Objectives: Explore learning processes associated with a psychoeducational pain selfmanagement intervention. Background: Self-management of cancer pain is challenging for patients and their family caregivers (FCs). While psychoeducational interventions can support them to handle these tasks, it remains unclear how learning processes are hampered or facilitated. Methods: A convergent parallel mixed methods design with qualitative data collection embedded in a randomized controlled trial (RCT) was used.