Diagnostic question
Return rate after a reward
Measures whether users return more after a reward is shown, and whether that lift fades with cohort age.
ReturnStay
Plain label: reward lift question
Do users come back more often after a reward is shown to them, and is that lift fading in older cohorts?
Limits
What we don’t claim
- The Hook Model is a practical design tool, not a validated or complete theory of behavior.Hooked, Introduction
Sources
Book content is paraphrased, never quoted at length. Last verified October 24, 2026.
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