When conducting scientific research, Armani believes it’s important to test a hypothesis-not prove it. She recruits students who are willing to adopt that "testing" mentality, and are excited to explore the unknown

Andrea Armani’s 10-step formula for writing a scientific paper is useful to anyone who feels the dread of the blank page looming

01 January 2020

By Andrea Armani

At any given time, Andrea Armani’s lab at the University of Southern California has up to 15 PhD students, a couple of postdocs, nine undergrads, and an occasional high school student, all busy developing new materials for diagnostic and telecommunications devices.

When conducting scientific research, Armani believes it’s important to test a hypothesis—not prove it. She recruits students who are willing to adopt that “testing” mentality, and are excited to explore the unknown. “I want them to push themselves a little bit, push the field a little bit, and not be afraid to fail,” she says. “And, know that even if they fail, they can still learn something from it.”

Armani often coaches students through the process of writing their first scientific paper. Her 10-step formula for writing a scientific paper could be useful to anyone who has concluded a study and feels the dread of the blank page looming.

1. Write a vision statement

What is the key message of your paper? Be able to articulate it in one sentence, because it's a sentence you'll come back to a few times throughout the paper. Think of your paper as a press release: what would the subhead be? If you can't articulate the key discovery or accomplishment in a single sentence, then you're not ready to write a paper.

The vision statement should guide your next important decision: where are you submitting? Every journal has a different style and ordering of sections. Making this decision before you write a single

word will save you a lot of time later on. Once you choose a journal, check the website for requirements with regards to formatting, length limits, and figures.

2. Don't Start at the Beginning

Logically, it makes sense to start a paper with the abstract, or, at least, the introduction. Don't. You often end up telling a completely different story than the one you thought you were going to tell. If you start with the introduction, by the time everything else is written, you will likely have to rewrite both sections.

3. Storyboard the Figures

Figures are the best place to start, because they form the backbone of your paper. Unlike you, the reader hasn't been living this research for a year or more. So, the first figure should inspire them to want to learn about your discovery.

A classic organizational approach used by writers is "storyboarding" where all figures are laid out on boards. This can be done using software like PowerPoint, Prezi, or Keynote. One approach is to put the vision statement on the first slide, and all of your results on subsequent slides. To start, simply include all data, without concern for order or importance. Subsequent passes can evaluate consolidation of data sets (e.g., forming panel figures) and relative importance (e.g., main text vs. supplement). The figures should be arranged in a logical order to support your hypothesis statement. Notably, this order may or may not be the order in which you took the data. If you're missing data, it should become obvious at this point.

4. Write the Methods Section

Of all the sections, the methods section is simultaneously the easiest and the most important section to write accurately. Any results in your paper should be replicable based on the methods section, so if you've developed an entirely new experimental method, write it out in excruciating detail, including setup, controls, and protocols, also manufacturers and part numbers, if appropriate. If you're building on a previous study, there's no need to repeat all of those details; that's what references are for.

One common mistake when writing a methods section is the inclusion of results. The methods section is simply a record of what you did.

The methods section is one example of where knowing the journal is important. Some journals integrate the methods section in between the introduction and the results; other journals place the methods section at the end of the article. Depending on the location of the methods section, the contents of the results and discussion section may vary slightly.

5. Write the Results and Discussion Section

In a few journals, results and discussion are separate sections. However, the trend is to merge these two sections. This section should form the bulk of your paper-by storyboarding your figures, you already have an outline!

A good place to start is to write a few paragraphs about each figure, explaining: 1. the result (this should be void of interpretation), 2. the relevance of the result to your hypothesis statement (interpretation is beginning to appear), and 3. the relevance to the field (this is completely your opinion). Whenever possible, you should be quantitative and specific, especially when comparing to prior work. Additionally, any experimental errors should be calculated and error bars should be included on experimental results along with replicate analysis.

You can use this section to help readers understand how your research fits in the context of other ongoing work and explain how your study adds to the body of knowledge. This section should smoothly transition into the conclusion.

6. Write the Conclusion

In the conclusion, summarize everything you have already written. Emphasize the most important findings from your study and restate why they matter. State what you learned and end with the most important thing you want the reader to take away from the paper-again, your vision statement. From the conclusion, a reader should be able to understand the gist of your whole study, including your results and their significance.