Intelligence Definition and Measurement Essay

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Intelligence Definition and Measurement
Defining and testing for intelligence is a controversial issue and has been since the first intelligence test was created and administered. Many forms of intelligence and achievement tests exist and using a particular test is a matter of preference and depending on the areas of intelligence is desired to be measured. This paper will start by critiquing the major definitions of intelligence, and determine the best definition for each chosen intelligence and achievement instruments. It will also evaluate the reliability, validity, normative procedures, and biasness of each intelligence measurement. The measurements will be compared and contrasted while also considering the ethical implications of
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It also has 15 other subtests that measure areas, such as comprehension, copying, vocabulary, and pattern analysis (Kids IQ Test Center, n.d.). The two achievement measures chosen for evaluation are the Wechsler Individual Achievement Test, Third Edition and the Stanford Achievement Test, Tenth Edition. The Wechsler Individual Achievement Test is based on Wechsler’s definition of intelligence. It has 16 subtests and was created with the idea that each individual's intelligence is different from another’s (Pearson, 2009). The Stanford Achievement Test is commonly known as the SAT among high school students. This measurement also best fits Wechsler’s definition of intelligence as it measures learning and knowledge of individuals while keeping in mind individual differences of knowledge and intelligence. This achievement test has 13 levels, such as math, reading, comprehension, spelling, science, and language, and covers kindergarten through the twelfth grade (Harcourt Assessment, Inc., 2003).
Reliability, Validity, Normative Procedures, and Bias
Wechsler Adult Intelligence Scale The Wechsler Adult Intelligence Scale was tested for reliability by using internal consistency, test-retest stability, and interscorer agreement. All three reliability tests show “strong evidence for score reliability” (Wechsler, 2008, para. 6).
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