2. A co-parent resorts to triangulation
Ideally, co-parents should work together to negotiate the details and settle on a plan that pleases everyone. If one parent undermines this process by involving the kids in the conversation such that they feel like they have to choose sides (i.e., “your father treated me so badly, why would you want to spend the holiday with him?” or “tell your mother I refuse to speak to her unless she agrees with my travel plans”) it’s called triangulation—and Dr. McMahon says it’s a major deal-breaker. In fact, research, like this 2016 study published in Clinical Child Psychology and Psychiatry, confirms that triangulation has a terrible effect on a child’s sense of well-being.
3. Disrespectful treatment occurs in front of the children
If one or both co-parents can’t resist the temptation to get a dig in when the kids are within earshot, you need to find alternate ways to make holiday plans. McMahon says this can range from somewhat subtle jabs and mean-spirited jokes (“See? I told you your father was bad at planning”) to outright ad hominem attacks (“Your mother is a crazy narcissist—that’s why this is so difficult.”) Trash-talking a co-parent is never a good look and pretty much precludes the possibility of a festive family affair. What’s more, the psychologist tells us that, when done to the extreme, it can result in something called parental alienation syndrome, which is essentially a form of emotional abuse that children should be protected from at all costs. So, as the adage goes, “If you don’t have anything nice to say, don’t say anything at all.”