My wife is a high powered attorney with an IQ north of 130 who makes almost $200,000.00 per year.
She only behaves herself and treats me right when I assume most of what she says are the prattling of a child. She is much, much, MUCH happier when I treat her that way as well.

This does not mean I ignore her, or belittle what she says, or make fun of her, or treat her "mean." Seriously you miss the point if that is what you think! Is THAT how you would treat a "child?" Of course not!
You treat a child with FUN. The whole point is to have FUN with your woman!! Who knew, right?

Sometimes what my wife says is relevant and I tell her she is cute. Sometimes (usually actually!) what she suggests, demands, or wants is very reasonable and I will treat her just as I would treat one of my kids and pat her on the head and tell her "you have the best ideas" or "you are such a smart little girl."