Audit person-judgments for prototype substitution
Check whether a judgment about a person is based on their actual behavior or on resemblance to a type.
Key takeaways
- What it is: Check whether a judgment about a person is based on their actual behavior or on resemblance to a type.
- Why it works: The representativeness heuristic underpins stereotyping: a person is assigned the traits of the group they resemble, regardless of individual evidence. This is cognitively efficient — group base rates are often real — but it misfires when group variance is high, when the individual is atypical, or when the "group" is a cultural stereotype rather than an empirical category. Deliberately auditing for prototype substitution ("Am I seeing this person or their template?") activates individuating-information processing.
- Evidence: Backed by observational / correlational evidence.
- Avoid: Seeking individuating information but then discounting it when it doesn’t fit the prototype ("they’re just an exception"), which is the representativeness heuristic reasserting itself.
Why it works
The representativeness heuristic underpins stereotyping: a person is assigned the traits of the group they resemble, regardless of individual evidence. This is cognitively efficient — group base rates are often real — but it misfires when group variance is high, when the individual is atypical, or when the "group" is a cultural stereotype rather than an empirical category. Deliberately auditing for prototype substitution ("Am I seeing this person or their template?") activates individuating-information processing.
How to do it
- 1When forming an impression of a person, write down the specific behaviors or statements you observed.
- 2Ask: "Would I hold this judgment if the person fit a different prototype?"
- 3Identify whether your conclusion follows from their individual evidence or from group membership.
- 4Seek one individuating data point that is inconsistent with the prototype to test the flexibility of your judgment.
What the evidence says
ObservationalResearch on individuation (Locksley et al., 1980; Kunda & Thagard, 1996) shows that providing individuating behavioral information can override stereotype-based judgments, but only when that information is concrete and unambiguous.
Honest caveat: Stereotypes often encode real statistical patterns; the problem is treating them as certainties about individuals rather than probabilistic base rates. This practice corrects overconfidence, not the use of base rates.
- — Locksley, Borgida, Brekke & Hepburn (1980), Sex stereotypes and social judgment, Journal of Personality and Social Psychology
Common mistake
Seeking individuating information but then discounting it when it doesn’t fit the prototype ("they’re just an exception"), which is the representativeness heuristic reasserting itself.
IX Coach helps you distinguish what specific evidence about a person you actually have from the category-level inference you’re making, keeping your assessments grounded in observed behavior.
Practice this with IX Coach →