B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
3%
3% -- purchase rate with 24 options for shoppers in jam study (2026)
Shoppers shown 24 jam options purchased 3% of the time in the Iyengar and Lepper jam study.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
3%
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
75
Source Trust
60
Citation Chain
60
Independence
30
Methodology
45
Freshness
95
Source
Iyengar & Lepper
Primary
Tier B
https://kirro.io/product-page-optimization ↗
Source Article
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Original Research
Iyengar & Lepper
· Original study ↗
Methodology
Iyengar & Lepper jam study
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
shoppers in jam study: 3% purchase rate with 24 options. Source: Iyengar & Lepper (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/jam-study-24-options-3
HTML Embed
<blockquote cite="https://lighthousedata.io/data/jam-study-24-options-3" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>3%</strong> -- purchase rate with 24 options for shoppers in jam study<br><small>Source: Iyengar & Lepper (2026) · <a href="https://lighthousedata.io/data/jam-study-24-options-3" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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