Foot-in-the-Door Technique
Agreement to a small request can slightly increase compliance with a later, larger related request.
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How teams put it to work.
Examples identified in our interface teardowns, linked back to the full product journey.

After music-preference setup, Spotify asks to link an external Alexa account. This is a new-scope request involving another service, so it needs a fresh informed decision. “Maybe later” provides a decline route; the screenshot does not show that earlier choices increased agreement.
View Spotify first-time setup: preference collection before playback →
After a completed lesson, Duolingo asks for profile creation and frames it as preventing loss of progress. This is an escalation from trial use to an account request; the close route remains visible, but earlier expectation-setting and neutral storage information are needed.
View Duolingo onboarding: course setup, first lesson, streaks, profile and Super offer →