@inproceedings{zhang-etal-2026-unmasking, title = "Unmasking Superficial Honesty: Mechanistic Head-Driven Activation Steering for Sycophancy-Free Medical {VLM}s", author = "Zhang, Mengliang and Challa, Prajwal and Gao, Wentao", editor = "Lee, Hung-Yi and Dev, Sunipa and Li, Jessy and Elliott, Desmond", booktitle = "Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing", month = oct, year = "2026", address = "Budapest, Hungary", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/2026.emnlp-main.1732/", pages = "39531--39544", ISBN = "979-8-89176-459-0" }