B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
11%
11% -- happiness increase rate for shoppers receiving discounts (2025)
People who received discounts experienced an 11% increase in overall happiness compared to those who did not.
- Self-reported rating on a 1-10 scale following shopping
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
11%
Unit
Percentage
Data Vintage
2025
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
notch.financial
Primary
Tier B
https://www.notch.financial/blog/restaurant-promotions-ideas-data ↗
Source Article
Restaurant Promotions: Deals, Discounts & Specials | notch
There’s hard evidence that shows restaurant promotions can get more guests through your doors and more dollars in your tills. But just running a promotion for the sake of it or at random doesn’t guarantee success for your restaurant. You’ll want to have a look at the data to get the best ideas for r…
Original Research
notch.financial
· Original study ↗
Methodology
Physiological study; participants also rated happiness on a 1-10 scale
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
shoppers receiving discounts: 11% happiness increase rate. Source: notch.financial (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/discount-happiness-increase
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<blockquote cite="https://lighthousedata.io/data/discount-happiness-increase" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>11%</strong> -- happiness increase rate for shoppers receiving discounts<br><small>Source: notch.financial (2025) · <a href="https://lighthousedata.io/data/discount-happiness-increase" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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