Do LLMs Need to Think in One Language? Correlation between Latent Language and Task Performance. - Shintaro Ozaki; Tatsuya Hiraoka; Hiroto Otake; Hiroki Ouchi; Masaru Isonuma; Benjamin Heinzerling; Kentaro Inui; Taro Watanabe; Yusuke Miyao; Yohei Oseki; Yu Takagi (CoRR, 2025)