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IQ Tests and the Big Five in Psychology?
Daniel Treisman: In psychological research, things just don't fall along the nice little neat theoretical lines that you build your career around. We have these basic constructs, general cognitive ability, which is a walloping measure and also pretty decent measures of temperamental proclivity. And we shouldn't be talking about any other constructs in psychology until we can be absolutely sure that we're not just re measuring constructs that have already been discovered. He says it's disheartening on the psychological front because both IQ and the big five are such black holes.