Présentation de l'éditeur
Nothing more common but at the age of 23 he changed hand to exclusively use the left hand. He practiced this ignored hand, solved many problems and discovered a lot on handedness (laterality). Obviously, if he changed hand it is because not everything in him was perfect.
We explain with very original ideas what laterality is, the cause of heterosexuality and homosexuality and the simple reason for stuttering and splattering.
By writing this book over the course of several years a lot suddenly became clear. Two indispensable and easy tests permit to detect the laterality at birth (which brain hemisphere is dominant ?), which is not more chosen than the gender.