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Over the past decade, several initiatives have been launched to increase empirical research in drama therapy. In alignment with this intention, the drama therapy core processes were investigated to establish communal conceptualization and advance operationalization. A Delphi method was modified and utilized to determine makeup, verbiage, and scope of these distinct elements of practice according to North American drama therapists (N = 30). The study was conducted over four rounds, initially inviting expert original panelists (n = 5) to review and edit iterations of previous core processes and subsequently utilizing additional evaluators (n = 25) to provide consensus ratings and feedback on these revisions. Among additional evaluators, inter-rater reliability met threshold criteria for each core process, advancing consensus-derived definitions. Notable changes occurred through the Delphi process, including the …