t everyone must pass through these stages in this order. Piaget also has some assumptions in her theory. A person that never learns to add may be able to think hypothetically. These mistakes only show that psychology still has its flaws. Each of these theories has some value because they are not totally wrong. These theories have withstood criticism and are some of the best. Each theory is similar by time and their sequence of life events; where they differ is in their focus. Freud focuses on sex, Erikson focuses on the self and social orientation, and Piaget focuses on the child's abilities and senses. Each theory is also useful when applied to its relationship to educational practices, and these different ideals guide teachers in the mystical theories of forever trying to understand human development, the mind, and its behaviors....
