Social Desirability Bias
Updated 2026-07-31
INTRODUCTION
English translation pending.
CORE DEFINITION
A response bias in which survey and interview subjects over-report socially approved behavior and under-report disapproved behavior, driven by impression management. It is strongest on moral, health, and consumption topics and larger in face-to-face or non-anonymous settings than in anonymous ones. The practical implication is that stated attitudes are weak evidence about actual behavior, and the gap widens as the topic becomes more evaluative.
SCAFFOLDING EFFECT
Reduce cognitive load
- Survey discount: treat stated virtue as an upper bound rather than a measurement. - Behavior over attitude: weight transaction and log data above any stated preference. - Question design: replace hypothetical willingness questions with verifiable reports of past behavior.
Anchor fast decisions
Self-reports are shaped by the desire to present a favorable identity, and this filtering often operates below conscious awareness. The respondent compares the answer against a social norm rather than against a memory, so the reported value drifts toward the norm. The drift grows with the perceived evaluativeness of the topic and the visibility of the answer to others.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Social-desirability_biasverified
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