Scholars used to avidly study human intelligence. They measured cranial capacity. They administered IQ tests. They sought to define what intelligence was and who had more or less of it and why.
These days, not so much. Somewhere along the way, the very idea of intelligence became politicized. Its legitimacy as a field of study, as a measurable quality -- on par with height, eyesight and hand-and-eye coordination -- and as a concept came under fire. Talk of "brainpower" and "smarts" ebbed as scholars proposed "multiple intelligences" -- such as musical, spatial, interpersonal and intrapersonal -- rather than whatever had hitherto been called IQ. An IQ blackout has descended. When researchers talk about IQ at all, the big question is whether it's inherited, and if so, how much. IQ now faces fierce competition from SQ and EQ, social and emotional intelligence, two burgeoning theories.
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