Can You Really Train a Man?

I just came across this New York Times story from a while back, where the author explains how she trained her husband using techniques she had learned while writing a book on exotic animal trainers. She explained:

The central lesson I learned from exotic animal trainers is that I should reward behavior I like and ignore behavior I don't. After all, you don't get a sea lion to balance a ball on the end of its nose by nagging. The same goes for the American husband.

Though I do appreciate the idea of acknowledging good behavior, I thought it was already common knowledge that nagging will never get someone to change. Truth be told, it makes me feel kind of strange to think of a boyfriend in the context of behavior and training. Shouldn’t I just be accepting him the way he is? Is it even possible to train the man in your life? And would you even want to? Tell me what you think!