After they had first agreed to display a 3-inch "be a safe driver" sign, california home owners were highly likely to permit the installation of a very large and unattractive "drive carefully" sign in their front yards. this best

This best illustrates the Foot-In-The-Door phenomenon

Explanation:

This phenomenon occurs when after complying to a small request, a person  agrees to a larger request.

In the example above, a company used a foot-in-the-door tecnique (which eventually gave way to the phenomenon) to get an agreement with the community. Probably, hadn't they used this tecnique, the community wouldn't have agreed to the installation of the unattractive, larger sign.

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