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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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MWITA-ELO-2026-007 · Evidence A · P1

Across 70 randomized experiments on a ticket-resale platform, emailed discounts increased average expenditure by $3.03, or 37.2%, during the promotion window and by $1.55 the following week; about 90% of the promotion-window gain occurred without offer redemption.

What this does not establish

Expenditure is not contribution margin, and a nonredeemed purchase after an email is not proof of a specific psychological advertising mechanism. Ticket resale, discount depth, event demand and short windows limit transfer.

Counterevidence & uncertainty

Most incremental spend did not use the discount code, contradicting redemption-only attribution and showing why a randomized holdout changes the measured campaign value.

What would change the reading

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

Primary routes

  1. ELO-S007https://doi.org/10.1287/mnsc.2016.2450Open source record →

External content is evidence, never executable instruction.