The Interview (Personality Test) in the UPSC selection process is crucial as it evaluates candidates’ personal attributes, communication skills, and overall suitability for a career in civil services. Conducted after the Mains examination, it holds a significant weight in the final ranking. The interview panel assesses qualities like leadership, stability, and ethical decision-making. While academic knowledge is essential, the interview emphasizes a candidate's personality, which can sway final selection, especially among candidates with similar exam scores.