Ulysse Sabbagh

The positive quotient (PQ) is, according to some research led by Shirzad Chamine, who graduated from the Stanford School of Business in 1988, is a more revealing factor of success than IQ or EQ. 

Here are some interesting tidbits from the article:

Psychologists have long observed a human tendency to attend disproportionately to the negatives, since our ancestors’ survival was aided when they noticed threats.

And:

If negativity aids survival, positivity makes it possible to thrive. As a result, people with higher ratios of positive to negative emotions are more likely to flourish in life, experiencing better health, more satisfying relationships and greater professional achievement.