What are Freud's three theories?

In Freud's early theory, human psychology has two parts, one is consciousness and the other is unconsciousness. Freud once found in the treatment of hysteria that patients could not be aware of all their emotional experiences. If the patient can recall his experience about the disease under hypnosis and confess to the doctor, he will feel comfortable and recover. Freud believed that the emotional experience experienced by patients was suppressed, excluded from consciousness and hidden in unconsciousness, thus producing symptoms. Starting from this early assumption, Freud gradually formed his concepts of consciousness and unconsciousness. In this way, he believes that human psychology includes conscious and unconscious parts. \ r \ Consciousness is a psychological part related to direct perception. For example, I realized that it was daylight. \ r \ The threshold of consciousness refers to the dividing line between consciousness and unconsciousness. \ r \ nIt is difficult or impossible for subconscious mind to enter consciousness, while pre-consciousness may enter consciousness. Therefore, although there were boundaries before, there was no insurmountable gap. Pre-consciousness is between consciousness and subconscious, and shoulders the task of "inspector". Unconscious instincts and desires are not allowed to invade consciousness. But when the current consciousness loses its vigilance, sometimes the repressed instinct or desire will infiltrate into the consciousness through camouflage. \ r \ However, they have not been eliminated, and they are still actively and unconsciously pursuing satisfaction. Therefore, the unconscious part is the "big warehouse" of human past experience. Because Freud's unconsciousness has such a nature, people call it subconscious, and some books will also be translated into subconscious. \r\n Freud sometimes used icebergs to describe the importance of the unconscious. Just as the main part of the iceberg exists below the water surface, the main part of human personality is also below the level of consciousness; Freud believed that the really important reason of human behavior lies in this part of personality. Therefore, to understand human behavior, we must reveal the unconscious. \ r \ nIn Freud's view, as mentioned above, pre-consciousness is a part of consciousness, and realizing pre-consciousness, or from consciousness to pre-consciousness, is a blink of an eye. Although there is a boundary between the two, there is no insurmountable gap. Therefore, we can use the dotted line to represent it. In Freud's view, it is very difficult for the unconscious (subconscious) to return to consciousness, because there is an obvious barrier between the two, and there seems to be a strict line of defense at the door of consciousness, which does not allow the instinctive desire in the unconscious to invade at will. Therefore, we can use a solid line to represent it. In Freud's early theory, this defensive role was called "inspection role" or "inspector" \ r \ The concept of unconsciousness is the core of psychoanalysis and the basis of Freud's theory. Freud raised the unconscious (subconscious) to an unprecedented height in his theory, while consciousness only occupied a secondary position. He believes that "the spiritual process itself is unconscious", and he opposes describing psychology as "science with conscious content". He not only thinks that "conscious psychological process is only an isolated process", but also thinks that there is a kind of "something similar to unconscious thinking and unconscious will", and the understanding of unconscious process is a decisive tendency to influence the world and science. Therefore, Freud advocated that the research object of psychology should mainly be various unconscious psychological processes of human beings, that is to say, psychology should be a science with unconscious (subconscious) content. \r\n\r\n 1923 Freud published the book ego and id, and looked at personality from another angle: a structural model including id, ego and superego. \ r \ nId is the most primitive part of personality, and it is the initial system that newborn babies have at birth. I don't know right or wrong, I know nothing about the possibility and impossibility of the real world, and I have no constraints on myself. It only seeks satisfaction and acts according to the "happy principle". Freud's concept of id really describes the characteristics of a newborn baby. People in this stage of life have never experienced the difficulty of longing for what they need, nor have moral beliefs; Therefore, it is not unreasonable to regard the baby as a "full ID". \ r \ nId is the place where human instinct exists. People are born with production instinct and death instinct. Production instinct supports and encourages the survival of individuals and races. Hunger, thirst and sexual attraction are part of the survival instinct. Instinct has ability, and instinctive psychological ability drives people's activities. The ability of life instinct is called libido. \r\n Freud believed that there is a tendency to die in people's hearts, that is, to return to the state of life. This tendency appears in the psychological form of death wish, which may appear directly or indirectly in the form of suicide, such as what people who are engaged in racing cars, mercenaries or other high-risk activities do. However, on the whole, life overcomes the direct execution of death instinct. \ r \ The superego is like an internal judicial system, like a conscience. Conscience is often a stern and uncompromising internal judge of thoughts, intentions and actions. It observes the explicit self and threatens it with punishment such as guilt. Besides the ability to punish, the superego can also give rewards. If you act in concert with yourself, such as refusing the temptation to do something wrong, you will feel proud and self-esteem.