College students even have a name for it: "The Freshman Call." Parents wait until their child has finished high school and is off to college before getting a divorce, which they, or at least one of them, may have been planning for a long time. Their son or daughter is already going through the disorientation of being away from home for the first time, adjusting to being on his or her own, and hearing that her family is disintegrating can be profoundly disorienting.
Don't announce the divorce on the phone. "The hardest thing is when you're away from home and the entire divorce plays out over the phone and email," says Brooke Lea Foster, author of The Way They Were; Dealing With Your Parents Divorce After Lifetime of Marriage, who went through her parents divorce herself over the phone. "It's horrible. You get snippets and constantly feel like you should be there. You feel guilty, embarrassed. You're just getting to know people at college and are too embarrassed to be crying about mom and dad when you're being an adult for the first time. When you leave home you rely on home to ground you, when home has an earthquake rumbling under it you're thrown for a loop"
Don't announce it at Christmas dinner either. Your children will feel blindsided if they come home for the holidays only to find out their parents are getting divorced.
Actually the best way to tell adult children about your divorce is the same way the experts recommend telling small children. If at all possible, you and your spouse should sit down with them together when they have some time to digest the news and talk to them about it together. If your children are in college, wait until they're home for a long break. Adult children bitterly resent it when the feel that the news has been communicated in a sneaky, indirect, dishonest, humiliating or unnecessarily brutal way. They especially resent it when they are left to break the news to the other parent.
I don't remember any particular trauma from the parental divorce when I was a young child, but I do remember the confusion I felt every time I spent time with my bio-mom and heard her side of the story. Naturally, being essentially abandoned by my mother had an affect on me and all my future relationships.
The pain I felt when my parents divorced when I was in my 20's is still memorable. Even though I was self-sufficient, I felt adrift...my family was literally falling apart. I was afraid that I would lose this mother too. I was also relieved when both my parents went on to find partners that suited them better. This time my mother did not abandon me, and we are now closer than ever.
IMHO the last advice "Warn your partner not to act parental with your adult kids. There's nothing more annoying to an adult child than someone trying to be her mom or dad when she's grown up and barely knows him." is totally applicable to young children. Why would a kid care about the person one of his/her parents hooks up to? Kids already have too parents, unless there has been abuse of any kind, they don't need extra ones.
I'd still like to see the US CENSUS data you claim you have stating a mans income goes UP after a divorce.
Young children are frightened that their parents will stop taking care of them.
Adult children do not have to deal with this very visceral fear.
My parents divorced after a long rancorous marriage. I was frightened by the prospect of divorce as a child. Didn't care at all when they finally did divorce when I was an adult.