If you accept a small request, you may accept a bigger request.

The entrance effect means that once you accept a trivial request from others, you may accept a bigger request in order to avoid cognitive disharmony or give others a consistent impression.

This phenomenon is like climbing the threshold step by step, climbing higher is easier and smoother.

In interpersonal communication, when we ask someone to do something bigger and worry that he won't do it, we can ask him to do something similar and smaller first.

Hong Zicheng also talked about this issue in the Ming Dynasty. He said in "Caigen Tan": "You should not be too strict in attacking evil, but think about it; Teach people not to be too good, but to be obedient. "

In education, teachers and parents first set a small threshold for their children, which can be reached by jumping, and then make plans with them. Once the child behaves well, it will give timely secondary feedback, slowly cultivate the child's self-confidence and improve the child's self-esteem level.

This effect comes from an experiment by American social psychologists Friedman and Fries.

The experimenter asked the assistant to go to two residential areas to persuade people to put up a big placard that said "Drive carefully" in front of their homes. This request was made directly to the people in the first residential area, but it was rejected by many residents, and only 17% of the requested people were accepted.

In the second residential area, it was easy to ask residents to sign a petition in favor of safe driving, and almost all the people who were asked complied with it. A few weeks later, they were asked to put up a vertical card. As a result, the respondents accounted for 55% of the respondents.