This addendum will provide an update on the status of a naturalistic process-outcome psychotherapy research program developed at Istanbul Bilgi University Psychotherapy Center, a university-based outpatient mental health clinic. The research program investigates treatment processes in psychodynamic child psychotherapy, with a particular focus on psychodynamic techniques, mentalization processes, therapeutic alliance and symbolic play. The research is integrated in the treatment context, with detailed baseline clinical assessment and therapeutic process tools that are meant to inform clinical practice. The aim of the research is to provide preliminary answers about the effective components of psychodynamic child psychotherapy. The details of the research set-up, the development of the program and findings from studies will be shared.