In this episode, Ken Critchfield, PhD and Eliza Stucker-Rozovsky, PsyD begin a new miniseries on Interpersonal Harmonics—a core concept in Interpersonal Reconstructive Therapy (IRT)—by exploring Cluster C personality disorders through an interpersonal lens.

We walk through avoidant, dependent, and obsessive-compulsive personality patterns, highlighting how these presentations extend beyond DSM-5 symptom lists into deeply rooted interpersonal patterns shaped by developmental trauma and learning histories. Using SASB-informed thinking and copy process theory, we examine how early caregiving environments shape internal self-criticism, fears of rejection or incompetence, and rigid perfectionism.

Throughout the episode, we emphasize a central IRT principle: these are not “disordered people,” but adaptive love stories gone wrong. By understanding the interpersonal logic behind these patterns, clinicians can move beyond diagnosis toward meaningful case formulation and compassionate, effective treatment.

Note: The Loving Differently Podcast is for educational and informational purposes only. The content discussed in each episode is not a substitute for professional mental health care, diagnosis, or treatment. Listening to this podcast does not create a therapist–client relationship.

Timestamps

(00:00) – Launching the Interpersonal Harmonics miniseries

(02:00) – Why Cluster C personality patterns first

(04:30) – Avoidant personality: beyond anxiety

(06:30) – Fear of rejection, humiliation, and longing for connection

(09:00) – Developmental origins and criticism

(17:30) – Therapy stance with avoidant patients

(43:30) – Transition to dependent personality

(45:00) – Developmental pathways to dependency

(52:00) – DSM vs interpersonal patterns in dependency

(01:01:00) – Transition to obsessive-compulsive personality

(01:03:00) – Perfectionism and fear of imperfection

(01:08:00) – Living in the courtroom

(01:14:00) – Therapy stance for OCPD

(01:24:00) – Experiencing life beyond perfectionism

(01:28:30) – Summary of Cluster C