In the experiment, a group of scientists under the leadership of Xiao Qing Hu failed to prove: the dream teaches people tolerance. During sleep smoothed the relationship of man to his environment, and effects on the brain in a deep phase can affect the mind.
Scientists showed volunteers pictures of women and their quotes about math and science. Another group of subjects were shown pictures of black men with expressive signatures.
Next, the volunteers were asked to sleep for 1.5 hours under the supervision of experts. During the phase of deep sleep in the room consisted of pre-recorded sounds. After waking up the people became more tolerant of blacks and women in the exact disciplines.
According to the data obtained, tolerance of participants increased by 20%.