1Universidad de A Coruña.
Background:
The relationship between awareness and associative learning is a key controversial issue that remains to be elucidated. An experiment was designed to assess associative learning with and without perceptual awareness.
Method:
Participants received repeated trials of two compatible stimuli sequences (S1A → S2A and S1B → S2B ), where S1 was a masked stimulus, and S2 an imperative stimulus for a reaction time (RT) task. After the acquisition phase, some probe trials of incompatible stimuli sequences (S1A → S2B and S1B → S2A ) were inserted among the compatible sequence trials during two testing sessions. Subsequently, subjects were classified as perceptually aware or perceptually unaware by means of a forced-choice identification task that was administered at the beginning and end of the experiment.
Results:
The results showed perceptually unaware participants responded faster to compatible than to incompatible stimuli sequences. However, no priming effect was observed in aware participants.
Conclusions:
These results are discussed in terms of an S-R associative mechanism and provide strong evidence of unconscious associative learning.
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