Preparing for practical application-based questions in psychology optional requires a comprehensive understanding of the subject matter, as well as a focus on critical thinking and analysis. Here are some strategies to help you prepare effectively:

1. Understand the Syllabus:
- Familiarize yourself with the psychology optional syllabus provided by UPSC.
- Identify the key topics and areas that are likely to be covered in practical application-based questions.

2. Review Previous Year Question Papers:
- Analyze previous year question papers to identify patterns and common themes.
- Pay close attention to the types of practical application-based questions that have been asked in the past.

3. Study and Revise Core Concepts:
- Ensure a thorough understanding of core concepts in psychology.
- Review textbooks, reference materials, and lecture notes to strengthen your knowledge base.
- Focus on topics such as abnormal psychology, social psychology, developmental psychology, and cognitive psychology, as they often have practical applications.

4. Analyze Case Studies:
- Practice analyzing and interpreting case studies to develop critical thinking skills.
- Identify the underlying psychological principles at play in each case.
- Consider the multiple perspectives and possible solutions for each case.

5. Stay Updated with Current Research:
- Keep up with recent research and developments in the field of psychology.
- Read journal articles, research papers, and publications to stay informed about contemporary issues and advancements.
- Relate the findings of current research to practical application-based questions.

6. Practice Answer Writing:
- Regularly practice writing answers to practical application-based questions within the specified time limit.
- Develop a clear and concise writing style that effectively communicates your ideas.
- Use appropriate examples and case studies to support your arguments.

7. Join Discussion Forums:
- Participate in online discussion forums or join study groups to engage in discussions with fellow aspirants.
- Share your perspectives and insights, and learn from others' experiences and knowledge.

8. Seek Guidance from Experts:
- Consult experienced psychology teachers, professors, or subject matter experts for guidance and feedback.
- Their expertise can help you refine your understanding and approach to practical application-based questions.

Remember, consistent practice, thorough understanding of core concepts, and critical thinking skills are key to excelling in practical application-based questions in the psychology optional. Good luck with your preparation!