ASSESSING INTELLIGENCE PETER LEE AND SEJIN PAIK
How Do We Measure Intelligence? WAIS (Wechsler Adult Intelligence Scale) - widely used intelligence test that contains two parts Provides clues to cognitive strengths that teachers or employers use to evaluate people
1st Part: Verbal General Information Similarities Arithmetic Reasoning Vocabulary Comprehension Digit Span
2nd Part:Performance Picture Completion Picture Arrangement Block Design Object Assembly
EXTREMES OF INTELLIGENCE (watch video)
Mental Retardation Condition of limited mental ability Intelligence score is lower than 70 Difficulty in adapting to the demands of life varies from mild to profound
Down Syndrome A physical disorder that causes mental retardation An extra chromosome in one’s genetic makeup
Principles of Test Construction
Psychological Tests Aptitude Tests Aptitude = natural ability to do something Achievement Tests Achievement = something that you’ve already done
3 Factors Standardization Reliability --> Validity
Standardization Give a test to a group of people Test other people group and use a scoring system to compare the scores Most standardized tests have normal distribution shown by a normal curve Ex: SAT / ACT
Reliability Reliable - consistently good in quality/performance (macbook dictionary) Want the test to be reliable If people take same / similar form of test again, scores should be same / similar
Validity Does the test test what really it’s supposed to test? How do you know if a test is valid? Content validity - test tests behavior similar to what’s being tested Ex: In a Driving test, they ask you to drive Criterion - test is trying to determine something Predictive Validity - test tries to predict the future Ex: SATs and APs are taken mainly to predict how you might do in college academically = ??????
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