In the Sciences, primary sources include (but are not limited to):
- Research studies or scientific experiments (tests a hypothesis or measures something and reports results; empirical)
- Papers and proceedings from scientific conferences or meetings
- Dissertations and Theses
- Technical Reports
- Patents
Most articles in scientific databases will be both scholarly and primary resources. But, scholarly secondary sources source do exist. They include:
- Publications about the significance of research or experiments
- Review of the results of several experiments or trials (meta-analyses or literature reviews)
- Analysis of a clinical trial
- Letters to the editor, editorials, perspectives
