When someone is asked to agree to something on the basis of incomplete information and is later told the full story it is referred to as the "that's-not-all"
technique.

Name: When someone is asked to agree to something on the basis of incomplete information and is later told the full story it is referred to as the "that's-not-all" technique.
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Question

Quizplus · Accepted Answer

The "that's-not-all" technique involves making an offer and then improving it before the person can respond, not withholding information.

When Someone Is Asked to Agree to Something on the Basis