Two different questions
A practice doctorate asks: there is a problem in a real setting, what does the existing evidence say we should do about it, what happened when you did that, and did anything measurably change. The contribution is the change, and the evidence you applied already existed.
A research doctorate asks: here is something nobody knows, here is a defensible method for finding out, here is what I found. The contribution is the knowledge, and it did not exist before you produced it.
That is the whole distinction and everything else follows from it. Your literature review, your method, your outcomes and your defense all differ because the two documents are answering different kinds of question.
Where students go wrong, in both directions
The most common error is a practice student writing a research study. They find a genuine gap in the literature, design something to investigate it, and produce work that would be perfectly respectable as a thesis. It comes back, because nothing in a clinical setting changed and no outcome was measured.
The opposite happens too, less often. A research student writes an excellent quality improvement project, complete with an intervention and results, and is asked where the new knowledge is. Applying established evidence well is not the same as producing evidence.
Neither of those is a failure of ability. They are failures of specification, and they are extremely expensive because they are usually discovered after a full draft exists.
- Practice project: a problem in a specific setting, not a gap in the literature
- Practice project: an intervention drawn from existing evidence, applied to that setting
- Practice project: measurable outcomes, before and after, however modest
- Thesis: a question the literature genuinely has not answered
- Thesis: a method that survives interrogation on its own terms
- Thesis: findings that add something, whether or not anybody acts on them
The literature review differs more than you expect
For a practice project the review is instrumental. You are establishing that the problem is real and consequential, and then identifying what the evidence says works. It is closer to a synthesis for decision-making than to a scholarly survey, and its natural end point is a defensible choice of intervention.
For a thesis the review has to do something harder: demonstrate what is known so thoroughly that the gap becomes undeniable. Your entire justification rests on that gap being genuine, which means the review has to be exhaustive in a way a practice review does not.
Students who write the wrong kind produce a chapter that is either too broad to justify an intervention or too narrow to establish a gap. Knowing which job the chapter is doing makes it dramatically easier to finish, and it is the most common place both types stall.
Approval requirements differ too
Whether you need review board approval depends on what you are doing rather than on which degree you hold, and this genuinely confuses people. A quality improvement project confined to a single unit, using data that is already collected as part of care, is often handled differently from research intended to be generalised.
But that determination is not yours to make. Your institution decides, and proceeding on an assumption is the version that causes real trouble, particularly if you later want to publish. Ask early, in writing, and keep the answer.
The practical rule: if you intend to generalise beyond your setting, or you are collecting anything that would not otherwise be collected, assume review is required and plan around the meeting calendar. That planning is worth doing alongside your early chapters rather than after them.
How to settle it before you write
Ask your chair one direct question: is the contribution here a change in practice or a contribution to knowledge? Not which is better, not what your topic is. Which of those two things is this document supposed to deliver.
Then ask for two examples of completed work from your own program that they consider strong. Reading two finished documents from your institution teaches you more about the expected shape than any amount of general guidance, and both are usually available in a repository.
Do this before the proposal rather than after the first draft. Every doctoral student I have worked with who lost a term to this discovered it late, and every one of them could have found out in a single email.
Questions people actually ask
Can a practice project be published?
Often yes, and quality improvement work appears in professional journals regularly. What matters is planning for it early, because approval requirements and reporting standards differ between a local project and something intended for a wider audience. Deciding you want to publish after the work is complete is where the complications usually start.
Does a practice project need statistics?
Usually some, though rarely the inferential machinery a thesis needs. You have to show whether your outcome measure moved, which normally means descriptive statistics and a clear before-and-after comparison. Elaborate analysis on a small single-site sample tends to look like overreach rather than rigour, so match the method to the claim.
What if my chair and my committee disagree about which I'm writing?
Get it settled in writing before you draft anything further, and do it by putting the question to them together rather than privately choosing a side. Disagreements at this level are about expectations rather than about you, and they're far cheaper to resolve at proposal stage than after a complete chapter exists.
I've written the wrong kind. Is any of it salvageable?
Usually more than you'd fear. The literature work is often reusable with a change of framing, and a well-specified problem transfers across. What generally has to be rebuilt is the method and the outcomes. Take it to your chair immediately rather than trying to disguise the mismatch, because it will be visible at the defense.
