IQ versus EQ or the emotional quotient is best demonstrated by “nerds” - those who are intellectually advanced and understand complex ideas (calculus, biology, mechanics) but rate poorly on social skills.
Adding EQ means that dumb kids who get along with others score higher on a composite test. And bright kids with great social skills score better than those with a high IQ but poor people skills.
Those with high IQ as well as high EQ tend to do best in life. Those with a low EQ often fair poorly, even with a high EQ. But you cannot replace IQ with EQ entirely, because a highly social person who doesn’t understand math or read will fail in today’s world. And even those with poor EQ can make a good living in engineering, IT or research with a high IQ and training.
I remember one guy who would help with my computer at my office, who was really friendly, but he just wouldn't stop talking about Star Wars/Fantasy/Star Trek.
Now I like Star Trek, but this guy didn't know when to give it a rest.
My non-verbal cues went right over this guy's head.