B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
15%
15% -- subjective impression improvement for content with statistics, quotations, citations in AI answers (2026)
Adding statistics, credible quotations, and source citations produced relative improvements of 15% to 30% on the study's subjective impression metric.
- The study tested content that had already been placed within the engine's available source set.
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
15%
Unit
Percentage
Data Vintage
2026
Entity
Sample Size
10,000
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
95
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Princeton, Georgia Tech, Allen Institute for AI, IIT Delhi
Primary
Tier A
https://www.ayomidejoseph.com/blog/ai-citation ↗
Source Article
The Citation Economy: Which Sources AI Engines Cite, and What That Means for Where You Invest
Original Research
Princeton, Georgia Tech, Allen Institute for AI, IIT Delhi
· Original study ↗
Methodology
GEO study; range 15-30%, midpoint used
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
content with statistics, quotations, citations in AI answers: 15% subjective impression improvement. Source: Princeton, Georgia Tech, Allen Institute for AI, IIT Delhi (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/geo-subjective-impression-improvement
HTML Embed
<blockquote cite="https://lighthousedata.io/data/geo-subjective-impression-improvement" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>15%</strong> -- subjective impression improvement for content with statistics, quotations, citations in AI answers<br><small>Source: Princeton, Georgia Tech, Allen Institute for AI, IIT Delhi (2026) · <a href="https://lighthousedata.io/data/geo-subjective-impression-improvement" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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