Communication skills greatly influence performance during the UPSC interview. Candidates must articulate their thoughts clearly and confidently to convey their understanding of various topics and current affairs. Good communication enables aspirants to respond effectively to questions, showcasing their analytical abilities and reasoning. Moreover, non-verbal cues such as body language and eye contact play a significant role in creating a positive impression. Developing these skills can help candidates manage their nerves and express themselves more persuasively, ultimately improving their chances of success in the interview process.