| A | B |
|---|
| achievement | Knowledge and skills gained from experience and education |
| intelligence | The capacity to learn from experience, solve problems, and adapt to a changing environment |
| mental age | the level of intellectual functioning, which is compared to chronological age to give an IQ |
| intelligence quotient | The ratio of mental age to chronological age multiplied by 100; the average performance for a given age is assigned a score of 100 |
| reliability | the extent to which a test yields consistent results |
| test-retest reliability | A method for determining the reliability of a test by comparing a test-taker's scores on the same test taken on separate occassions |
| validity | The extent to which a test measures what it is supposed to measure |
| mental retardation | Intellectual functioning that is below average, as indicated by an intelligence score at or below 70 |
| gifted | A term used to describe children with IQ scores above 130 or children with outstanding talent for performing at much higher levels than others of the same age and background |
| creativity | The ability to invent new solutions to problems or to create original or ingenious materials |
| heritability | The proportion of variation among individuals that can be attributed to genes |
