In Chapter Two we looked at two ways of thinking about the structure of the mind. One of these is as an entity that has both conscious and unconscious aspects, the topographical model. The other is the structural model, which is contained within the topographical model and in which the mind is thought of as having three basic aspects that interact wiTheach other and are involved in the everyday decisions and choices that we make. These three aspects are the id, the ego, and the superego.