The center core in ego state therapy and other hypnotically facilitated psychotherapies.

Center core phenomena have been utilized in the practice of ego state therapy and other forms of hypnotically facilitated psychotherapy for nearly 40 years. Despite the frequency with which they are employed, many confusions, contradictions, and questions remain concerning them. In this article relevant center core phenomena literature is reviewed and an essential differentiation between two different kinds of center core phenomena is clarified. Psychodynamic explanations are offered for the therapeutic benefits of archetypal center core experiences such as inner strength and inner wisdom. The information provided offers clinicians a sturdier platform from which to decide whether to incorporate center core experiences into clinical practice. The persistent question of whether center core phenomena are ego states is revisited and addressed.