In recent years researchers have learned that the brain, which is devided into left and right hemispheres, has assigned different mental tasks to one side or the other. Highly intelligent people use both their left and right brain in equal balance. Most people, becase of social emphasis, schooling and parental training are left-brain dominant! Thay are taught from an early age to develop such skills as: speech, language, writting, use of numbers and logic, letting the skills o the right brain, wich controls visual-spatial concepts, creativity, mechanics and ESP and intuition, become lazy and underproductive. That explains why we do well on certain mental tasks and poorly on others.