PSY E112 Lecture Notes - Lecture 8: Lewis Terman, David Wechsler, Personnel Selection
Document Summary
Lewis terman (stanford university) introduced measure of intelligence quotient (iq) Problem: one"s mental age stops but chronological age continues until death; 820 yr old with mental age of 30 has higher iq than 80 yr old with therefore iq decreases with age same mental age. To overcome problem deviation iq (compare"s individual"s score with those received by other individuals of same chronological age) Intelligence was made up of multiple abilities. Developed intelligence tests that assessed a number of subcategories of intelligence. Developed wais (adults) and wisc (children- correlates well with scholastic performance ) Standardization: determining typical performance on a test within a population (finding test norms ) Makes sure test can make differentiations interested in. Validity: test measures what it is intended to measure. Can test this by comparing test to criterion (ie. other tests that are. Poor/minority children often place in special ed classes b/c of low iq scores. Tests depend on exposure to test taking skills.
