B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
9%
9% -- adoption rate for European Railroad seat reservations (2026)
Before implementing seat reservations as the default option during ticket purchasing, the seat reservation adoption rate for a European railroad company was 9%.
- Unattributed case study
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
9%
Unit
Percentage
Data Vintage
2026
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Behavioral economics research (unattributed)
Primary
Tier C
https://www.leadalchemists.com/marketing-psychology/cognitive-biases-marketing/default-effect/ ↗
Source Article
Guide to The Default Effect in Marketing: Description, Psychology, and Examples - Quality Lead Generation From The Lead Alchemists Agency
Guide to The Default Effect in Marketing: Description, Psychology, and Examples
What Is The Default Effect?
The Default Effect is the tendency for people to favour pre-selected options, even when the alternatives on offer are objectively better choices for them. This powerful cognitive bias explains…
Original Research
Behavioral economics research (unattributed)
· Original study ↗
Methodology
Range/endpoints from cited case study; value represents the after-default adoption rate (baseline 9%)
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
European Railroad seat reservations: 9% adoption rate. Source: Behavioral economics research (unattributed) (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/default-seat-reservations-adoption-9-to-47
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<blockquote cite="https://lighthousedata.io/data/default-seat-reservations-adoption-9-to-47" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>9%</strong> -- adoption rate for European Railroad seat reservations<br><small>Source: Behavioral economics research (unattributed) (2026) · <a href="https://lighthousedata.io/data/default-seat-reservations-adoption-9-to-47" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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