7.2 Research Skills and Sources

Finding and Evaluating Sources

In the age of information overload, the ability to find reliable sources and evaluate their credibility is one of the most important academic skills you can develop. Every day, millions of articles, blog posts, social media updates, and videos are published online. Some of this content is rigorously researched and peer-reviewed; much of it is not.

As an academic writer, you are expected to support your arguments with credible evidence -- which means going beyond a simple Google search and developing a systematic approach to research. In this chapter you will learn to distinguish between primary and secondary sources and know when to use each, navigate academic databases, apply the CRAAP test to evaluate reliability, and recognize bias and misinformation. A well-researched essay is only as strong as its weakest source, so these skills are foundational to everything else in academic work.

Primary and Secondary Sources

Understanding the difference between primary and secondary sources is fundamental to research. Primary sources are original, first-hand accounts or direct evidence that has not been filtered through someone else's interpretation. Examples include original research articles reporting new findings, historical documents (letters, diaries, government records), literary works (novels, poems, plays), interviews and speeches, photographs and artworks, raw data, and legal documents like constitutions and court rulings. Secondary sources analyse, interpret, or comment on primary sources, providing context, evaluation, or summary. Examples include textbooks and encyclopedias, review articles, biographies, literary criticism, documentaries, and newspaper articles reporting on research.

When should you use each? Use primary sources when you want to analyse original evidence directly, and secondary sources when you need expert analysis, context, or an overview of a field. The strongest academic writing typically uses both. A crucial subtlety is that the same source can be primary or secondary depending on your research question. Consider these examples: a speech by Martin Luther King Jr. is a primary source (an original document to analyse directly); a textbook chapter about the Civil Rights Movement is secondary (it interprets and summarizes events); survey data collected from 500 Norwegian teenagers is primary (original raw data); a newspaper article summarizing that survey is secondary (it interprets the data); George Orwell's novel 1984 is primary (the original text to be studied); and a literary analysis essay about 1984 is secondary (it interprets the primary text). Recognizing this distinction sharpens your ability to use evidence appropriately.

The CRAAP Test

To evaluate whether a source is reliable, librarians at California State University, Chico developed the CRAAP Test -- a framework with five criteria.

C -- Currency: When was the source published or last updated? For fast-changing fields like technology or medicine, recent sources are essential; for historical or literary analysis, older sources may be perfectly valid. R -- Relevance: Does the source address your specific research question, and is it at an appropriate level of depth? A -- Authority: Who is the author, what are their qualifications, and are they affiliated with a reputable institution? A -- Accuracy: Is the information supported by evidence, can the claims be verified, are there citations, and has it been peer-reviewed? P -- Purpose: Why does this source exist -- to inform, persuade, sell, or entertain -- and is there a potential bias? You can rate each criterion from 1 (unreliable) to 5 (highly reliable); a total below 15 out of 25 suggests the source should be used with caution or avoided.

Apply this to a real example: a blog post titled "Why Vaccines Are Dangerous," published on a personal website in 2018 by someone identifying as a "health researcher" with no institutional affiliation. Currency scores low-to-medium (2018, but vaccine science updates constantly). Relevance is medium (useful only as an example of anti-vaccine rhetoric, not as medical information). Authority scores very low (no verifiable credentials). Accuracy scores very low (not peer-reviewed, contradicting scientific consensus). Purpose scores very low (persuasion with a predetermined conclusion). The total -- around 8 out of 25 -- marks it as unreliable for medical claims, though it could serve as a primary source in an essay about misinformation. To find reliable sources in the first place, use academic databases like Google Scholar, JSTOR, and Oria, which provide peer-reviewed material far superior to general web searches.

Summary

In an age of information overload, finding and evaluating reliable sources is a foundational academic skill. Primary sources are original, first-hand materials (documents, data, literary texts), while secondary sources interpret or analyse them -- and the same source can be either, depending on the research question. The CRAAP test (Currency, Relevance, Authority, Accuracy, Purpose) provides a systematic framework for evaluating reliability, as shown by rating an unreliable anti-vaccine blog. Academic databases like Google Scholar, JSTOR, and Oria provide peer-reviewed material far superior to general web searches. Critical evaluation of sources is not optional in academic work -- it demonstrates intellectual rigour, and a well-researched essay is only as strong as its weakest source.