[Mari]

http://www.psychologytoday.com/artic...-negative-bias
Our Brain's Negative Bias

And that is due to the brain's "negativity bias": Your brain is simply built with a greater sensitivity to unpleasant news.
The bias is so automatic that it can be detected at the earliest stage of the brain's information processing.

All well and good. Having the built-in brain apparatus supersensitive to negativity
means that the same bad-news bias also is at work in every sphere of our lives at all times.

http://www.nytimes.com/2012/03/24/yo...anted=all&_r=0

Praise Is Fleeting, but Brickbats We Recall

In an experiment in which participants gained or lost the same amount of money,
for instance, the distress participants expressed over losing the money was greater than the joy that accompanied the gain.

“Put another way, you are more upset about losing $50 than you are happy about gaining $50,” the paper states.

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