[Solved] Discuss the three types of longitudinal research methods. When is each method an appropriate choice of data collection? Discuss the difficulties of each method. Preconscious Mind: Part of the mind that contains information not currently in consciousness but can be easily accessed and brought into awareness. Id: In psychoanalytic theory, the part of the psyche that is the source of instinctual impulses and demands for immediate satisfaction of basic needs. Ego: In psychoanalytic theory, the part of the personality structure that mediates between the demands of the id, superego, and reality, functioning as the executive control. Pornographic Video: Visual content intended to stimulate erotic feelings rather than aesthetic or emotional feelings.