PSYC 1104 Lecture Notes - Lecture 6: Lewis Terman, David Wechsler, Intellectual Disability
25 Dec 2016
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Psyc 1104 - lecture 6 - intelligence (part 2) History of intelligence testing: galton - the theory of psychophysical performance. Psychic energy and heightened sensitivity to external stimuli. Developed tests of an individual"s sensory processing, motor skills, and reaction time: binet-simon intelligence test. Introduced the idea of mental age: lewis terman. Adopted the binet-simon intelligence test for use in the united states. Developed the intelligence quotient (iq): ratio of mental age (ma) to chronological age (ca) x 100 (ma/ca x 100) Child exhibits mental ability of a 7 year old (ma = 7) and is actually 7 years old (ca), this child has an iq of 100 (7/7 x 100) This sets the average iq for every age group as 100. Eugenics: terman believed that his iq test could help determine the fitness of individuals to reproduce, alberta in 1928 and british columbia in 1933 enacted laws requiring individuals deemed mentally retarded or mentally ill to be sterilized.
