Updated: Last Updated: Aug 12, 2026

What are inclusion and exclusion criteria? Are they different from search limits?

Yes, they are different! Inclusion and exclusion criteria are the specific rules you (or a researcher) decide on before you begin searching to determine exactly what kind of information is eligible for your project or research study.

  • Inclusion criteria are your "must-haves." These are the elements that must be present in an article for you to use it.
  • Exclusion criteria are your “dealbreakers.” These are the elements that immediately disqualify an article from your research.

Search limits are the actual clickable filters built into a database (like checking a "Peer-Reviewed" box or choosing a "Publication Date" range) that help you narrow down your search results.

Your criteria and your search limits will often overlap but remember: the criteria form your overall research strategy, and the search limits are how you carry out that strategy in the databases.



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