B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Dated
78%
78% -- task success rate for usability testing participants (2011)
A 2011 study by Jeff Sauro found that the average task success rate in usability testing is 78%.
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Lighthouse Research Team
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Evidence graded
Value
78%
Unit
Percentage
Data Vintage
2011
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
Jeff Sauro
Primary
Tier B
https://www.uxtweak.com/usability-testing/metrics/ ↗
Source Article
Usability Testing Metrics
Usability testing metrics are essentially used to quantify the usability of your product, evaluate it based on different criteria and use this data to inform further design iterations as well as compare results and track success.
They help to make sense of the data obtained in usability studies and …
Original Research
Jeff Sauro
· Original study ↗
Methodology
Aggregate benchmark from Jeff Sauro's 2011 study of task-based usability tests
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
usability testing participants: 78% task success rate. Source: Jeff Sauro (2011). Via Lighthouse Intelligence -- https://lighthousedata.io/data/average-task-success-rate-usability-testing-2011
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<blockquote cite="https://lighthousedata.io/data/average-task-success-rate-usability-testing-2011" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>78%</strong> -- task success rate for usability testing participants<br><small>Source: Jeff Sauro (2011) · <a href="https://lighthousedata.io/data/average-task-success-rate-usability-testing-2011" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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