B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
22%
22% -- skill proficiency increase for workplace learners (Practica Learning studies) (2026)
Deliberate practice that isolates conversational subskills drives up to a 22% increase in real-world skill proficiency with a few hours of targeted rehearsal.
- The source specifies an increase of 'up to' 22%
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
22%
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
bebrilliantpresentationgroup.com
Primary
Tier C
https://bebrilliantpresentationgroup.com/the-difference-between-presentation-practice-and-real-prepa… ↗
Source Article
The Difference Between Presentation Practice and Real Preparation
Original Research
bebrilliantpresentationgroup.com
· Original study ↗
Methodology
Cited workplace studies by Practica Learning; methodology not detailed
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
workplace learners (Practica Learning studies): 22% skill proficiency increase. Source: bebrilliantpresentationgroup.com (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/deliberate-practice-skill-proficiency-22
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<blockquote cite="https://lighthousedata.io/data/deliberate-practice-skill-proficiency-22" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>22%</strong> -- skill proficiency increase for workplace learners (Practica Learning studies)<br><small>Source: bebrilliantpresentationgroup.com (2026) · <a href="https://lighthousedata.io/data/deliberate-practice-skill-proficiency-22" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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