PSYC-1105EL Lecture 10: Chapter 10
Document Summary
Requirements for intelligence tests: standardized, reliable, valid. Validity: content validity, predictive validity, construct validity: Alfred binet and theodore simon (1904: assessed abilities of french school kids, compared mental age and chronological age, used to predict school performance. Lewis terman: adjusted test for americans, stanford-binet test added new age norms, included range for adults. Problems with iq formula: increases in mental age score level off by mid- to late-teen years, iq for an adult. 30yrs 100 : but this doesn"t mean we lose intelligence as adults! Wechsler adult intelligence scale (wais: most widely used intelligence test, overall intelligence score plus Processing speed: separate versions for school-age and preschool kids. Wechsler preschool and primary scale of intelligence (wppsi) Intelligence testing today: test scores represented by a normal distribution of scores for each age group. General intelligence (spearman"s g factor: more recent conception: Stronger correlation with more relatedness: heritability estimates. 5: assume environmental effects controlled for (=0), therefore: