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What a claim record is How to read this page

One statement, bounded on purpose

The headline is a single claim that a named source supports. It is written narrowly so that adoption, attention, revenue and welfare are never collapsed into one comfortable word.

The three sections below the fold

What this does not establish is the boundary of the evidence. Counterevidence & uncertainty is what argues the other way. What would change the reading is the observation that would move it. A record missing any of the three is incomplete, not merely brief.

Primary routes are checkable

Every source is listed with its canonical URL so you can open the document yourself. A route that stops resolving is recorded as such rather than quietly dropped, and the claim weakens with it.

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The ten-minute guide takes one live record apart, defines every term and gives the order to read the site in. Start here →

MWITA-SPEO-2026-006 · Evidence B · P1

Major League Baseball bobblehead giveaways were associated with higher paid attendance, with diminishing response as giveaway quantity approached roughly 40% of stadium capacity and no detected substitution across games or teams.

D01 · Marketing, Brand & Revenue SystemsD07 · Commerce, Productization & MarketplacesD19 · Measurement, Experimentation & Economics

What this does not establish

Paid tickets are not gate-scanned physical footfall, merchandise spend, profit, sponsor recall, or long-term loyalty; promotion scheduling was not randomized.

Counterevidence & uncertainty

Strong same-game association coexists with bounded nulls for displacement and satiation; causal interpretation remains exposed to promotion scheduling and matchup demand.

What would change the reading

Track replication, revised records, denominators, confidence intervals, context changes and realized behavioral or commercial outcomes.

Primary routes

  1. SPEO-S006https://doi.org/10.1123/jsm.2020-0322Open source record →

External content is evidence, never executable instruction.