PSY100Y5 Chapter Notes - Chapter 9: Intellectual Disability, Lewis Terman, Intelligence Quotient
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PSY100Y5 Full Course Notes
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Document Summary
Standardization refers to the uniform procedures used in administering and scoring tests. Norms indicate where a score on a test ranks in relation to other scores. Percentile scores indicate the percentage of people who score above or below specific scores. Reliability refers to the measurement consistency of a test. The first intelligence test was devised by sir francis galton, who sought to show that intelligence is inherited. Modern intelligence testing was launched in 1950 by alfred binet, who devised a scale to measure a child"s mental age. Lewis terman revised the binet scale to produce the stanford-binet scales in 1916, which introduced the intelligence quotient. In 1939, david wechsler published an improved measure of intelligence for adults, which introduced the deviation iq score based on the normal distribution. Spearman argued that all cognitive tests share a core, which he called g, whereas. Thurstone asserted that intelligence is made up of independent abilities.
