“No.”

(Goes off and plays video games.)

Yes with kids you probably have to carry it out further. The point, I think, is to remove emotionally charged or conclusive statements. “I know you like the ability to afford a new computer every other year. That will be difficult if you don’t have the technical knowledge for a higher paying job.” Etc

Has this technique been proven to be successful? Otherwise I don't think it's right to call it "the thing to do".

My experience so far as a parent is that there is no such thing as universally appropriate parenting technique. Every child has their own personality and responds to different things in different ways.

Still, I prefer to use techniques that don't make my children feel unhappy, for obvious reasons. First the carrot, then the stick.

People indicate the methods from that book saved their marriages. I’m not aware of any studies because I don’t have time to become an expert on this. Violence comes in many forms and diminishes peoples’ autonomy. That’s almost the definition of violence. So remove the diminishing language as a start.