Situational judgment tests relate to UPSC interview effectiveness as they assess a candidate's decision-making, ethical reasoning, and ability to handle complex situations. These tests simulate real-life scenarios that civil servants may encounter, allowing evaluators to gauge responses reflective of candidates' values and priorities. Candidates familiar with common dilemmas in public service can demonstrate their suitability and competency during interviews. Understanding the principles behind these tests helps aspirants prepare better and articulate their thoughts more cogently, contributing to a smoother interview experience.