Aspirants can bolster their negotiation skills for effective communication in the UPSC interview by practicing active listening, empathy, and articulation. Engaging in mock interviews with peers or mentors allows candidates to simulate real-life scenarios, enhancing their confidence and ability to navigate challenging conversations. Furthermore, understanding different negotiation styles and adapting to various situations can improve interpersonal dynamics. Developing a clear, concise communication style while remaining open to feedback helps candidates present their viewpoints effectively. Additionally, studying conflict resolution techniques can equip aspirants with tools to handle objections and foster constructive dialogue, crucial for success in the UPSC interview.