Extrinsic and intrinsic motivations influence UPSC aspirants by shaping their approach to preparation. Extrinsic factors like job security, societal respect, and financial stability can drive candidates to perform well. Conversely, intrinsic motivations such as passion for public service and personal growth create a deeper commitment to studies. Balancing both types of motivation can optimize performance, as intrinsic factors often sustain long-term engagement during challenging preparation periods.