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What's your dark core score? Over 100 years ago, Charles Spearman made two monumental discoveries about human intelligence. First, a general factor of intelligence (
g) exists: people who score high on one test of intelligence also tend to score high on other tests of intelligence. Second, Spearman found that the
g-factor conforms to the principle of the "indifference of the indicator": It doesn't matter what test of intelligence you administer; as long as the intelligence test is sufficiently cognitively complex and has enough items, you can reliably and validly measure a person's general cognitive ability.
Fast forward to 2018, and a hot-off-the-press
paper suggests that the very same principle may not only apply to human cognitive abilities, but also to human
malevolence. New research conducted by a team from Germany and Denmark suggest that a General Dark Factor of Personality (
D-factor) exists among the human population, and that this factor conforms to the principle of indifference of the indicator. This is big news, so let's take a look.
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