G. Yu. Aizenk - British psychologist, one of the leaders of the biological direction in psychology, creator of the factor theory of personality, author of the popular intelligence test. K. Bartol is a professor of psychology, behaviorist, profiler, author of the world's most popular textbook on criminal psychology. How did people seriously support the idea of ​ ​ genocide of the Jews in the middle of the 20th century? Were they completely different people? We're not like that, are we? We're definitely better. People usually think so when studying the history of World War II, but the famous experiments of the 1960s and 1980s say the opposite. Students are divided into two groups, guards and prisoners, and offered to play prison. A few days later, the experiment had to be completed ahead of schedule due to cases of unjustified cruelty. The kindest religious housewives are offered to shock a person for erroneous answers, and almost 100% of the subjects bring the current discharges to fatal values.