In the world of dreams the rules of reality do not necessarily apply. Each dream is unique and it's a direct link to the soul and spirit. Psychology provides its own theories on what dreams mean, but so did tradition and the study of dreams for thousands of years before any relevant science had developed.
Dream Meanings - Adoption
If you dream that you have been adopted then someone will support you at work and make you happy, but if you adopt a child then your behaviour might create problems.