Whether a thesis is mandatory for obtaining a PhD degree can vary depending on the country, university, and specific program. Here are five reasons why a thesis is often required for a PhD degree:


Original Research Contribution

One of the primary purposes of a PhD program is to train individuals to conduct original research. A thesis demonstrates the candidate's ability to contribute to their field by conducting independent, significant research.

Depth of Knowledge

Writing a thesis requires in-depth knowledge of a specific topic within the field of study. It forces the candidate to explore existing literature, theories, and methodologies comprehensively.

Critical Thinking and Problem-Solving

The process of planning, executing, and presenting a thesis encourages critical thinking and problem-solving skills. Candidates must identify research gaps, design experiments or studies, analyze data, and draw meaningful conclusions.

Communication Skills

A thesis is a written document that must effectively convey complex research findings, arguments, and conclusions. It hones the candidate's ability to communicate their work clearly and persuasively, a crucial skill for academics and researchers.


Theses are typically evaluated by a committee of experts in the field. This rigorous evaluation ensures that the research meets the high standards expected of a PhD, adding credibility to the degree.

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