Reviewing hundreds of studies on psychotherapy outcome, the factor that most often is associated with successful therapy is always the same—the quality of the client–therapist relationship. The therapeutic relationship is more important than the theoretical orientation or particular methods used (Orlinsky and Howard 1986; Wampold 2001; Norcross 2002).

The therapeutic relationship—be it a therapist and client, or a healing parent and wounded child—is the most powerful curative factor. Since interpersonal trauma is created by hurtful relationships, the “cure” requires a relationship that has the same ingredients as a healthy (“secure”) parent–child relationship: trust, safety, empathy, emotional attunement, limbic resonance, support, and helpfulness.

Dr . Terry Levy and Mr. Michael Orlans co-wrote this article. They are the co-authors of two books and co-lead seminars on attachment and trauma. They welcome hearing from you.