How to write the results and discussion chapter
Contents
The results chapter of your paper presents your findings objectively—the "what." The discussion chapter is where you interpret those findings—the "so what." Poorly written discussion sections are a major reason why manuscripts are rejected, with top journals turning away up to 90% of submissions. A strong discussion doesn't just repeat results; it explains their meaning, compares them to other studies, acknowledges limitations, and suggests future research.
How do you turn raw data into meaningful findings?
The trick is to treat the results and discussion chapters as two different jobs. The results section simply reports what you found, presenting your data objectively without any interpretation. The discussion section then explains what it means and why it matters in the context of your research question.
Your results chapter is purely descriptive. It's where you lay out the numbers, statistics, and observations you collected, often using tables and figures. Think of it as presenting the evidence. The discussion, however, is where you build your case. You stop being a data collector and become an interpreter. You explain how your data answers your original research questions and contributes to the ongoing conversation in your field. This is the difference between stating that "Group A scored 15% higher than Group B" and explaining why that might be and what it implies.
A good analogy is the iceberg. The results are the tip of the iceberg—the visible part that everyone can see. The discussion is the huge, submerged section below the surface that holds the deeper meaning, context, and implications.
| Results Chapter | Discussion Chapter |
|---|---|
| What did you find? | What does it mean? |
| Presents data objectively | Interprets the data's significance |
| Uses tables, figures, statistics | Uses arguments, explanations, context |
| Reports the "what" | Explains the "so what" and "why" |
| Stays close to the data | Connects data to theory and practice |
Why is the discussion chapter the intellectual argument of your study?
Your discussion chapter transforms your paper from a record of activities into a persuasive intellectual argument. It's often the hardest section to write, but it's where you prove your research makes a real contribution. This is where you connect your findings back to the big questions you asked in your introduction.
So far, your paper has described what you did (methods) and what you found (results). Now, you have to guide the reader through the meaning of it all. The discussion is your chance to show your critical thinking. How do your results fit with what other researchers have found? Do they support existing theories, or do they challenge them? Answering these questions well is what separates a decent paper from a great one.
A strong discussion chapter includes five key elements: a summary of your findings, your interpretation of them, their broader implications, an honest look at your study's limitations, and suggestions for future research.
This is your platform to build a narrative that explains what your work adds to the world. You’re no longer just reporting numbers; you’re connecting the dots and showing the reader why your work matters. This is why many guides call it the "intellectual hub" of a dissertation.
How can you avoid rejection from top journals?
Getting published is difficult. A 2016 analysis found that rejection rates at top journals can reach 90%. While a flawed study design can be the cause, many rejections come down to something you can control: a poorly written discussion chapter and incorrect formatting.
A weak discussion is a huge red flag for reviewers. If you just repeat your results or fail to explain their significance, the paper will likely be rejected. Reviewers want to see that you understand the implications of your own work. A discussion that is unfocused, overly speculative, or doesn't connect with existing studies won't make it through peer review.
Don't wait until all your research is finished to begin writing. Many successful researchers draft parts of the manuscript, including the discussion, during the project. This helps you spot gaps in your logic or problems with your methods while you still have time to fix them.
Another key is to remember that research is about discovery, not just proving a hypothesis. You have to go where the data leads, even if it's somewhere unexpected. A discussion that honestly wrestles with surprising or inconclusive results is much more credible than one that tries to force the data to fit your original expectations. Be honest.
How do you get to the "why" and not just the "what"?
To write a discussion that explains the "why," you have to do more than just restate your results. You need to interpret them and place them in a broader context. Following a clear structure is the best way to make sure you cover all the bases and build a logical argument.
Start by briefly summarizing your most important findings—just a clear, high-level overview. Second, offer your interpretations. What do you think these results mean? Connect them directly to your research questions. Third, compare your findings with other studies in your field. Do your results confirm or contradict what others have found? Why? Fourth, discuss the implications. What's the real-world significance of your work? Fifth, honestly acknowledge your study's limitations. No study is perfect, and showing you see its weaknesses builds credibility. Finally, suggest clear directions for future research based on what you've learned.
Imagine a study found a correlation between sleep and memory (r = 0.61, p < .001). A weak discussion just repeats this fact. A strong discussion explains it: "The significant positive correlation we found between sleep and memory supports consolidation theory, which suggests slow-wave sleep is crucial for long-term storage. This link held even after controlling for age, suggesting it is a fundamental biological phenomenon."
Be careful not to confuse correlation with causation. Unless you ran a controlled experiment, you can't say one thing caused another. If your data is observational, use phrases like "is associated with," "is linked to," or "is related to." Avoid "causes" or "leads to."
By following this structure, you guide the reader from your specific data points to their wider importance. You’re telling the story of what your facts actually mean.
Frequently Asked Questions
What's the main difference between the results and discussion chapters?
The results chapter objectively reports what you found, presenting your data without interpretation. The discussion chapter interprets those findings, explaining what they mean and why they are important. The results are the evidence; the discussion is the argument you build with that evidence.
What elements should a well-written discussion section include?
A strong discussion section should summarize your key findings, interpret their meaning, compare them to previous studies, explain their broader significance, acknowledge the study's limitations, and suggest directions for future research. This structure creates a complete intellectual argument.
How can I avoid common mistakes when writing the discussion?
The most common mistakes are simply repeating the results, overstating the importance of your findings, or ignoring your study's limitations. To avoid these, focus on interpretation, stay grounded in your data, and be transparent about what your study could and couldn't accomplish.
How important is comparing my findings to existing literature?
It's critical. Placing your results in the context of previous research demonstrates your understanding of the field. This allows you to show how your work confirms, challenges, or extends existing knowledge, which is the core purpose of academic scholarship.
When should I start writing the discussion section?
While you can't finalize it until you have your results, it's wise to start drafting it early. Writing as you conduct your research can help you refine your ideas and spot weaknesses in your study design before it's too late to address them.
How should I structure my discussion chapter for the most impact?
A common and effective structure is to move from specific to general. Start by summarizing your key findings, then interpret them, then place them in the context of the literature, and finish by discussing broader implications and future directions. This creates a logical flow.
How should I talk about my study's limitations?
Be honest and direct. Frame your study's limitations not as failures but as boundaries that define the scope of your conclusions. This approach builds your credibility as a careful and thoughtful researcher. You can then use these limitations to suggest how future studies might build on your work.
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