A comprehensive review of the practice-based evidence for spiritually integrated psychotherapy (SIP) is necessary in order to catalyze research and training in this important diversity area. In this article, we identify and synthesize key findings from 35 studies in six key areas: (a) SIPs in trauma treatment, (b) SIPs in treating eating disorders, (c) SIPs in general psychotherapy, (d) existential concerns as part of SIPs, (e) patients and therapist attitudes about SIPs, and (f) SIP supervision and training models. Building on this, we propose a culturally contextual understanding of this diversity area, drawing from the Relational Spirituality Model (RSM). Finally, we discuss best practices for spiritually responsive clinical care and offer a research prospectus to strengthen the evidence base for real-world effectiveness.
Clinical Impact Statement Question:In what ways are clients' spirituality, religion, theology, and/or existential concerns relevant in real-world mental health treatment? Findings: Clients' spiritual and religious context have important implications for their symptom alleviation and well-being, and may intersect with other areas of their identity. Meaning: Therapists should consider spirituality as an important diversity area that may be a source of strength or struggle for clients. Next Steps: Ongoing research is needed to understand the nuances of how clients' spirituality is best integrated into psychotherapy with different populations.