10 Common Dissertation Mistakes (and How to Fix Them Before Submission)
Writing your dissertation or thesis is easily the most daunting aspect of grad school. But after months, or even years, of research, students torpedo their own timelines (or face painful committee revisions) by making surprisingly simple mistakes late in the game.
As an academic editor who’s helped students prepare their thesis for defense, here are the 10 most common mistakes I see in dissertations and how to fix them before they become deal breakers:
1. Unclear Research Questions
2. Diving Into The Literature Review Too Soon
3. Poor Flow Between Chapters
4. Formatting Inconsistencies
5. Listing Instead of Synthesizing
6. Not Interpreting Your Data
7. Not Checking University Formatting Guidelines
8. Trying to Edit As You Go
9. Lack of Time for Edits & Revisions
10. Losing Your Academic Voice
Let’s break down the mistakes:
1. Unclear Research Questions
The mistake: Broad, narrow, or irrelevant research questions.
Why it hurts: Makes your entire study feel like it lacks purpose.
How to fix it: Refine your questions early in the process. Then revisit them after completing each chapter to ensure they’re still specific, answerable, and match your methodology.
Pro tip: Print out your research questions and tape them above your workspace to constantly remind yourself of your research goals.
2. Diving Into The Literature Review Too Soon
The mistake: Drafting your lit review before clearly articulating your research contribution.
Why it hurts: Your lit review ends up being a summary of other scholars’ work without putting the sources in conversation with one another or identifying the gaps your research fills.
How to fix it: Spend more time writing your introduction and problem statement to clearly define how your research adds value. Then craft your literature review around the gaps your study will address.
3. Poor Flow Between Chapters
The mistake: Chapters that feel repetitive or don’t flow into each other naturally.
Why it hurts: Your entire committee can tell when your dissertation doesn’t flow like a cohesive story.
How to fix it: Craft a clear outline that includes your transitions between chapters. Ask yourself, “Why does this chapter naturally lead to the next section/chapter?” and rearrange sections if things don’t flow.
Hint: Unless you’re a language native, it helps to have someone else read your draft and catch awkward transitions you’ve become blind to. Professional editors are great at this.
4. APA Formatting Inconsistencies and Style Guide Errors
The mistake: Headers not meeting style guide specifications. Errors in in-text citations or references.
Why it hurts: Amateur. And it can even trigger major revisions.
How to fix it: Decide which style guide to follow early on and download the formatting guidelines from the official website. Refer back to it frequently and use citation software like Zotero or EndNote. Finally, do a pass specifically for consistency before you submit.
5. Listing Instead of Synthesizing
The mistake: Literature review or discussion chapters that summarily list sources rather than weaving them into a scholarly conversation.
Why it hurts: Your ability to synthesize high-level academic conversations and make your own contribution is the entire point of your dissertation. If you simply list what others have said and move on, you’ll fail to demonstrate this.
How to fix it: After summarizing each source, ask yourself, “So what?” Then explicitly connect that research back to your own research questions.
Hint: Aim to showcase your scholarly voice throughout your dissertation and not just in your intro/dissertation defense.
6. Not Interpreting Your Data
The mistake: Thesis writers simply dump their data or tables into their text without clarifying what the reader should take away from said information.
Why it hurts: Committee members will get lost in your numbers and draw their own conclusions. You want them reading your interpretations, not guessing at them.
How to fix it: Never present data without leading with your interpretation. Utilize visuals that add value and refer back to your research questions/research contribution when explaining your results.
7. Not Checking Your University’s Dissertation Formatting Requirements
The mistake: Thinking that general style guide rules will suffice.
Why it hurts: You’d be surprised at how many students get tripped up during the prelims of their dissertation (alignment of heading levels, margin size, or abstract length).
How to fix it: Download your university’s dissertation formatting template and follow it to a T.
Hint: This includes correct headers for EACH section of your dissertation and following any guidelines for your dissertation defense.
8. Trying To Edit While Writing (or Not Editing At All)
The mistake: Editing as you write or re-write. Only doing one pass of proofreading before submission.
Why it hurts: When you try to edit while writing, you often miss larger conceptual issues. And not doing multiple passes at editing allows small errors to slip through the cracks.
How to fix it: Write your dissertation first, edit it second. Take a break after completing your draft so you can return to it with fresh eyes. Then follow a systematic editing checklist to find common types of errors. Finally, consider professional editing help for the last polish before submission (no one can catch every error (grammar or otherwise…trust me).
Quick tip: Turn off your wifi when editing. Preventing yourself from browsing during your editing/proofreading sessions will keep you focused.
9. Underestimating Time Needed for Edits & Revisions
The mistake: Leaving all editing and formatting for the last month (or week!) before your deadline.
Why it hurts: When you cut yourself too short on time, you’ll have to submit something that isn’t 100%. This will likely lead to more feedback from your committee. And more headaches for you.
How to fix it: Leave time for ample edits and revisions. If your schedule is tight, working with an editor can actually save you time and make you more efficient.
Hint: This is one area where many successful grad students use professional editing support. Especially for those final tweaks to grammar, formatting, and defense preparation.
10. Losing Your Academic Voice
The mistake: Using an automated grammar tool that edits you into oblivion. Losing your nuanced arguments in a sea of edits.
Why it hurts: Your dissertation doesn’t sound like YOU.
How to fix it: Work with an editor who understands academic voice and offers clear fixes that keep your tone consistent but your voice intact.
When should you hire a professional editor for your dissertation?
As always, editing your dissertation is largely about priorities. But many graduate students we’ve worked with employed a professional editor during the final phase of their dissertation writing, particularly for developmental feedback, line editing, formatting, or defense prep. Your editor should act as your academic ally, not just a QA person clicking through your Word doc.
Need advice? Book a free consultation chat with me! I offer Personalized Playbooks, custom editing & strategy services built around your specific needs and goals.
If you’re ready to take the plunge on professional dissertation editing, click here to schedule a free Discovery Call to discuss your dissertation and get a custom quote.