Interview performance significantly impacts the overall ranking of UPSC candidates, as it accounts for a substantial portion of the total score. The interview, or Personality Test, assesses candidates' communication skills, critical thinking, and overall personality traits. A strong performance can elevate a candidate's ranking, especially if their written exam scores are close to competitors. Furthermore, the interview offers an opportunity to showcase attributes that written exams cannot capture, such as leadership qualities and problem-solving abilities. Thus, excelling in the interview stage can be the decisive factor for candidates in securing coveted positions within the civil services.