Negative marking in the UPSC prelims significantly impacts candidates' strategies during the examination. Each incorrect answer results in a deduction of marks, which can alter overall scores dramatically. This policy encourages aspirants to approach questions with increased caution, prioritizing accuracy over wild guessing. Consequently, candidates often emphasize thorough understanding and decision-making skills in their preparation. The risk of negative marking can lead to heightened stress, often affecting performance. Understanding and strategizing around this policy is crucial for aspirants aiming to secure a place in subsequent examination stages.