I am co-supervising a PhD student who is handing in her thesis for examination in November. She is currently revising her whole thesis, working towards the conclusion (and finally, the introduction). Conclusions can be tricky things to write – pulling something as big as a PhD dissertation together into a final, clear chapter is not easy. It is both an intellectual and an emotional challenge, as conclusion-writing comes towards the very end of the process, and you are so tired, and probably feeling like there are no more coherent words or sentences in your brain. This post reflects a little on what a thesis conclusion is for, with some thoughts on how to construct one that does justice to your meisterwerk.
To begin with, let’s think a bit about what conclusions are for in a piece of written work. In undergraduate studies, students are typically taught that conclusions are summaries. You restate the thesis, or main claim, of your paper, reiterate what each paragraph has said that contributes to that argument, and then bring it all together with a firm final sentence or two that says something about the relevance of the paper, or argument. There should be no new information, just a summing up of what has already been said. Sometimes you are allowed recommendations, depending on the discipline. It makes sense, then, that we progress into postgraduate studies believing that we are writing summaries whenever we conclude (a paper, or a journal article, or a thesis). I have seen many conclusions like this in postgraduate, postdoctoral and early career writing. But, unfortunately, at these levels conclusions that merely summarise a paper the reader has just read are not adequate, or suitable. A shift is needed.
As Pat Thomson usefully argues in this post about writing a thesis conclusion, the conclusion to a thesis (or journal article) is not a summary of the whole. The summary part of a thesis conclusion should ideally be quite brief, and used rather as a springboard to the real work of the conclusion: using the preceding writing and research to show how the study has addressed the research questions, and in so doing, how it has made a valid, and useful, contribution to knowledge.
A strong conclusion shows your readers what your research means within the context of the field you have referenced in your ‘literature review’, and how in answering your research questions you have been able to speak back to this body of research in which you have located your own study. It answers your research questions, succinctly and clearly, so that your readers understand the overall claims of your study, the focus of your argument, the basis upon which you have advanced your argument, and the significance, meaning or value of that argument to your (their) field. It discusses – argues – for the place of your research within your field, and the contribution it is making.
There are a few ways in which you can approach writing such a conclusion (and Pat’s post above is very helpful here). There are also a few guidelines to consider in writing this vital part of your thesis.
To begin with, you do need to bring your reader up to speed with the thesis thus far. Examiners and other readers are unlikely to read your whole PhD in one go, so ending each chapter with a brief summary, and starting the next one with a short section that connects the present chapter to the previous one is a good idea for creating coherent connections between chapters, and is helpful for your readers. Thus, you should begin your conclusion with an overview, or brief summary, of the argument thus far.
Then, consider your research questions: what did you set out to do in this project or study? Your research questions could make useful sub-headings here, at least in a first draft, to help you organise your thoughts. Starting here, you can begin to pull out the answers you have found (in the ‘analysis chapter/s’) so that you can discuss the implications of your findings, their relevance in relation to your overall argument, and the way in which what you have found relates to the body of research to which you have connected your study. No new information: just an analytical discussion of selected aspects of your findings that are useful for answering your research questions, and further consolidating your argument.
Perhaps you have recommendations, on the basis of your findings and their implications for practice, and/or further research. You could include a section on these, discussing a step further the possible implications of your research in relation to your field. Something else that may be relevant to include here could be limitations to the size or scope of your findings: are there any that your readers need to know about, so that they don’t expect your study to have done something other than what it has done? Don’t just list all the things you could have done but didn’t do: think carefully about pertinent limitations that may represent counter-arguments you could defend or mitigate against.
At the end of the end, consider your argument again: what has your thesis claimed and to what end? Try to end your thesis with a paragraph that reiterates not just what your thesis has argued, but WHY this argument has relevance, or import, for your readers. What do you hope the outcome of your research will be? Why are you so passionate about it, and why do you think others should care too? Read a few thesis conclusions to get a sense of different ways of doing this, and check out Pat Thomson’s posts on conclusion writing, too. Then write a draft and share it with your supervisor for feedback.
It’s worth really taking your time and not rushing this chapter, even as it comes at the end when you are tired, and really just want to be done. End on the highest note you can: you owe yourself that much after all your hard work getting there.