Here's a breakdown:
* Primary research involves collecting original data through experiments, surveys, interviews, etc. This is the first-hand, raw information.
* Secondary research analyzes and interprets information that has already been collected and published by others. This includes data found in:
* Journals (academic publications)
* Books
* Websites
* Reports
* Government documents
* News articles
* Databases
Essentially, secondary research relies on existing knowledge and provides a summary, analysis, or different perspective on existing research.