@article{
jia2026from,
title={From Decorative to Load-Bearing: Task Difficulty Shapes the Causal Role of Chain-of-Thought},
author={Renee Jia and DI MU},
journal={Transactions on Machine Learning Research},
issn={2835-8856},
year={2026},
url={https://openreview.net/forum?id=TiZQnKDIHq},
note={}
}