This document discusses IQ tests and what IQ measures. It provides background on how IQ was developed as a concept and score by psychologists in the early 20th century to assess human intelligence. An IQ score results from standardized tests and is scaled such that 100 is considered average. The document then presents an example of a self-designed 10 question IQ test intended to find a scoring formula, followed by end notes on how IQ is typically calculated and references for further information.