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I don't know about the child version, but the adult version of the Wechsler battery typically takes about 1.5 hours. When I was administered it in 2002, it took me 3 hours to complete. The Stanford-Binet (I would imagine, since it is a similar type of test battery) probably takes about the same amount of time as the Wechsler. However, the person administering the test has the option of leaving out one or more of the subtests. Leaving out some subtests would save some time, though you would lose some amount of indication of your relative strengths and weaknesses.Pengwuino said:And there's a good benefit :D Id do it for that if i was still in high school adn the test took less then an hour and didnt cost me anything.
Arthur Jensen was fond of using the Raven Matrices to test UC Berkeley students. Even giving students unlimited time to complete the test, it should be faster than the Wechsler. Instead of using a battery of subtests as the Wechsler and Stanford-Binet tests do, the Raven's Matrices only uses one type of item. That type of item looks something like this:
http://www.stuartbell.co.uk/ravens.gif
The Raven's Matrices do not provide an indication of one's relative strengths and weaknesses, so it might be inappropriate for use in learning-disability diagnostics. But it reduces the labor involved in testing. A student can simply be locked alone in a room with a paper copy of the test, or the test could be administered with a computer program. The computer would have an extra advantage in that it could be programmed to automatically zero-in on the subject's ability level and therefore save testing-time relative to accuracy, or increase accuracy relative to testing-time. E.g., if the subject gets 5 items in a row correct, he is moved up in difficulty-level to harder problems (that are worth more for the final score), and conversely if he gets 5 items in a row incorrect, he is moved down in difficulty-level to easier problems (that are worth less for the final score).
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