Homework Questions for Intelligence and Testing.docx

2 how did lewis terman revise binets original tests

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chronological age which is why we have aptitude tests that illustrate this. 2. How did Lewis Terman revise Binet’s original tests for use with American children? Lewis Terman revised Binet’s original tests by extending the upper end of the test’s range from teenagers to superior adults.Intelligence became revealed when a person was born. 3. Draw and label a normal curve of intelligence scores. Include three standard deviations above and below the mean and the percentages that fall within one, two and three standard deviations. (See Figure 61.2) 4. Define the Flynn Effect and describe the explanations that have been suggested for its occurrence. The Flynn Effect is the substantial and long-sustained increase in intelligence test scores measured in many parts of the world from the 1930s to the present day. People are getting smarter and higher performing. Improved standard of living is thought to be one of the causes of the significant climb in intelligence. 5. Why is reliability a key consideration in test development? What are two specific methods researchers utilize to measure the reliability of a test? Reliability is a key test development as it is vital that these tests be consistent if the correct data is to
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be obtained. The tests won't tell us anything if there isn't consistency. To check a test’s reliability, researchers retest people or they use the same tests and split it in half to see if the odd and even question scores correlate. These are the test-retest and split-half approaches to reliability. 6. In what way is validity different from reliability? Validity is is the extent to which a test actually measures or predicts what it promises while reliability is the consistency associated with the tests and scores.
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