10-21 - Chapter 8 10-21-08 Intelligence Testing Alfred...

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Chapter 8 10-21-08 Intelligence Testing Alfred Binet: o Asked by French to develop test of academic abilities o Binet and Simon: developed first intelligence test in 1905 Inexpensive, objective, easy, good a predicting school success Gave Mental Age by comparing performance to many other kids who took test Average 8 year old = mental age of 8 Below average 8 year old = mental age of 6 Above average 8 year old = mental age of 10 Sanford-Binet IQ Test o Terman (working at Stanford) updated test in 1916 o New scoring: Intelligence Quotient (IQ) IQ = mental age/actual age X 100 Average 8 year old: 8/8 X 100 = 100 Below avg 8 year old: 6/8 X 100 = 75 Above avg 8 year old: 10/8 X 100 = 125 o Widely used test today Weschler Adult Intelligence Scale o Intelligence test developed for adults o Has sections over verbal and performance abilities o New scoring system based on normal distribution of intelligence Normal distribution = bell curve o Most people fall at or near average
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10-21 - Chapter 8 10-21-08 Intelligence Testing Alfred...

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