Nelson Cowan
American psychologist who refined Miller's working memory estimate in 2001, arguing the true functional capacity is closer to 4 chunks.
The Forgetting Curve in Workshops
Your workshop isn't failing because participants aren't committed. It's failing because memory decay was never engineered out of the design.
The 80/20 Workshop Engagement Ratio
The 80/20 engagement ratio is a principle stating that participants should be actively working with material for approximately 80% of a live session.