Diagnostic question · Hooked
What messages actually add
Checks whether the team has measured the lift from notifications against a holdout group.
Return
Plain label: notification holdout question
Have you ever held a group back from notifications to measure what the messages actually add?
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
Hooked · Nir Eyal
Ch.7
Source IDs: HK-TRG37
Book content is paraphrased, never quoted at length. Last verified October 24, 2026.
Your product
Find the stage your product is stuck in
Gamify It reads your product, picks the one move that matters at its stage, and sizes the test to your traffic. Connecting is free; a Pro subscription starts it.