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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

The question we ask

Have you ever held a group back from notifications to measure what the messages actually add?

Limits

What we don’t claim

Sources

  • Hooked · Nir Eyal

    Ch.7

Source IDs: HK-TRG37

Book content is paraphrased, never quoted at length. Last verified October 24, 2026.

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