But the really important term in this equation is the influence that people have on one another, and in particular, something called "the negativity threshold." Now, the negativity threshold, you can think of as how annoying the husband can be before the wife starts to get really pissed off, and vice versa.
Puede pensarse en el umbral de negatividad, como lo molesto que puede estar el marido antes de que la mujer empiece a enfadarse verdaderamente, y viceversa.