UPSC evaluates candidates' critical thinking skills through various examination formats, particularly in the Mains and interview stages. In the Mains, answers require analytical thinking, where candidates must assess complex issues and present coherent arguments. The Ethics paper specifically gauges a candidate's ability to apply moral reasoning to real-world dilemmas. During the personal interview, evaluators look for original thought processes and the ability to reason logically under pressure. Overall, the exams are designed to not just test knowledge but also how candidates apply critical reasoning and problem-solving abilities to diverse situations.