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Mrs. Adams

Research Toolkit

Evaluating Sources

Finding a source is only the beginning. Learn how to investigate who created it, understand what it says, examine its evidence, and decide how confidently you can use it.

Do not ask only, “Is this source credible?”

Ask whether the source is credible for this claim, relevant to this inquiry, and supported by evidence strong enough for the conclusion being made.

Credibility is a judgment you explain, not a label you assign.
1

Investigate

Examine the source’s origin, author, purpose, perspective, relevance, and academic quality.

2

Verify

Read laterally, trace important claims, and find out what other credible sources say.

3

Understand

Navigate the article and determine what the researcher actually found.

4

Decide

Evaluate the evidence, recognize limitations, and choose how to use the source.

One framework. Six essential questions.

Our Source Credibility Guide combines the strongest parts of common evaluation systems into one process adapted from Turnitin’s student resources.

OriginWhere did it come from?
AuthorWho created it?
PurposeWhy was it made?
PerspectiveWhat position shapes it?
RelevanceHow does it fit the inquiry?
Academic QualityHow strong is its support?
Open the Source Credibility Guide →
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Each feature is a clue, not a verdict.

A domain, publication type, credential, or apparent bias never determines credibility by itself. Investigate how each feature affects this source’s value for this inquiry.

Three judgments students often confuse

A strong evaluation considers each question separately.

Credibility

How trustworthy is the source or evidence for this purpose?

Relevance

How directly does it connect to the inquiry or claim?

Usefulness

What specific role can it play in the investigation?

Evaluation sounds like: “This source is credible because ______ and relevant because ______. However, ______ limits how confidently I can use it.”

Your evaluation should lead to a decision

Do not finish with “This source is credible.” Decide how the source belongs, or does not belong, in your inquiry.

Use it confidently

The source and evidence are credible, relevant, and appropriate for the claim.

Use it with qualification

Useful, but its perspective, methods, date, or limitations affect how strongly you can rely on it.

Use it for perspective or context

It may reveal a stakeholder’s position even when it is not strong factual evidence.

Trace or corroborate it

Find the original evidence or confirm the claim through independent credible sources.

×

Do not use it

The source is too weak, misleading, irrelevant, or unsupported for your purpose.

Continue the evaluation

Choose the situation that matches what you are working with right now.

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Online Verification

Verify Online Information

Read laterally, trace claims to their origins, practice click restraint, and find out what other credible sources say.

Verify the information
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Academic Reading

Read a Research Article

Navigate the abstract, literature review, methods, results, discussion, and limitations without reading blindly from beginning to end.

Learn the anatomy
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Evidence Quality

Evaluate the Evidence

Determine whether specific evidence is credible, relevant, sufficient, and strong enough to support the author’s claim.

Test the evidence
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Mrs. Adams' Tip

If you cannot explain why a source is credible and how its evidence supports a specific claim, you are not finished evaluating it.