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It seems to me that a concept like IQ is intuitively necessary to explain some commonsense observations. We all know that some people seem to be cleverer than others. It follows that we ought to be able to fashion tests that reflect cleverness or something like that. Now I accept that IQ tests may not measure the full range of intelligence but surely they are measuring something, and something sort of like what just plain folks mean when that say "that person is smart." It is not true that imagination and creativity are all that count. Remember what happened to Dan Quayle when he spelled potatoe wrong. Memory is also an aspect of intelligence. Rote memory. It seems to me that if IQ did not capture something like what people sense about the world it would not have survived. Same with gravity. I think one problem with IQ is that different groups score differently on IQ tests and this makes people nervous. It could be used to support racist arguments. One way to nullify such arguments is to claim that IQ is not a valid measurement of anything (or anything important). But I do not find the argument that IQ is a measure of nothing intuitively persuasive, even though I accept that argument that IQ doesn't measure the full range of human intelligence. Surely our commonsense observations about other people and ourselves cannot be entirely fantasy. And surely almost any measure of thinking must be measuring something real. Steve Tripp ci52@ukanvax