arXiv AI By Zilu Tang, Jongin Kim, Kerem Sahin, David Atkinson, Aaron Mueller, Derry Wijaya

Interventional Training Reduces Causal Bypass in In-Context Introspection

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The paper investigates how language models (LMs) can introspect their internal signals and identifies a problem called causal bypass, where self-reports depend on correlated but causally unrelated signals. By training hundreds of introspectors on low‑level signals across multiple LMs, the authors show that standard supervised fine‑tuning (SFT) often leads to causal bypass. They propose interventional training, which trains models to report on counterfactually perturbed values, and demonstrate that this approach yields more accurate introspection for both endogenous and injected signals, even on out‑of‑distribution data, and that the method generalizes across token positions and scales with more data.

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