Secondly, they have a difficult time not taking sides when it is painfully clear that their parents live two separate lives, in two separate homes, and those homes are almost always very different from one another. It’s a constant physical reminder that their world is separated into two parts. And young children, especially, are prone to dividing the world into good and bad anyway, so they really struggle with understanding how both homes/parents can be right (and no one is wrong).
Finally, all they have to do is look in the mirror and see that they are the only thing their parents have in common. That’s a lot of pressure to be the reason their parents get along – and not the reason they fight. British poet Wilson Shire said it best about a child of divorce looking in the mirror. “I have my mother’s mouth and my father’s eyes; on my face they are still together.”