Stated vs Revealed Gap Report¶
Comparison report — instantiates Revealed Preference Validation Against Indifference Curves
Quantifies the gap between what people say they value and what their behavior reveals, broken out by segment and reported with the confidence the comparison actually supports.
People routinely misreport their own preferences — not from dishonesty but because a survey answer and a real purchase are produced by different machinery. Stated vs Revealed Gap Report puts the two side by side and measures the distance between them: the trade-off people claim in a survey versus the trade-off their behavior implies, quantified as a gap, split by the segments where it differs, and stamped with how confidently the comparison can be made at all. Its defining job is the measurement of divergence, not its explanation — it tells you how far stated and revealed preference part ways and for whom, and hands the question of why to other mechanisms.
Example¶
A utility surveys customers on green energy and finds strong stated demand: a large majority say they would pay a premium for renewable power. The revealed record tells a different story — when offered an opt-in green tariff at a modest surcharge, only a small fraction actually enrolled. The report quantifies this as a stated-versus-revealed gap: the claimed willingness-to-pay premium runs several times the revealed premium implied by uptake (illustrative). It then breaks the gap out by segment — near-zero among a small cluster of committed early enrollers whose words and actions align, but very wide among the broad middle whose stated enthusiasm never converts.
The report's contribution is a clean, segmented measurement: here is how far talk and behavior diverge, and it is concentrated in these groups. It deliberately stops short of explaining the gap — whether it is social-desirability bias in the survey, friction in the sign-up flow, or a genuine budget constraint is a separate investigation. It also attaches a confidence band, flagging that the survey sample and the enrollment window are thin enough that the gap's exact size should not be over-read.
How it works¶
- Align the two measures. Put the stated trade-off (from survey or expressed willingness-to-pay) and the revealed trade-off (from behavior) into the same units so they can be differenced.
- Compute the gap. Report the divergence between claimed and behavioral preference as a magnitude and direction, not a pass/fail.
- Segment the divergence. Break the gap out across groups, surfacing where words and actions align versus where they part sharply.
- Band the comparison. Attach the confidence the gap supports, given survey noise, behavioral sample size, and how comparable the two elicitations really are.
Tuning parameters¶
- Alignment rigor — how carefully stated and revealed measures are made commensurable. Loose alignment inflates apparent gaps that are really unit mismatches.
- Segmentation depth — how finely the gap is decomposed. Deeper cuts localize the divergence but thin each cell's data and widen its band.
- Gap metric — ratio, difference, or rank correlation between stated and revealed orderings; each dramatizes a different aspect of divergence.
- Confidence stance — how conservatively the band is set given the weaker of the two data sources.
- Reporting threshold — how large a gap must be before it is highlighted rather than treated as noise.
When it helps, and when it misleads¶
Its strength is that it makes a pervasive, expensive error measurable: organizations constantly plan around what people say they want, and this report quantifies exactly how far that diverges from behavior and in which segments, turning a vague worry into a sized, actionable number. Stated preference is cheap to collect and systematically optimistic; naming the gap is what keeps it from being trusted at face value.[n1]
Its failure mode is being read as an explanation rather than a measurement. A large gap is compatible with many causes — social-desirability bias, sign-up friction, budget constraints, a badly worded survey — and treating the gap itself as proof that "customers are lying" or "the survey is worthless" is the classic misuse. The report can also mis-size a gap when the two measures were never truly comparable. The guarding discipline is to present the gap strictly as a how far and for whom, carry its confidence band, and route the why to a mechanism built to diagnose causes.
How it implements the components¶
Stated vs Revealed Gap Report realizes the archetype's stated-behavior reconciliation layer:
stated_revealed_preference_comparison— its core output: the aligned, quantified gap between claimed and behavioral trade-offs.segment_specific_preference_map— it decomposes the gap across groups, mapping where words and actions align versus diverge.inference_confidence_band— it stamps the comparison with the confidence its noisiest input supports.
It does not diagnose why the gap exists — it neither inspects the environment for presentation confounds (choice_architecture_audit) nor runs a reframing intervention (counterfactual_option_probe); those causes belong to Choice Architecture Confound Audit and Preference Reversal Probe. This report measures the divergence; it does not explain it.
Related¶
- Instantiates: Revealed Preference Validation Against Indifference Curves — it is the check that confronts stated claims with revealed behavior and sizes the gap.
- Consumes: Marginal Substitution Estimator supplies the revealed trade-off that the stated claim is differenced against.
- Sibling mechanisms: Budget Set Reconstruction · Choice Bundle Normalization · Marginal Substitution Estimator · Indifference Region Visualization · Dominance Violation Scan · Revealed Preference Consistency Matrix · Preference Reversal Probe · Choice Architecture Confound Audit · Ethical Preference Inference Review
Editorial Notes¶
Form Classification¶
Form family: Analysis, Modeling & Optimization
Rationale: Stated vs Revealed Gap Report operates as an analytical, modeling, inference, comparison, or optimization procedure that derives insight or a solution because it quantifies the gap between what people say they value and what their behavior reveals, broken out by segment and reported with the confidence the comparison actually supports.
Independent corroboration: The frozen evidence defines Stated vs Revealed Gap Report as 'Quantifies the gap between what people say they value and what their behavior reveals, broken out by segment and reported with the confidence the comparison actually supports', so its operative form is Analysis, Modeling & Optimization.
Nearest alternative: Representation, Specification & Plan — Stated vs Revealed Gap Report includes features of a static representation, map, specification, schema, or prospective plan that externalizes information, but its defining operation is an analytical, modeling, inference, comparison, or optimization procedure that derives insight or a solution.
Review outcome: Independent reviewer agreement; medium confidence.
Origin Attribution¶
Primary origin: Economics & Finance
Origin pattern: Convergent development
Present-day reach: Universal
Rationale: Comparing declared values with preferences inferred from observed choices descends from revealed-preference economics. Samuelson's program explicitly replaces unobservable stated utility with observable demand behavior; behavioral economics interprets discrepancies.
Related originating lineages:
- Behavioral Economics — behavioral_economics contributes a distinct disciplinary practice to this mechanism's defining operation—Quantifies the gap between what people say they value and what their behavior reveals, broken out by segment and reported with the confidence the comparison actually supports—without displacing the selected primary historical lineage.
- Organizational & Management Science — Organizational design, management, and operational governance supplies a parallel or contributing lineage for the mechanism's defining operation: quantifies the gap between what people say they value and what their behavior reveals, broken out by segment and reported with the confidence the comparison actually supports.
- Psychology — Self-report and behavior diverge.
- Sociology & Anthropology — sociology_anthropology contributes sociology and anthropological study of institutions and social relations to this mechanism's defining operation—Quantifies the gap between what people say they value and what their behavior reveals, broken out by segment and reported with the confidence the comparison actually supports—without displacing the selected primary historical lineage.
- Statistics & Experimental Design — Segmented estimates require uncertainty.
Review resolution: The blind reviewers disagree on primary lineage (behavioral_economics versus economics_finance). Authoritative or primary research supports economics_finance as the best historical origin: Comparing declared values with preferences inferred from observed choices descends from revealed-preference economics. Samuelson's program explicitly replaces unobservable stated utility with observable demand behavior; behavioral economics interprets discrepancies. The cited Oxford Economic Papers, History of Classical Revealed Preference; Samuelson and Revealed Preference Theory directly supports the mechanism's defining operation. All independently supported contributing domains are retained without an arbitrary cap. origin_mode=convergent records lineage, while domain_reach=universal records later applicability separately from provenance.
Encyclopedia synthesis: The exact catalogued form synthesizes established practice rather than reproducing a single standard historical label.
Review outcome: Researched adjudication after independent review; high confidence.
Sources consulted:
- Oxford Economic Papers, History of Classical Revealed Preference
- Samuelson and Revealed Preference Theory
Notes¶
[n1] Hypothetical bias is the well-documented tendency for stated willingness-to-pay in surveys to exceed what people actually pay when money is on the line — a central concern in contingent-valuation research. It is precisely the systematic wedge this report is built to measure rather than assume away. ↩