Homeostasis also plays a part in what researchers call the prevalence-induced concept change effect. Suppose that you are asked to identify whether a… - Gad Saad

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Homeostasis also plays a part in what researchers call the prevalence-induced concept change effect. Suppose that you are asked to identify whether a dot is blue. This should not depend on how many blue dots you've previously been exposed to-but it does. When there are fewer blue dots, people will code purple dots as blue. Researchers replicated this finding using pictures of threatening faces. When participants were shown fewer threatening faces, they judged neutral faces as threatening. In short, I posit that this is a form of homeostasis, namely people are driven to maintain the frequency of a stimulus at a set level, even if they have to engage in perceptual distortions to do so.