To CoT or not to CoT? Chain-of-thought helps mainly on math and symbolic reasoning - Sprague, Zayne; Yin, Fangcong; Rodriguez, Juan; Jiang, Dongwei; Wadhwa, Manya; Singhal, Prasann; Zhao, Xinyu; Ye, Xi; Mahowald, Kyle; Durrett, Greg (International Conference on Learning Representations, 2025)