Introduction:
Preparing for the PSIR (Political Science and International Relations) exam can be a challenging and time-consuming process. Some topics may prove to be more difficult than others, requiring extra time and effort for revision. In this response, we will discuss whether it is advisable to allocate extra time for the revision of challenging topics during the preparation phase for PSIR.

Importance of Revision:
Revision plays a crucial role in the learning process. It helps consolidate knowledge, reinforce understanding, and identify areas of weakness. Allocating extra time for the revision of challenging topics allows candidates to strengthen their understanding and improve their performance in those areas.

Identification of Challenging Topics:
During the preparation phase, candidates should identify the topics that they find particularly challenging. This can be done through self-assessment tests, practice papers, or seeking guidance from mentors or teachers. By identifying these topics, candidates can focus their revision efforts on areas that need improvement.

Benefits of Allocating Extra Time:
1. Deepening Understanding: Challenging topics often require more time and effort to fully comprehend. Allocating extra time for revision allows candidates to delve deeper into these topics, gaining a more comprehensive understanding.

2. Building Confidence: By revisiting challenging topics, candidates can build confidence in their knowledge and abilities. This increased confidence can greatly benefit them during the actual exam, helping them tackle difficult questions with a clearer mindset.

3. Addressing Weaknesses: Allocating extra time for revision allows candidates to address their weaknesses in specific topics. By identifying and rectifying these weaknesses, candidates can improve their overall performance in the PSIR exam.

4. Enhancing Retention: Regular revision helps improve retention of information. By revisiting challenging topics multiple times, candidates can reinforce their understanding and increase the chances of retaining key concepts and theories.

Conclusion:
In conclusion, allocating extra time for the revision of challenging topics during the preparation phase for PSIR is advisable. This approach allows candidates to deepen their understanding, build confidence, address weaknesses, and enhance retention of information. By focusing on challenging topics, candidates can significantly improve their performance in the PSIR exam.