Intelligence can be assessed using intelligence tests, which provide a score that can be compared to the performance of others the same age. Early intelligence tests developed the concept of mental age, where a child's performance is compared to the average performance of children of different ages. Intelligence Quotient (IQ) scores were developed to quantify intelligence as a ratio of mental age to chronological age. Modern IQ tests assign an average performance of 100. Intelligence involves the ability to learn, solve problems, and adapt to new situations. It is a general mental capability that involves different dimensions of performance. While general intelligence may underlie performance, there are also theories of multiple types of intelligences like social and emotional intelligence. Intelligence involves both inherited and environmental