A Large-Group 1-Day RCT Investigating the Effectiveness of Four Different Strategies to Promote the Outcome of Exposure Therapy in 519 Patients with Phobic Fear of Flying

Findings support the efficacy and scalability of LG-OST, while suggesting that tailoring preparatory strategies to specific mechanisms may have limited added value. They also highlight the need to advance mechanistic research to better understand the intertwined processes underlying exposure success. Future work should focus on improving accessibility and sustaining long-term gains.