Analyzing this example using a Gestalt perceptual principle, the noisy environment is an example of ground and his teacher's voice is an example of figure.
<h3>Ground and figure in Gestalt principle</h3>
According to the Gestalt perceptual principle, we can select what to focus on in a way that makes it seem that things, people, or other stimuli are in the background or in the foreground.
In the case described in the question, William is focusing on the teacher's voice, which means he perceives it as the figure or the foreground. On the other hand, William is tuning out the noisy environment, which means he perceives it as the background or simply ground.
Learn more about Gestalt here:
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