They analysed more than a billion Facebook status updates ... known to increase the number of negative posts and reduce the number of positive ones - and the impact this had on the status updates ...

While positive Facebook posts tend to generate other positive posts, negative posts tend to generate negative ones. But here's the good news: Positive posts tend to be more "contagious" than the ...

Each additional negative post yields 1.29 more negative posts among friends, while each additional positive Facebook post yields an additional 1.75 positive posts among friends, the study deduced.

Contrary to the belief that Facebook makes us feel bad, the study showed that each additional positive post reduced the number of negative ones by friends by nearly two-fold, while each additional ...