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[quote=Anonymous][quote=Anonymous]They don't vary "considerably" - unless someone is doing something very very wrong when they administer the test, or the person being tested is having a very, very off day.  The variation that one would normally see would be something like 125, 127, 122 from one year to the next...  I wouldn't expect to see a change of 10 points no matter what - that would be a red flag that something is wrong.[/quote]

I don't know if you can compare the different cog abilities tests directly, but trust me there was variation from high average to low gifted and the percentile change ranged over 15% from one test to the other. I don't have reason to believe the test administration was flawed. There is a wide percentile range from high average to low gifted potentially if you're coming out on the low end of high average on one test. Anyway, I don't think these things are the be all and end all. Furthermore, if you look on DCUM you'll see whole threads devoted to discussions of prepping for the WISC-IV so there are too many tested who've been exposed to the material. That skews the results. [/quote]

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