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Published byLoraine Hopkins Modified over 9 years ago
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MEASUREMENTS OF INTELLIGENCE
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STANFORD-BINET SCALE Alfred Binet: devised first modern intelligence test 1916: revised by Louis Terman of Stanford University Intelligence increases with age; different tests for different age levels
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STANFORD-BINET SCALE Intelligence Quotient: reflects the relationship between a child’s mental age and his/her chronological age IQ = mental age/chronological age x 100 Average IQ score: 100
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WECSHLER ADULT INTELLIGENCE SCALE Consists of several subtests, each measures a different intellectual skill Yields 3 scores = verbal, nonverbal, combined Identifies particular learning disabilities Average score = 100
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TEST RELIABILITY AND TEST VALIDITY Reliability: the test yields similar scores for the same individual on different testing occasions Validity: the test measures what it is supposed to measure
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PROBLEMS Economic Factors: lower income children attain scores 10 to 15 points lower Motivation: some children expect to fail Culturally Biased: words and concepts might be used every day by members of one group
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