The German psychologist William Stern coined the term IQ in 1912, a couple of years before World War I. The concept of emotional intelligence emerged over half a century later, but the term EQ only became widespread in the late 1990s, with the success of Daniel Goleman’s book Emotional Intelligence.
Dr. Paul Stoltz’s Adversity Quotient—AQ for short—came out in 1997. Stoltz argued that while IQ and EQ certainly play a part in determining success in life, they by no means guarantee it.
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