What is the psychological function of constellations?

Constellation is called Barnum effect in psychology. Barnum effect was first proved by psychologist bertram Fowler in 1948.

Verification of Barnum Effect

After he finished the Minnesota Multiphasic Personality Questionnaire for a group of people, he took out two results and asked the participants to decide which one was their own. In fact, one is the result of the participants themselves and the other is the average result of most people's answers. Participants actually thought that the latter expressed their personality characteristics more accurately.

A famous magician named Shoman barnum commented on his performance, saying that he was very popular, because there were elements in the program that everyone liked, so he was cheated every minute. People often think that a general description of personality reveals its own characteristics very accurately, which is called Barnum effect in psychology.