Originally Posted by MumOfThree
Jon the way IQ scales worked when you were in school was different to current IQ scores, 150 on older tests was not the same score as 150 on a modern test. Previously they used a ratio IQ. The WISC3, as mentioned, is an older test, but not ratio IQ old, it's possible the score is a bit inflated.

Great.

That is quite possibly not good for me at all.

So now I'm going to have to research the tests to figure out what's going on.

Anybody have any good sources so that I can track changes over time? Is there some sort of "IQ calculator" out there with respect to the various tests?

I'm only concerned about the *low end* of the IQ scale. Meaning 70 and below, which is what I have to deal with on a regular basis.

I'm always comparing tests from the 1970's to the current tests and now I think I probably have a problem.