16-Intelligence - Intelligence Chapter 9 (Part 2)...

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1 Intelligence Chapter 9 (Part 2) Standardization of IQ Tests l Standardization is the process of establishing rules for administering a test and for interpreting the scores. l An important step in standardizing a test is determining the norms , which are the descriptions of how frequently various scores occur. l Standardization must be based upon a large and representative population, very similar to the population that will be tested. The scores on an IQ test form an approximately bel -shaped curve. The curve shown here represents scores on the Wechsler IQ test, with a standard deviation of 15 (15 points above and below the mean, which is 100). The results on the Stanford-Binet test are very similar, except that the standard deviation is 16, so the spread is slightly wider. page 344
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2 Restandardization and the Flynn Effect l Every test requires periodic recalculation of norms and revision of items. l The periodic restandardization of IQ tests has revealed an interesting trend called the Flynn Effect . l This effect has been noted on a global basis and in all ethnic/racial groups. The Flynn Effect
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16-Intelligence - Intelligence Chapter 9 (Part 2)...

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