Definition
A close cousin of hook rate, thumb-stop measures visual interruption power - motion, faces, bold claims in frame one. Feeds reward it ruthlessly: the average user decides in under two seconds whether your ad exists.
Why it matters
Designing for the pause, not the watch, restructures creative priorities - product beauty shots lose to pattern-breaking openers far more often than brands expect.
Benchmarks
Judge relative to account baseline, not absolutes - verticals vary wildly
All glossary terms