The article titled “Enhancing Social Interaction in Depression (SIDE) Study: Protocol of a Randomised Controlled Trial on the Effects of a Cognitively Based Compassion Training (CBCT) for Couples” outlines the protocol for a randomized controlled trial on the effects of Cognitively Based Compassion Training (CBCT) for couples affected by depression. The study aims to explore whether CBCT can improve social interaction between couples affected by depression, and thereby improve depressive symptoms and quality of life. The study involves a group of couples who will participate in an 8-week CBCT intervention, which includes weekly 2-hour sessions and daily home practice. The study will use a range of measures to assess the effects of the CBCT intervention on social interaction, depressive symptoms, and quality of life. The authors suggest that CBCT could be a valuable intervention for couples affected by depression, and that the study could contribute to a better understanding of the role of social interaction in depression. Overall, the study highlights the potential of CBCT as an intervention for improving the well-being of couples affected by depression.