To be honest I think this story is overplayed a bit. I've heard of that tipping point idea before, or the positive to negative ratio thing, but I think most in the field didn't take it more seriously than an observation that couples, groups, etc that function well are more positive and supportive.
It's good to call this stuff out but part of the reason no one else did is because outside of a certain subsubfield no one took it that seriously.
It's good to call this stuff out but part of the reason no one else did is because outside of a certain subsubfield no one took it that seriously.