The term self-concept is a general term used to refer to how someone thinks about or perceives themselves. It is an important term for both Social Psychology and Humanism.
IQ stands for Intelligence Quotient. It is a score that combines the mental age of a person with his chronological age. For testing purposes, the mental age is determined by a series of standardized test questions, known as the IQ test. It is estimated that well-known scientist Albert Einstein had an IQ of 160 or more.
IQ tests were first used in France in 1904 to identify intelligent children. And since then, experts have estimated that the 18th Century German writer and poet Goethe had the highest IQ in history, at 210. The tests are not a measure of general knowledge, but of how the mind copes with reasoning problems and mental arithmetic. Normal IQ is from 85 to 115, and genius level starts at 145.