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First Hour - How can one measure intelligence?

Intelligence I. First Hour - How can one measure intelligence?. What is Intelligence?. Early Intelligence testing. Producing a good intelligence test The normal distribution Reliability and validity Longitudinal and cross sectional studies of intelligence. Intelligence:.

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First Hour - How can one measure intelligence?

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  1. Intelligence I First Hour - How can one measure intelligence? What is Intelligence? Early Intelligence testing • Producing a good intelligence test • The normal distribution • Reliability and validity • Longitudinal and cross sectional studies of • intelligence

  2. Intelligence: • The ability to learn from experience • The ability to adapt to the surrounding environment • The ability to understand and control one’s own • thinking process (metacognition) • BUT one must understand the role of culture in • intelligence….

  3. The Stanford-Binet version of IQ: The WAIS version of IQ:

  4. Test:“...a standardized instrument, consisting of items, for obtaining a reliable sample of some valid aspect of a person’s behavior (e.g. thinking and reasoning abilities).” standardized items reliable valid

  5. Reliability • Test-retest reliability • Alternate-forms reliability • Split-half reliability Validity • Criterion validity - real life measures • Content validity – items measure what they • propose to measure • Construct validity – test captures the • multi-dimensional nature of the quality measured

  6. Longitudinalvs. cross-sectional comparisons (cell contains birth year) 1944 60 1944 Age of individuals 50 1954 1944 1944 40 1964 1984 1994 2004 Year in which the data were collected

  7. (single group) 105 — longitudinal 100 — (different groups) 95 — IQ scores 90 — cross-sectional 85 — 0 — | | | | | | | | | | 25 30 35 40 45 50 55 60 65 70 Age in years IQ and age:cross-sectionalvs.longitudinal comparisons

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