a classic set of eight tests to determine the Intellectual Quotient (IQ), developed by Hans Jürgen Eysenck and adapted in the USSR by Professor F. Gorbov. The first five are so-called general tests, designed to determine the general level of ability. They use verbal, numerical and graphic material in combination with various ways of formulating and presenting tasks. For those who want to learn a little more about their capabilities, the set includes three special tests: verbal, numerical and visual-spatial. They will help to get a more complete picture of the nature and structure of mental abilities.