1. Psychologist Robert Kegan describes five orders of consciousness that represent increasing levels of mental complexity in how people understand themselves and relate to the world. 2. The first order is an impulsive mind where one's impulses are subjective and cannot be controlled. The second order is an instrumental mind focused on one's own needs and desires. 3. The third order is a socialized mind where interpersonal relationships become subjective. The fourth order is a self-authoring mind defined by one's identity and values. The fifth order is a self-transforming mind that considers different ideologies.