| A | B |
|---|
| intelligence | the abilities to learn from experience, to think rationally, and to deal effectively with the environment |
| achievement | knowledge and skills gained from experience |
| mental age | shows the intellectual level at which a child is functioning |
| intelligence quotient | is a number that reflects the relationship between a child's mental age and his or her actual, or chronological, age. |
| reliability | refers to a test's consistency |
| test-retest reliability | is determined by comparing scores earned by the same person on the same test taken at different times |
| validity | a test that measures what it is supposed to measure |
| mental retardation | Having an IQ score at or below 70 |
| gifted | IQ scores of 130 and above and possess outstanding talent or the potential for performing at remarkably high levels of accomplishment when compared with other people of the same age, experience, or environment |
| creativity | the ability to invent new solutions to problems or to create original or ingenious materials |
| heritability | the extent to which variations in a trait from person to person can be explained by genetic factors |
