Contrast Effect
Judging things based on comparison to adjacent options
What is it?
The contrast effect is a perceptual phenomenon where our evaluation of something is altered by comparison to something recently experienced. Lukewarm water feels cold after holding ice, and warm after holding a hot cup. This effect extends from physical perception to judgments about people, products and situations. In hiring, a mediocre candidate can seem excellent after a series of weak ones, and an excellent candidate may seem merely average after an outstanding one. Real estate agents may exploit this by showing overpriced or undesirable properties first to make the target property seem like a bargain. The contrast effect is related to but distinct from anchoring: anchoring involves a reference point for a numerical estimate, while contrast shifts qualitative perception. The effect means evaluations are rarely absolute; they tend to be relative to what came just before. This creates problems wherever sequence affects judgment, such as interview order or presentation order. Mitigating the contrast effect requires evaluating options against absolute criteria rather than each other, randomizing sequences when possible, building in breaks between evaluations, and remembering that recent experiences color current perceptions.
Example
A mediocre candidate seeming excellent after interviewing several weak ones. A house seeming like a bargain after viewing overpriced ones. Food tasting bland after spicy dishes.
References
Sherif, M., Taub, D., & Hovland, C. I. (1958). Assimilation and Contrast Effects of Anchoring Stimuli on Judgments. Journal of Experimental Psychology, 55(2), 150-155.
Kenrick, D. T., & Gutierres, S. E. (1980). Contrast Effects and Judgments of Physical Attractiveness: When Beauty Becomes a Social Problem. Journal of Personality and Social Psychology, 38(1), 131-140.
How to Prevent It
Doxa uses AI and can make mistakes. How it's built
Am I evaluating this on its own merits?
Would I rate this differently in a different sequence?
Is my judgment affected by what I just experienced?
What would I think if this were the first thing I saw?
Am I comparing to an extreme example that skews my perception?
Use absolute criteria, not just comparisons.
Randomize the order of evaluation when possible.
Take breaks between evaluations to reset perspective.
Write down your score and notes right after each option, before seeing the next one.
Before a round of reviews, look again at a few reference examples of a strong, average and weak result.