Once a question about his IQ was set to Hans Jürgen Eysenck. It must be high enough, if I have invented this coefficient, the famous psychologist answered. He was not quite right. The idea of using tests for identifying the level of intellectual development was generated before his birth. However, it was Eysenck who made the whole world measure the capabilities of human brains, which brought fame, titles and money to him.
In 1916, psychologist Hans Jürgen Eysenck was born