Scientific Writing: IMRaD

Scientific writing is a clear, organized way of communicating research, evidence, and scientific findings. Unlike creative or persuasive writing, scientific writing focuses on presenting information so readers can understand the research process, evaluate evidence, and follow how conclusions were reached.

One of the most common structures used in scientific writing is IMRaD.

• I: introduction
• M: methods
• R: results
• D: discussion

Introduction

The purpose of the introduction is to give background information on the specific research topic, connect your research to existing scholarship, and introduce the research question, purpose, or hypothesis.

This section is similar to traditional academic essay introductions; it sets the stage by providing the information readers need to understand the topic and why the research is important. This section leads up to your research objective and will vary in length depending on the necessary context.

• Background: give an overview of your research topic by explaining your research using key concepts and terms. Explain why your research is necessary or helpful to explore.
• Review of literature: synthesize previous scholarship and theories to give the reader information about your research topic. State how your research fills a gap in the broader community of study.
• Research objective: describe the purpose behind the research to guide the paper. This objective can also be called a research question, hypothesis, solution statement, or thesis.

Methods

The methods section explains what you did, how you did it, and why you chose those methods. It should provide enough detail for another researcher to understand or replicate your study. This section is typically written in past tense and should focus on the research process rather than the findings.

• Process: explain the steps you followed to conduct the research, including how you collected and analyzed your data.
• Tools and Instruments: identify the materials, software, devices, or research methods you used and explain why they were appropriate.
• Context: provide relevant information about the research setting, timeline, and your role as the researcher.
• Sample/Participants: describe who or what you studied, including sample size, how the sample was selected, and relevant characteristics.
• Validity and Reliability: explain how you ensured that your methods accurately measured what you intended to measure and produced consistent results.

Remember to include details that are relevant to understanding or replicating your research. Avoid unnecessary information that does not affect the study.

Results

The results section presents the facts and data collected during your research. Its purpose is to clearly report what you found without interpreting, explaining, or drawing conclusions. Results may include both quantitative (numeric) and qualitative (descriptive) data.

• Raw Data: report your findings accurately and objectively without explaining what they mean or why they occurred.
• Visualizing Data: use tables, graphs, charts, figures, or lists when they help communicate your findings clearly. Place visuals close to where they are discussed in the text.
• Statistical Significance: when appropriate, report relevant statistical measures, such as the mean, standard deviation, z-score, p-value, or F-test, alongside your findings.
• Be Concise: focus on presenting the most relevant findings and avoid repeating the same information in multiple formats.

The results section answers “What did you find?” The interpretation of those findings belongs in the discussion section.

Discussion

The discussion section interprets your results and explains why they matter. It connects your findings back to the research objective or question introduced at the beginning of your paper and situates your findings within existing scholarship. Unlike the Results section, the Discussion explains what your findings mean and why they are significant.

• Summarize: briefly review your main findings and explain whether they support your research objective or question. Address any unexpected or unusual findings.
• Interpret and Analyze: explain what your results mean, their implications, and the conclusions that can be drawn from the data.
• Connect to Scholarship: compare your findings with the research and literature discussed in your Introduction. Identify where your findings align with or differ from previous research.
• Limitations: acknowledge limitations or challenges that may have affected your research, results, or ability to generalize your findings.
• Future Research: identify questions or areas that future research could explore. Consider how your findings could be applied in future research, practice, or policy.

The discussion answers “What do these findings mean, and why do they matter?” Avoid introducing entirely new evidence or information. Instead, focus on interpreting the results you have already presented and connecting them back to your research.

Optional Sections

IMRaD traditionally includes the sections above (Introduction, Methods, Results, and Discussion) but can often include other sections depending on your field or assignment. However, there may also be additional segments.

• Abstracts: give a comprehensive summary of what your paper will cover. They are located before the introduction, and their purpose is to concisely summarize your paper. Abstracts are typically limited to no more than 250 words and one paragraph in length, with no indentation, and should have details from each of your sections, including your findings.
• Appendices: contain figures, graphs, tables, charts, data, and other supporting references that are useful but may interrupt the flow of the main paper. Move these materials to the end of the paper to keep the main text clear and accessible. Include an appendix only if it helps readers understand, evaluate, or replicate the study or theoretical arguments being made. Follow the required citation/style guide for formatting.
• Conclusions: share common formats with discussions, but need to focus on key takeaways and suggestions for future research.

Want Feedback on Your Science Writing?  

Writing tutors at Student Success can help you get started on your IMRD structure or work with you on what you’ve written! Book a one-on-one appointment or drop-in session through the Student Success Portal. 

References

Chloe Smith, Writing Services, Wilfrid Laurier University, CC By-NC 2026