Chapter-09-Notes.docx - PsyA02 u2013 Chapter 9 Notes 9.1...

This preview shows page 1 - 3 out of 12 pages.

PsyA02 – Chapter 9 Notes 9.1 – Measuring Intelligence Sexual Sterilization Act Alberta – 1928 o Passed a law allowing doctors to destroy the fallopian tubes of mothers they deemed “genetically unfit” Forced Sterilization Leilani Muir received a low score on an IQ test, deeming her genetically unfit o Doctors forced sterilization on her without her knowledge Told her she needed her appendix removed o Law required minimum 70 on IQ tests Leilani received 64 Different Approaches to Intelligence Testing Galton’s Anthropometric Approach o Sir Francis Galton (1822-1911) o Believed that people learned about the world through their senses Ergo those with superior sensory ability would learn more o 1884 – Galton created a set of 17 sensory tests Highest and lowest sounds a person could hear Ability to tell the difference between objects of similar weight o Anthropometrics Literally – The measurement of people Figuratively – Methods of measuring physical and mental variations in humans o Galton’s colleague, James McKeen Cattell took his tests to the US, ultimately debunking Galton’s theory People’s abilities on different sensory tests did not correlate with each other Sensory tests did not predict grades The Stanford-Binet Test o Alfred Binet argued that intelligence should be measured by more complex processes Memory Attention Comprehension o Intelligence The ability to think, understand, reason, and adapt to overcome obstacles o Alfred Binet and Theodore Simon, hired by the French government, began developing a test to measure intelligence Government wanted to weed out “retarded children” who would benefit from specialized education
Binet argued a child’s test score measured their mental age The average intellectual ability score for children of a specific age o If a 7-year old scored the average score for a 10-year old, they would have a mental age of 10 o Lewis Terman, Stanford University, adapted the test in 1916 creating the Stanford-Binet Intelligence Scale A test intended to measure innate levels of intelligence This test differed from Binet’s original idea to measure a child’s current abilities rather than innate capacity Terman adopted William Stern’s concept of intelligence quotient ( IQ ) IQ is calculated by taking a person’s mental age, dividing it by their chronological age, and then multiplying it by 100. o Proved to only be applicable to children Deviation IQ Calculating the IQ of adults o Comparing the person’s test score with the average score for people of the same age The Wechsler Adult Intelligence Scale o David Wechsler – 1955 Was labelled as “feeble minded” by most intelligence tests o Wechsler Adult Intelligence Scale Most common intelligence test used today for adolescents and adults Provides a single IQ score for each test taker ( the Full Scale IQ ), but also breaks down intelligence into two properties General Ability Index (GAI) o Verbal comprehension o Perceptual Reasoning Measures an individual’s intellectual abilities, without

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture