Aim: In this study, we address the issue of low adherence to self-guided internet interventions. With established links between low adherence and unfavorable intervention outcomes, identifying modifiable factors that can improve adherence is crucial. While existing predictors have limited applicability, this study introduces the concept of context-specific self-efficacy, which has the potential to enhance adherence to internet interventions. We present a protocol for a randomized controlled trial to investigate whether enhancing internet intervention adherence self-efficacy improves actual adherence and intervention outcomes.

Methods: The protocol presents a 2-phased randomized controlled trial. In Phase 1, the effectiveness of adherence self-efficacy enhancing exercise will be assessed in comparison to a waitlist control condition (N = 216). In Phase 2, a two-arm trial will be conducted with 720 medical students, wherein all participants will receive a Med-Stress Student internet intervention to reduce job stress and promote well-being. However, the experimental group will be preceded by the self- efficacy enhancing exercise developed in Phase 1.

Results: We anticipate that the experimental group will exhibit improved adherence to the intervention and better intervention outcomes compared to the control group. These outcomes include decreased stress levels and increased work engagement, which will be measured at post-test, six-month, and one-year follow-ups.Conclusions: If effective, enhancing context-specific self-efficacy may be suggested as a feasible strategy to boost participant adherence before any internet intervention. This innovative approach has the potential to advance the field of self-guided internet interventions and pave the way for more effective and scalable projects.