Reports of original research, usually results of lab experiments.
Contains the following:
- Materials & Methods
Key phrases include:
- "we tested"
- "in our study, we measured..."
Literature Review Articles
Critical evaluations of material already published.
Does the following:
- Defines or clarifies a problem
- Summarizes previous investigations
- Identifies problems or gaps in knowledge
- Suggests the next steps
No physical (lab) research done.