The progress of science is sometimes based on persecution. Below, I will take a look at the four most famous secret experiments in history with you.

1, on the influence of praise and blame on people's growth

1939 In Iowa, a professor conducted a secret experiment at the University of Iowa. The purpose of the experiment is to prove that praise and blame can have a strong psychological influence, so he selected 22 orphans and divided them into two groups. One group of children will always be praised for what they say, while the other group will always be criticized for what they say. Finally, the experimental results are very shocking. In the blamed group, many children have language barriers, and they still can't speak fluently when they grow up, and some even can't speak at all. After the secret experiment was exposed, the professor's inhuman behavior was criticized, and the University of Iowa came out to apologize publicly.

2. The effect of radioactivity on cancer

1960, the us department of defense sponsored a radiation experiment. The subjects of the experiment are cancer patients, mostly poor or black (racial discrimination is still serious). What is infuriating is that the hospital that carried out the task did not inform these patients, and even directly conducted the whole-body radiation experiment on them without their consent, and lied to them that it was a new and effective treatment method. According to a doctor who performed the task at that time, in order to avoid being sued by the patient, the full name of the patient was not written in the experimental report at all, only the initials of the surname were used.

3. Conduct mental experiments on white homosexuals, and even force transsexuality.

From 65438 to 0970, there were many white gay soldiers in South Africa's army. Later, the South African government gave them compulsory psychiatric treatment in an attempt to change their sexual orientation. If the treatment fails, they will be sent to a military hospital for sex-change surgery. The surgical methods are inhuman, including chemical castration, electric shock and other medical experiments (the bad nature is far more than Yang Yongxin, a geomagnetic storm soldier). Unfortunately, these victims are very young, about 65433 years old.

4. Study the influence of sexually transmitted diseases on people.

1932 to 1972, hospitals in Alabama, USA, conducted an experiment on sexually transmitted diseases. The experimental subjects were some black patients with syphilis. The hospital tricked these patients into treating them, but in fact, the purpose of the experiment was to observe what harm syphilis would do to the human body without treatment, so all the drugs given to patients were fake placebos, and only a few people survived after the experiment.

PS: All harmful experiments should not be done on human bodies, especially in the case of deception and concealment. Those who suppress or even destroy human nature will come to no good end.