The RCS (Rearing Coding System) coding group focuses primarily on clinician competence and therapeutic action within the Group Attachment Based Intervention (GABI). The coding group watches 10 minute clips of clinicians and trainees delivering GABI with parent-child dyads and codes them using a 5 point likert scale (where 1 indicates less “competence” or skillfulness in the intervention and 5 a skillful, meaningful intervention) across 7 modes of therapeutic action, termed REARING. REARING is the theoretical basis for GABI and exemplifies the things the clinician does, or does not do, to create therapeutic change in parent-child dyads. REARING stands for: Reflective functioning, Emotional attunement, Affect regulation, Reticence, Intergenerational patterns of attachment, Nurturance, and Group context. This coding group is perhaps most relevant for people who are interested in dissemination of evidence based treatments in psychology, psychotherapy process research, and understanding therapeutic action.