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Unformatted text preview: Mental Age Assigned an age t o a certain level of test performance. E.g., if 8-year-olds usually got X questions right, 10-year-olds get Y questions right, then a score of: o X = mental age of 8 o Y = mental age of 10 Intelligence Quotient (IQ) Originally defined as (mental age/chronological age) x 100 Standardization 2 Current IQ Tests Wechsler Adult Intelligence Scale (WAIS) 11 subtests o 6 Verbal tests and 5 Performance tests o Scores between subtests can help identify a persons strengths & weaknesses [clip] On the WAIS o Mean is 100 o Standard deviation is 15 Standard dev: Reliability Does this test measure int consistently? Yielding same result across times (on Monday vs. on Thursday) or forms (using form A vs. form B)? Validity Does the test measure what its designed to? That is, is it a good measure of int? Kinds of validity content: predictive:...
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- Fall '07