Dear Edbert! You know that the brain and cognitive functions are surprisingly complex elements of the nervous system. You understand that the difficult is difficult to determine by simple methods. Such methods will always be accompanied by errors.

This is evidenced by the history of such assessments in the life of geniuses. Thomas Edison was considered mentally retarded in school. The music teacher called Beethoven mediocre. Einstein did not speak until four years. Dmitry Mendeleyev had poor grades in chemistry. Father Auguste Rodin considered him an idiot. I propose to look at two manuscripts in an Attachment the authors of which try to avoid mistakes in determining cognitive abilities.