How to Be Critical and Original in Your PhD

One of the biggest challenges in a PhD is moving beyond simply summarising what others have said and developing your own critical voice. You might have been told to ‘be more critical’ or to ‘make an original contribution,’ but what does that actually mean in practice?

Critical thinking and originality are at the heart of academic research. Without them, a PhD is little more than a collection of other people’s ideas. But these skills don’t appear overnight. They take time to develop, and they require a shift in how you engage with research, structure your arguments, and position yourself within your field.

This guide will take you through the essentials of critical thinking in academic writing, how to balance confidence and rigour in your analysis, and how to articulate your originality effectively.

What Does It Mean to Be Critical?

Criticality is often misunderstood. Many people assume it means being negative or tearing down other people’s work, but that’s not the case. Being critical means evaluating research carefully—looking at its strengths, limitations, assumptions, and implications. It’s about engaging with the material rather than just accepting it at face value.

A useful way to think about critical thinking is as a hierarchy:

Description – Summarising what others have said.
Analysis – Breaking down the argument, methods, and evidence used.
Evaluation – Identifying strengths, limitations, and gaps.
Synthesis – Connecting different ideas to build a more comprehensive perspective.
Contextualisation – Placing research within the bigger picture, showing why it matters.

If your writing is mostly descriptive, it’s time to push further up this hierarchy. A good literature review, for example, doesn’t just list what others have said—it evaluates, compares, and identifies gaps or tensions between studies.

How to Practise Being Critical

• Ask ‘why’ and ‘so what’ questions – Why did the author use this method? So what does this mean for my research?
• Compare different studies – Do they contradict each other? Why might that be?
• Consider assumptions – What is taken for granted in this research? Could a different approach change the conclusions?
• Look at the bigger picture – Where does this research sit in the wider landscape of your field?

Balancing Confidence and Constructive Criticism

A common struggle for PhD students is how to be critical without being overly negative—or, on the other hand, being too hesitant to critique research they respect. The key is to balance rigour with fairness.

How to Critique Without Being Harsh

Acknowledge strengths – Even if you find limitations, recognise what the study contributes.
Frame critiques constructively – Instead of saying a study is ‘flawed,’ explain how it could be improved or what future research should address.

Avoid overgeneralising – A single limitation doesn’t make a study worthless; every piece of research has constraints.

At the same time, don’t be afraid to challenge ideas. Academic research thrives on debate, and your PhD isn’t just about summarising what others have said—it’s about demonstrating independent thought.

What Does It Mean to Be Original?

You’ve probably been told that a PhD needs to make an original contribution to knowledge. But originality can feel like an intimidating concept. Do you need to come up with a brand-new theory? A ground-breaking discovery? Not necessarily.

Originality can take many forms. Here are seven ways your research might be original:

• Asking a new question – Investigating something that hasn’t been explored before.
• Using a new method – Applying an innovative approach or combining existing methods in a novel way.
• Exploring a new context – Applying existing theories to a different geographical, cultural, or social setting.
• Bringing together different ideas – Synthesising concepts from different fields to generate new insights.
• Developing a new framework or model – Proposing a new way of understanding a problem.
• Offering a fresh interpretation – Challenging existing assumptions or rethinking established theories.
• Providing new empirical data – Collecting and analysing data that hasn’t been explored before.
• How to Identify Your Own Originality

To articulate your originality, ask yourself:

• What am I adding that hasn’t been said before?
• How does my approach differ from previous studies?
• In what way am I building on, challenging, or extending existing knowledge?
• Your originality doesn’t have to be revolutionary. It just needs to move the conversation forward in a meaningful way.

Making Your Contribution Explicit

A common mistake in PhD writing is assuming that your contribution is obvious. It might be clear to you, but your examiners need to see it spelled out clearly.

How to Highlight Your Contribution:

• Throughout your thesis – Don’t leave it until the conclusion to explain your originality.
• Reference it in the introduction, methodology, literature review, and findings.
• In your final chapter – Be explicit about how your research advances knowledge, what the key takeaways are, and why they matter.
• In your viva – Be prepared to confidently explain your originality and how it fits into the wider field.

If you struggle to pinpoint your contribution, try writing a one-sentence summary:

“My research contributes to [field] by [specific contribution].”

This forces you to clarify exactly what you are adding.

Final Thoughts

Developing a critical mindset and articulating originality are essential skills for PhD success. They take time to build, but they are what transform your research from a summary of existing work into a meaningful contribution to your field.

If you find yourself struggling, don’t worry—you’re not alone. These skills improve with practice, feedback, and reflection. Keep questioning, keep refining your arguments, and most importantly, keep pushing your research forward.

Your PhD is not just about finding answers. It’s about learning how to think critically, challenge ideas, and carve out your own space in academia. That is what makes your work original.

If you need expert guidance to develop your critical thinking, articulate your originality, or refine your PhD writing, you can get in touch for a one-on-one supervision session or join us on an upcoming Masterclass.