The consequences of a divorce for children are mostly that they have to move to a different home and sometimes to a different school and that they will not see and be with both their parents at the same time any more. In most of the cases, they will live with their mother and they will see their father much less.
For pre-schoolers, the family and especially their parents, is the center of their universe. They need a lot of attention, care, love and confirmation from them. As a result of the divorce, they might become even more dependent of their parents. Divorced parents report that after the divorce, their young children started bed watering again and that they could not or did not want to do simple tasks that they were able to before. Probably, this is their way of getting closer to their parents.