In 1975, Robert Cialdini and colleagues demonstrated a counterintuitive compliance technique: making a very large request first dramatically increases compliance with a smaller request that follows — even though the smaller request is what you actually wanted all along.

The Experiment

Researchers asked people to volunteer at a juvenile detention center for two hours per week for two years. Almost everyone refused. They then asked the same people to take a group of juvenile delinquents on a two-hour zoo trip. 50% agreed.

A control group asked only about the zoo trip had a 17% agreement rate.

Why It Works: Reciprocal Concessions

When the requester backs down from the large request, the target perceives this as a concession — and feels social pressure to reciprocate with a concession of their own (accepting the smaller request).

Contrast With Foot-in-the-Door

The foot-in-the-door technique starts with a small request to build commitment, then escalates. Door-in-the-face starts large and retreats. Both work through different psychological mechanisms.

Applications

Negotiation, sales, fundraising, and any persuasion context where you want compliance with a specific request.

Reference:

Wikipedia: Door-in-the-Face Technique

https://en.wikipedia.org/wiki/Door-in-the-face_technique