What it looks like
A classic example comes from a car dealership. The buyer is quoted an attractive price, agrees, starts the paperwork, and begins fitting the car into her life. Then she finds out that the figures were wrong and the price is higher.
Logically, she should stand up and leave: the terms have changed, and she has no obligation. But she has already rearranged her plans around the purchase, imagined herself as the owner, and explained the decision to people close to her. Canceling everything feels more costly than paying extra.
An attractive offer. The terms are clearly appealing, so walking away is difficult.
Agreement and first steps. Signing, paperwork, planning. The decision starts to feel like your own.
The terms get worse. An extra charge, delay, or restriction appears. The reason is always external.
The person agrees. She is holding on not to the terms, but to her own decision.
The second step is the key one. Before you agree, worsening the terms simply cancels the deal. After you agree, the desire to be consistent kicks in: backing out means admitting that your decision was wrong.
The technique ties you not to the offer, but to your own choice. You defend the "yes" you have already given, not the benefit.
What experiments showed
Researchers tested the technique in a laboratory. Students were invited to take part in a study: some were told right away that it started at seven in the morning, while others were told only after they agreed. The second group had noticeably more people who agreed and showed up.
Importantly, people in the second group were explicitly offered the chance to decline after learning the time. Almost no one took it. The agreement they had made a minute earlier was already working as a commitment to themselves.
It differs from the related foot-in-the-door technique because it involves the same deal. It is not "a small request first, then a bigger one," but "the same thing, with worse terms."
This happens far beyond sales: in hiring, when duties that were never mentioned appear after you agree; in services, when the final bill differs from the quoted price; and in agreements with people close to you.
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Sources
- The technique has been described in studies of influence: agreeing to favorable terms increases the likelihood of accepting worse terms even when there is an explicit opportunity to decline