Evaluating Sources for Credibility

Main ideas & lessons

• Credible sources provide high-quality, trustworthy information that you can believe.
• Using credible sources strengthens your writing by showing your argument is supported by reliable evidence.
• High-quality research builds on other high-quality research—this applies to both students’ work and professional scholarship.
• To judge credibility, consider multiple factors:
  • Author expertise/credentials
  • Publication quality (even when credentials aren’t listed)
  • Point of view / potential bias
  • Editorial or peer review processes
  • Publication date / how up-to-date the information is
• Even credible sources may be inappropriate if they don’t fit your specific argument (for example, you may need newer data).

Factors to evaluate source credibility (detailed checklist)

1) Author’s expertise

• Look for signs of advanced education (e.g., an advanced degree) or extensive experience in the field.
• Check whether the source provides the author’s credentials.

2) Publication / editorial standards

• If credentials aren’t listed, the publication itself can indicate quality.
• For reputable non-scholarly outlets (e.g., major newspapers or magazines), the content is critically examined through an established editorial process.

3) Point of view and bias

• Consider whether the source may present information in an inaccurate or unfair way.
• Bias may be:
  • Intentional: a group with an agenda sponsors research or information, shaping results.
  • Unintentional: the writer’s perspective may limit awareness of all sides.
• Use this lens strategically:
  • Sometimes you need unbiased facts.
  • Other times you may use opinions, but you should acknowledge the source’s perspective.
• Note that bias can appear in any type of source, including library materials.

4) Peer review / rigorous editorial filtering (for academic work)

• Books and articles often undergo rigorous editorial evaluation by editors or scholars.
• For journal articles, the quality process is often peer review.
• Peer review is expected to:
  • Help exclude work by unqualified or biased authors.
  • Improve overall reliability.

5) Publication date / currency

• Check when the source was published or last updated.
• A source can become out-of-date and unsuitable for certain purposes.
• Example logic:
  • Current statistics (e.g., average college cost now) require recent sources; a source from the 1990s would likely be too old.
  • For long-term trends (e.g., tuition increases over decades), an older source might still be useful.

Practical takeaway

When choosing sources, evaluate both:

• Trustworthiness (credibility)
• Appropriateness (whether it matches what your argument needs)

Speakers / sources featured

• No individual speakers named.
• Source types/processes referenced: editorial processes, peer review, books, journal articles, reputable newspapers and magazines.
• Institutional prompt referenced: “Ask A Librarian” (from the Libraries homepage).