Gottman says he looks for certain kinds of negativity, which he calls the «Four Horsemen of the Apocalypse,» to predict a relationship's failure: (positivepsychologynews.com)
It's an away game, I expect Sun to be cautious but I don't expect the same kind of negativity that teams bring to our place. (justarsenal.com)
Certain kinds of negativity, if allowed to run rampant, are so lethal to a relationship that we call them the Four Horsemen of the Apocalypse. (gottman.com)