In Internal Family Systems therapy, which belief is NOT held?

In Internal Family Systems (IFS) therapy, the focus is on understanding and harmonizing the various parts of the self, each of which serves a distinct role and purpose. The belief that all internal parts must be integrated for healing reflects the IFS approach's emphasis on achieving a harmonious self, where each part is recognized and valued, but full integration is not necessarily required for healing to occur.

Communication theory is indeed utilized within IFS to facilitate understanding and resolving internal conflicts, aiding the therapy process by allowing individuals to communicate with their parts effectively. This aligns with the idea that understanding how parts interact helps in the healing journey.

The concept of a "parts party" is not a recognized framework in IFS, and thus, while the idea of using communication strategies to engage with parts might be intuitive, it doesn't constitute a core belief within IFS. Therefore, the assertion that communication theory can be applied to achieve a "parts party" is not aligned with the foundational principles of IFS therapy.