The Evolution of IQ. IQ and Alfred Binet 1904 Binet commissioned to find a way to identify children who might need special instruction. Designed to test.

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Presentation transcript:

The Evolution of IQ

IQ and Alfred Binet 1904 Binet commissioned to find a way to identify children who might need special instruction. Designed to test reason, ability to judge and solve problems. Age graded tasks (The majority can) Score=Mental Age (Test Score)/Chronological Age x 100. Average intelligence = 100.

Testing Mania Intelligence was seen as fixed Testing used to “filter out” people in immigration, armed forces and even society. –Some cases of forced sterilization Test had a cultural bias –Tennis Courts

New Tests Include verbal, spatial skills and problem solving. Scored using raw scores compared to others who have taken similar tests. “Bell Curve” 130+ Very superior 2.2% Superior 6.7% High average 16.1% Average 50% Low average 16.1% Borderline 6.7% Below 70 Extremely low 2.2%

IQ: Nature vs. Nurture Hereditary-How do we know? –Twins –Adoption –Siblings Environment –Stimulation –Expectations for Success –Health, Nutrition –Chaos vs. Structure –Schooling