Currency
Put the source's publication date into context. Sometimes, you want the most current data; other times, you need older or historical data.
Things to consider about when the source was published:
- Most recent and up-to-date
- New edition or revision of an older work
- Published before, during, or after a major change/event in the field
- Newer research has refuted or challenged its findings
- Contemporaneous - Published when the idea or subject was first exhibited/presented/published
- Example from a specific time period/school of thought