PSYB01H3 Chapter : PSYB01 Ch 5

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4 Jan 2012
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> if the measure does fluctuate, there is error in the measurement device. An unreliable measure of intelligence contained considerable measurement error and so does not provide an accurate indication of an individual s true intelligence. E. g. to illustrate the concept of reliability further, imagine that you know someone whose. Now suppose that you administer an unreliable intelligence test to this person each week for a year, after the year you calc. the person s average score on the test based on the 52 scores you obtained. Now suppose that you test another friend who also has a true intelligence score of 100; however, this time you administer a highly reliable test. In each case, the average score is 100. However, scores on the unreliable test range f/ 85 to. 115 whereas scores on the unreliable test range f/ 97 to 103.

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