Oddly Wired
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perception

Your judgment is skewed by what you saw before.

The contrast effect describes how the perception of an object is changed by its comparison to a preceding object, a phenomenon explored in social psychology regarding attractiveness judgments.

The citation Kenrick and Gutierres (1980) refers to a specific study on social perception (attractiveness), not a general economic or pricing study.

Your standards shift with every new experience.

Where this comes from

Study
Kenrick and Gutierres (1980)
What the check found
The definition of the contrast effect is correct in general psychology, but the cited paper focuses on attractiveness judgments in social contexts rather than product pricing.
Confidence
Solid, with limits

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.