What Is an IQ Score?

An Intelligence Quotient (IQ) score is a standardized measure used to assess human intelligence. It reflects a person's ability to reason, solve problems, and understand complex ideas compared to others in the same age group. Most IQ tests are designed so that the average score is 100, with the majority of people scoring between 85 and 115. While no test can capture the full range of human intelligence, IQ scores can offer useful insight into cognitive strengths and weaknesses.