What is a PhD?

A PhD is a doctoral research degree and the highest level of academic qualification you can achieve. The degree normally takes between three and four years of full-time work towards a thesis offering an original contribution to your subject.

This page explains what a PhD is, what it involves and what you need to know if you’re considering applying for a PhD research project, or enrolling on a doctoral programme.

The PhD can take on something of a mythic status. Are they only for geniuses? Do you have to discover something incredible? Does the qualification make you an academic? And are higher research degrees just for people who want to be academics?

Even the full title, ‘Doctor of Philosophy’, has a somewhat mysterious ring to it. Do you become a doctor? Yes, but not that kind of doctor. Do you have to study Philosophy? No (not unless you want to).

So, before going any further, let's explain what the term 'PhD' actually means and what defines a doctorate.

What does PhD stand for?

PhD stands for Doctor of Philosophy. This is one of the highest level academic degrees that can be awarded. PhD is an abbreviation of the Latin term (Ph)ilosophiae (D)octor. Traditionally the term ‘philosophy’ does not refer to the subject but its original Greek meaning which roughly translates to ‘lover of wisdom’.

What is a doctorate?

A doctorate is any qualification that awards a doctoral degree. In order to qualify for one you need to produce advanced work that makes a significant new contribution to knowledge in your field. Doing so earns you the title 'Doctor' – hence the name.

So, is a PhD different to a doctorate? No. A PhD is a type of doctorate.

The PhD is the most common type of doctorate and is awarded in almost all subjects at universities around the world. Other doctorates tend to be more specialised or for more practical and professional projects.

Essentially, all PhDs are doctorates, but not all doctorates are PhDs.

Do you need a Masters to get a PhD?

Not necessarily. It's common for students in Arts and the Humanities to complete an MA (Master of Arts) before starting a PhD in order to acquire research experience and techniques. Students in Science, Technology, Engineering and Mathematics (STEM) don't always need an MS/MSc (Master of Science) to do a PhD as you'll gain training in lab techniques and other skills during your undergraduate degree.

Whether a Masters is a requirement for a PhD also varies by country. Australian PhDs may require a Masters as the equivalent of their own 'honours year' (where students work on research). US PhD programmes often include a Masters.

We have a whole guide dedicated to helping you decide whether a PhD without a Masters is the right route for you.

The origin of the PhD

Despite its name, the PhD isn't actually an Ancient Greek degree. Instead it's a much more recent development. The PhD as we know it was developed in nineteenth-century Germany, alongside the modern research university.

Higher education had traditionally focussed on mastery of an existing body of scholarship and the highest academic rank available was, appropriately enough, a Masters degree.

As the focus shifted more onto the production of new knowledge and ideas, the PhD degree was brought in to recognise those who demonstrated the necessary skills and expertise.

The typical length of a PhD is three to four years full-time, or five to six years part-time.

Unlike most Masters courses (or all undergraduate programmes), a PhD is a pure research degree. But that doesn’t mean you’ll just spend years locked away in a library or laboratory. In fact, the modern PhD is a diverse and varied qualification with many different components.

Whereas the second or third year of a taught degree look quite a lot like the first (with more modules and coursework at a higher level) a PhD moves through a series of stages.

A typical PhD normally involves:

• Carrying out a literature review (a survey of current scholarship in your field).
• Conducting original research and collecting your results.
• Producing a thesis that presents your conclusions.
• Writing up your thesis and submitting it as a dissertation.
• Defending your thesis in an oral viva voce exam.

These stages vary a little between subjects and universities, but they tend to fall into the same sequence over the three years of a typical full-time PhD.

The first year of a PhD

The beginning of a PhD is all about finding your feet as a researcher and getting a solid grounding in the current scholarship that relates to your topic.

You’ll have initial meetings with your supervisor and discuss a plan of action based on your research proposal.

The first step in this will almost certainly be carrying out your literature review. With the guidance of your supervisor you’ll begin surveying and evaluating existing scholarship. This will help situate your research and ensure your work is original.

Your literature review will provide a logical jumping off point for the beginning of your own research and the gathering of results. This could involve designing and implementing experiments, or getting stuck into a pile of primary sources.

The year may end with an MPhil upgrade. This occurs when PhD students are initially registered for an MPhil degree and then ‘upgraded’ to PhD candidates upon making sufficient progress. You’ll submit material from your literature review, or a draft of your research findings and discuss these with members of your department in an upgrade exam. All being well, you’ll then continue with your research as a PhD student.

The second year of a PhD

Your second year will probably be when you do most of your core research. The process for this will vary depending on your field, but your main focus will be on gathering results from experiments, archival research, surveys or other means.

As your research develops, so will the thesis (or argument) you base upon it. You may even begin writing up chapters or other pieces that will eventually form part of your dissertation.

You’ll still be having regular meetings with your supervisor. They’ll check your progress, provide feedback on your ideas and probably read any drafts your produce.

The second year is also an important stage for your development as a scholar. You’ll be well versed in current research and have begun to collect some important data or develop insights of your own. But you won’t yet be faced with the demanding and time-intensive task of finalising your dissertation.

So, this part of your PhD is a perfect time to think about presenting your work at academic conferences, gaining teaching experience or perhaps even selecting some material for publication in an academic journal. You can read more about these kinds of activities below.

The third year of a PhD

The third year of a PhD is sometimes referred to as the writing up phase.

Traditionally, this is the final part of your doctorate, during which your main task will be pulling together your results and honing your thesis into a dissertation.

In reality, it’s not always as simple as that.

It’s not uncommon for final year PhD students to still be fine-tuning experiments, collecting results or chasing up a few extra sources. This is particularly likely if you spend part of your second year focussing on professional development.

In fact, some students actually take all or part of a fourth year to finalise their dissertation. Whether you are able to do this will depend on the terms of your enrolment – and perhaps your PhD funding.

Eventually though, you are going to be faced with writing up your thesis and submitting your dissertation.

Your supervisor will be very involved in this process. They’ll read through your final draft and let you know when they think your PhD is ready for submission.

All that’s left then is your final viva voce oral exam. This is a formal discussion and defence of your thesis involving at least one internal and external examiner. It’s normally the only assessment procedure for a PhD. Once you’ve passed, you’ve done it!

You can think of the ‘stages’ outlined above as the basic ‘roadmap’ for a PhD, but the actual ‘journey’ you’ll take as a research student involves a lot of other sights, a few optional destinations and at least one very important fellow passenger.

Carrying out research

Unsurprisingly, you’ll spend most of your time as a PhD researcher… researching your PhD. But this can involve a surprisingly wide range of activities.

The classic image of a student working away in the lab, or sitting with a pile of books in the library is true some of the time – particularly when you’re monitoring experiments or conducting your literature review.

Your PhD can take you much further afield though. You may find yourself visiting archives or facilities to examine their data or look at rare source materials. You could even have the opportunity to spend an extended period ‘in residence’ at a research centre or other institution beyond your university.

Research is also far from being a solitary activity. You’ll have regular discussions with your supervisor (see below) but you may also work with other students from time to time.

This is particularly likely if you’re part of a larger laboratory or workshop group studying the same broad area. But it’s also common to collaborate with students whose projects are more individual. You might work on shorter projects of joint interest, or be part of teams organising events and presentations.

Many universities also run regular internal presentation and discussion groups – a perfect way to get to know other PhD students in your department and offer feedback on each other’s work in progress.

Working with your supervisor

All PhD projects are completed with the guidance of at least one academic supervisor. They will be your main point of contact and support throughout the PhD.

Your supervisor will be an expert in your general area of research, but they won’t have researched on your exact topic before (if they had, your project wouldn’t be original enough for a PhD).

As such, it’s better to think of your supervisor as a mentor, rather than a teacher.

As a PhD student you’re now an independent and original scholar, pushing the boundaries of your field beyond what is currently known (and taught) about it. You’re doing all of this for the first time, of course. But your supervisor isn’t.

They’ll know what’s involved in managing an advanced research project over three years (or more). They’ll know how best to succeed, but they’ll also know what can go wrong and how to spot the warning signs before it does.

Perhaps most importantly, they’ll be someone with the time and expertise to listen to your ideas and help provide feedback and encouragement as you develop your thesis.

Exact supervision arrangements vary between universities and between projects:

• In Science and Technology projects it’s common for a supervisor to be the lead investigator on a wider research project, with responsibility for a laboratory or workshop that includes several PhD students and other researchers.
• In Arts and Humanities subjects, a supervisor’s research is more separate from their students’. They may supervise more than one PhD at a time, but each project is essentially separate.

It’s also becoming increasingly common for PhD students to have two (or more) supervisors. The first is usually responsible for guiding your academic research whilst the second is more concerned with the administration of your PhD – ensuring you complete any necessary training and stay on track with your project’s timetable.

However you’re supervised, you’ll have regular meetings to discuss work and check your progress. Your supervisor will also provide feedback on work during your PhD and will play an important role as you near completion: reading your final dissertation draft, helping you select an external examiner and (hopefully) taking you out for a celebratory drink afterwards!

Professional development, networking and communication

Traditionally, the PhD has been viewed as a training process, preparing students for careers in academic research.

As such, it often includes opportunities to pick up additional skills and experiences that are an important part of a scholarly CV. Academics don’t just do research after all. They also teach students, administrate departments – and supervise PhDs.

The modern PhD is also viewed as a more flexible qualification. Not all doctoral graduates end up working in higher education. Many follow alternative careers that are either related to their subject of specialism or draw upon the advanced research skills their PhD has developed.

PhD programmes have begun to reflect this. Many now emphasise transferrable skills or include specific training units designed to help students communicate and apply their research beyond the university.

What all of this means is that very few PhD experiences are just about researching and writing up a thesis.

The likelihood is that you’ll also do some (or all) of the following during your PhD:

Teaching

PhD researchers are often given the opportunity to teach undergraduates at their university. This generally involves leading small group teaching exercises, demonstrating methods and experiments and providing mentoring.

The work is usually paid and is increasingly accompanied by formal training and evaluation.

Conference presentation

As a PhD student you’ll be at the cutting edge of your field, doing original research and producing new results. This means that your work will be interest to other scholars and that your results could be worth presenting at academic conferences.

Doing this is very worthwhile, whatever your career plans. You’ll develop transferrable skills in public speaking and presenting, gain feedback on your results and begin to be recognised as an expert in your area.

Conferences are also great places to network with other students and academics.

Publication

As well as presenting your research, you may also have the opportunity to publish work in academic journals, books, or other media. This can be a challenging process.

Your work will be judged according to the same high standards as any other scholar’s and will normally go through extensive peer review processes. But it’s also highly rewarding. Seeing your work ‘in print’ is an incredible validation of your PhD research and a definite boost to your academic CV.

Public engagement and communication

Academic work may be associated with the myth of the ‘ivory tower’ – an insular community of experts focussing on obscure topics of little interest outside the university. But this is far from the case. More and more emphasis is being placed on the ‘impact’ of research and its wider benefits to the public – with funding decisions being made accordingly.

Thankfully, there are plenty of opportunities to try your hand at public engagement as a PhD student. Universities are often involved in local events and initiatives to communicate the benefits of their research, ranging from workshops in local schools to public lectures and presentations.

Some PhD programmes include structured training in order to help students with activities such as the above. Your supervisor may also be able to help by identifying suitable conferences and public engagement opportunities, or by involving you in appropriate university events and public engagement initiatives.

These experiences will be an important part of your development as a researchers - and will enhance the value of your PhD regardless of your career plans.

What is a PhD for – and who should study one?

So, you know what a PhD actually is, what’s involved in completing one and what you might get up to whilst you do. That just leaves one final question: should you do a PhD?

Unfortunately, it’s not a question we can answer for you.

A PhD is difficult and uniquely challenging. It requires at least three years of hard work and dedication after you’ve already completed an undergraduate degree (and probably a Masters degree too).

You’ll need to support yourself during those years and, whilst you will be building up an impressive set of skills, you won’t be directly progressing in a career.

But a PhD is also immensely rewarding. It’s your chance to make a genuine contribution to the sum of human knowledge and produce work that other researchers can (and will) build on in future. However obscure your topic feels, there’s really no such thing as a useless PhD.

A PhD is also something to be incredibly proud of. A proportionately tiny number of people go on to do academic work at this level. Whatever you end up doing after your doctorate you’ll have an impressive qualification – and a title to match. What’s more, non-academic careers and professions are increasingly recognising the unique skills and experience a PhD brings.

Is a PhD for me?

There’s more advice on the value of a PhD – and good reasons for studying one – elsewhere in this section. But the following are some quick tips if you’re just beginning to consider a PhD.

Speak to your lecturers / tutors

The best people to ask about PhD study are people who’ve earned one. Ask staff at your current or previous university about their experience of doctoral research – what they enjoyed, what they didn’t and what their tips might be.

If you’re considering a PhD for an academic career, ask about that too. Are job prospects good in your field? And what’s it really like to work at a university?

Speak to current PhD students

Want to know what it’s like studying a PhD right now? Or what it’s like doing research at a particular university? Ask someone who knows.

Current PhD students were just like you a year or two ago and most will be happy to answer questions.

If you can’t get in touch with any students ‘face to face’, pop over to the Postgraduate Forum – you’ll find plenty of students there who are happy to chat about postgraduate research.

Take a look at advertised projects and programmes

This may seem like a strange suggestion. After all, you’re only going to study one PhD, so what’s the point of reading about lots of others?

Well, looking at the details of different PhD projects is a great way to get a general sense of what PhD research is like. You’ll see what different PhDs tend to have in common and what kinds of unique opportunity might be available to you.

And, with thousands of PhDs in our database, you’re already in a great place to start.

Read our other advice articles

Finally, you can also check out some of the other advice on the FindAPhD website. We’ve looked at some good (and bad) reasons for studying a PhD as well as the value of a doctorate to different career paths.

More generally, you can read our in-depth look at a typical PhD journey, or find out more about specific aspects of doctoral study such as working with a supervisor or writing your dissertation.

We add new articles all the time – the best way to stay up to date is by signing up for our free PhD opportunity newsletter.

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