Writing an Introduction section can be difficult, in particularly knowing what to include and what to leave for later. To assist here, a helpful template is CARS, Create A Research Space. It uses three “moves”, starting very wide, and gradually zooming in on the specifics.
Move 1: Establish The Territory
At the beginning of the paper, the reader barely know which research area is being addressed. So, you need to start wide, and answer two questions.
- What is the problem?
- Aren’t there available solutions already?
This is done in three steps.
- Claim centrality. Be bold.
- Present a classic problem in the selected area. Again, be bold.
- Review previous research. As the problem is so common, other researchers have obviously worked on this for a while. Be nice to them, they provided the pillars on which you stand.
Move 2: Establish a Niche
Explain why this paper is needed, separating it from the previous work. This can normally be done in one of four ways, so select the one that fits best.
- Counter-claiming. Maybe the previous work was wrong?
- Indicate a gap. Very few solutions work in all situations, and you may have identified one where the previous work either doesn’t work at all, or is bad.
- Question raising. Maybe there is room for improvement with the existing solutions?
- Continue a tradition. It may simply be time to repeat a previous study.
Move 3: Occupy the Niche
Now, explain why the paper expands the body of knowledge.
- Clearly explain the purpose of this paper, for example in the form of research questions or hypotheses.
- Present your main findings, listing the contributions. This is basically the Results and Discussion sections, compressed into a single paragraph. Be concrete and specific. If there are multiple authors, it may be a good idea to state who did what, as a “Statement of contributions” list.
- Provide an overview of the rest of the paper. Doing this as a list of “section X contains this, section Y contains that” is typically super boring, so it can be better to integrate this into the previous two points.