8.Intelligence_Reasoning - 8. Intelligence & Reasoning...

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1 ** Important Notice Concerning Lecture Material ** This file includes most, but not all, overhead material presented in lecture (e.g., some material may be altered or addedinlasminute changes) added in last-minute changes). The best use of this file is to print it out and take notes on them during lectures. Æ WARNING: Perfect knowledge of this material will not guarantee an A in the course. That is, important details will be presented in lecture but are not presented in this pdf file. Thus, it is very important that you attend lecture and discussion sections. What is Intelligence? • Ability to acquire knowledge/solve problems • Flexible thinking, abstract reasoning • Genetics basis? • Whatever an “IQ” test measures? ¾ Francis Galton (1822-1911) Intelligence is inherited Single factor view: neural efficiency (as measured by reaction time), fixed ¾ Alfred Binet (1857-1911) Francis Galton (1822-1911) developed first intelligence test “mental age” depends on a collection of mental skills: memory, vocabulary, math Not based on single, fixed (genetic) entity Alfred Binet (1857-1911) 8. Intelligence & Reasoning Psy 1, Spring 2008
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2 Intelligence Testing • Stanford-Binet IQ Test first IQ test commonly used in US Measures based on Binet’s test, but, concepts based on Galton’s view ¾ first IQ test commonly used in U.S. ¾ measures: memory, vocabulary, math, others, as in Binet’s test. ¾ Intelligence Quotient (IQ) = (mental age/chronological age) * 100 • Wechsler Adult Intelligence Scale (WAIS), WISC for children ¾ most popular IQ test today ¾ Verbal and Performance subscales ¾ Subscales have significance for left vs right hemisphere processes WAIS Block Design Subtest Intelligence Testing: WAIS WAIS IQ score normed at 100, SD=15 8. Intelligence & Reasoning Psy 1, Spring 2008
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3 Theories of Intelligence Single Factor View • Galton’s influence ¾ Genetic ¾ Unvarying over the life span ¾ Biological, neural efficiency (reaction time) • Spearman’s general intelligence theory ( g , a primary factor) ¾ g factor, a measure reflecting a person’s general intellectual ability ¾ acknowledges a person’s specific ability on particular tests Cattell’s Theory of Intelligence The g factor has two components-- • Fluid intelligence: ¾ general ability to see similarities, comparisons, find relationships, solve novel problems (similarities,
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8.Intelligence_Reasoning - 8. Intelligence & Reasoning...

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