As a lab activity in her Perception class, Laura participates in an experiment in which an initial stimulus is flashed very briefly and is immediately covered by another stimulus. Laura's response to a subsequent question clearly indicates that she was influenced by the initial stimulus although she does not recall seeing it. Covering a very brief stimulus immediately with another stimulus is an example of _____, and it has been used to test _____.

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Visual masking is a technique where a visual stimulus is quickly followed by another, masking the perception of the first. This method is used to explore reinforcement without awareness, as individuals can be influenced by stimuli they do not consciously recall seeing.

As a Lab Activity in Her Perception Class, Laura Participates