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Module 38
UNIT 5 Assessing Intelligence
Term | Definition |
---|---|
intelligence test | a method for assessing an individual's mental aptitudes and comparing them with those of others, using numerical scores. |
achievement test | a test designed to assess what a person has learned. |
aptitude test | a test designed to predict a person's future performance; aptitude is the capacity to learn. |
mental age | a measure of intelligence test performance devised by Binet; the level of performance typically associated with children of a certain chronological age. Thus, a child who does as well as an average 8-year-old is said to have a mental age of 8. |
Stanford-Binet | the widely used American revision (by Terman at Stanford University) of Binet's original intelligence test. |
intelligence quotient (IQ) | defined originally as the ratio of mental age (ma) to chronological age (ca) multiplied by 100 (thus, IQ=ma/ca x 100). On contemporary intelligence tests, the average performance for a given age is assigned a score of 100. |
Wechsler Adult Intelligence Scale (WAIS) | the WAIS and its companion versions for children are the most widely sed intelligence tests; they contain verbal and performance (nonverbal) subtests. |
standardization | defining uniform testing procedures and meaningful scores by comparison with the performance of a pretested group. |
normal curve | the bell-shaped curve that describes the distribution of many physical and psychological attributes. Most scores fall near the average, and fewer and fewer scores lie near the extremes. |
reliability | the extent to which a test yields consistent results, as assessed by the consistency of scores on two halves of the test, on alternative forms of the test, or on retesting. |
validity | the extent to which a test measures or predicts what it is supposed to. |
content validity | the extent to which a test samples the behavior that is of interest. |
predictive validity | the success with which a test predicts the behavior it is designed to predict; it is assessed by computing the correlation between test scores and the criterion behavior. (criterion-related validity) |