How to Write a Scientific Research Paper

To write a scientific research paper, you follow the IMRaD structure: Introduction, Methods, Results and Discussion. Each section answers one question, so readers can find exactly what they need.

This page explains each section, the order to write them in, how to handle figures and tables, how course papers differ from journal papers, and finishes with an editing checklist.

Title and Abstract

The title should state the topic and, ideally, the main finding or variables in about 10 to 15 words. "Effect of Temperature on Catalase Activity in Potato Extract" tells the reader exactly what to expect.

The abstract summarizes the whole paper in one paragraph, usually 150 to 250 words. Give one or two sentences each to the background, aim, method, key results with numbers, and conclusion.

Introduction

The introduction moves from the general to the specific, like a funnel. It ends with the exact question or hypothesis your study tests.

1. Establish the topic and why it matters.
2. Summarize what is already known, with citations.
3. Identify the gap, problem or unanswered question.
4. State your aim, hypothesis or research question.

Keep it focused. A literature review that wanders across the whole field weakens the case for your specific study.

Methods

The methods section should let a competent reader repeat your work. Give enough detail to reproduce it, and no more.

• Materials, equipment and suppliers where relevant, with concentrations and units.
• Study design, sample size and how samples were chosen.
• Procedure in logical order, using subheadings for complex methods.
• Data analysis: software, statistical tests and significance level.
• Ethical approval for work with people or animals.

Write in the past tense. Most journals now accept the active voice ("We measured...") as well as the passive ("The absorbance was measured..."); follow your course or target journal.

Results

The results section reports what you found, without interpreting it. Lead with the key finding, then support it with figures, tables and statistics.

• Describe the main trends in the text and refer to each figure or table by number.
• Report statistics fully, such as t(18) = 2.45, p = .025, with means and standard deviations.
• Do not repeat every number from a table in the text; highlight what matters.
• Report results that did not support the hypothesis as clearly as those that did.

Discussion

The discussion explains what the results mean. It moves from the specific back to the general, the reverse of the introduction.

1. Restate the main finding and whether it supports the hypothesis.
2. Interpret it, with reasons and mechanisms.
3. Compare it with previous studies, explaining agreements and differences.
4. Acknowledge limitations and their likely effect on the results.
5. State the implications and suggest specific future work.

Do not claim more than your data shows. A correlation in a small sample supports "suggests", not "proves".

Writing Order

Few scientists write a paper in the order it is read. This sequence usually works best:

1. Figures and tables, because they define what the paper shows.
2. Methods, while the details are fresh.
3. Results, built around the figures.
4. Discussion.
5. Introduction, now that you know exactly what it must set up.
6. Abstract and title last.

Figures and Tables

Figures and tables carry your evidence, so they must stand alone. A reader should understand each one from its caption without reading the text.

• Number figures and tables separately, in order of first mention.
• Place figure captions below figures and table captions above tables.
• Label axes with quantity and unit, and say what error bars represent.
• Use a table when exact values matter and a graph when the trend matters.

Course Papers Versus Journal Papers

Editing Checklist

How STEM Donkey Helps with Research Papers

Send the brief, your data or results, any sources you must use, the required citation style and the rubric. Say whether the paper follows a journal template.

You receive a custom research paper written from scratch in IMRaD format, with a focused introduction, reproducible methods, results reported from your own data and a balanced discussion, all plagiarism-checked. It is for study and reference; we never invent data. Free revisions within the scope of your original request are included.