Reverse induction refers to the measures or propaganda activities adopted by the government, the media and other subjects. In actual social life, not only did not receive the expected results, but led to a large number of social phenomena contrary to expectations. According to the above definitions, Which of the following are reverse induced:. ['In order to let the audience take off their hats, a theater issued a notice on the screen: "This hospital allows the elderly to wear hats to watch. " As a result of the announcement, many audiences took off their hats.', 'A certain unit required employees to dress uniformly, but as a result, there were strong objections from many female employees in the unit.', "Water supply is relatively tight in the hot season. A city's water company posted a notice informing the public that the water supply will not be stopped in the near future. As a result, many citizens store large quantities of water in their homes.", 'A TV station broadcast a lecture on the prevention of mental illness. Many citizens took the seat and felt that they had mental illness.']