Aspirants can foster interdisciplinary research skills by engaging with various fields such as politics, economics, and sociology relevant to UPSC topics. They should participate in study groups that encourage diverse perspectives, seek mentorship from experts in different disciplines, and adopt a holistic approach to understanding current affairs. Additionally, attending workshops or seminars focusing on different areas can also enhance their ability to draw connections between distinct topics, thereby enriching their analytical capabilities and making them more adept at tackling multifaceted issues in the exam.