Before the decision, the value of each thing is roughly similar to the decision maker's mind, and it is difficult to determine the advantages and disadvantages; but after making a choice, the decision maker's attitude evaluation of these things has changed. effect. According to the above definition, Which of the following phenomena are post-decision effects:. ['A staff member has no idea how to stay. After some consideration, he thinks that staying will face many complex relationships. It is better to reopen a new world.', 'A lady is difficult to choose between two brands of mobile phones that have their own advantages and disadvantages. In the end, she considers choosing one of them from an economic point of view.', 'A teacher is hesitant to choose A or B to participate in the competition. The class leader recommends choosing B. Afterwards, the teacher thinks that choosing B is completely correct because B eventually won the championship.', "A student hesitated to report to University A or University B when he volunteered. In the end, he followed the teacher's suggestion and chose University A. Since then, he feels that University A is better than University B."]