time and evidenced based research was established afterwards to support the theory. The main idea of systems theory as it relates to my client is interaction within the systems creates change. Change will affect the members of the system. If the change is negative the results could possibly be negative. Psychodynamic Theory. The Psychodynamic Approach Assumptions states our behavior is affected by our unconscious mind; the id and superego. These components are in constant conflict with the conscious part is referred to as the ego. Sigmund Freud, the founder of the psychodynamic approach to psychology believed our behavior and feelings are a representation of our childhood experiences. The psychodynamic theory is the belief that