In short — yes it will. It will be sad and emotional. They will feel very similar feelings of grief that you may experience as an adult. However, the actual act of ending a marriage or relationship does not cause long-term effects on children. Negative long-lasting side effects for children are predominantly caused by the behaviour of the parents post-breakup and how they deal with co-parenting and conflict.
Research suggests, severe parental conflict both pre and post separation is the main indicator for poor child adjustment. Children are particular affected when the conflict is severe (i.e. verbal abuse and/or physical violence), is frequent and is witnessed by the children.
In Australia, approximately 42,000 to 55,000 children experience their parents separating each year and around one in five Australian children (about one million) will experience parental separation before the age of 18.
Here’s a statistic that less people know: 82 percent of children, aged 14 to 22, who have endured family breakups would prefer their parents to part if they are unhappy.
Asked what advice they would give divorcing parents, one participant said: “Don’t stay together for a child’s sake, better to divorce than stay together for another few years and divorce on bad terms.”