Case file
Contrast Effect
- Filed under
- Too Much Information
The charge
Something looks better or worse depending on what it is compared with immediately before or beside it. Perception is relative to the local comparison set.
How it operates
Recent stimuli create a temporary baseline, so the same target is judged against a shifting standard. Order and adjacency then distort evaluation.
Logged incidents
- Incident 01
A solid candidate looks weak after an exceptional interviewee and strong after a poor one.
- Incident 02
A mid-tier pricing plan looks cheap when shown next to a premium plan and expensive when shown next to a basic plan.
- Incident 03
A roadmap item seems minor after a discussion about a massive replatforming effort and major after a discussion about tiny UX fixes.
What to watch for
Ask yourself: 'Would I rate this differently if I saw it in a different order or next to different comparators?'
Recommended action
Randomize review order, use independent scoring before comparison, and calibrate with fixed benchmark examples. These steps reduce sequence-driven distortion.
Known associates
- AnchoringAn initial number, label, or piece of information pulls later estimates toward it, even when it is arbitrary…
- Conservatism BiasWe revise beliefs too slowly when new evidence arrives.
- Distinction BiasWhen options are compared side by side, we exaggerate small measurable differences that matter little in…
- Focusing effectWhen one salient detail is in focus, it pulls judgment toward itself and crowds out other relevant factors.
- Framing EffectEquivalent information leads to different choices depending on how it is worded or packaged.
- Money IllusionWe think in nominal money terms and ignore inflation, purchasing power, or real value.
Source of record