Skip to Main Content

ELR_HSAD 619: Advanced Research

Evaluating Sources During the Initial Search Process

When you first encounter a potential source, you'll want to know very quickly whether it is worth reading in detail and considering for your research. To avoid wasting time on unhelpful sources as much as possible, you can the following two strategies to evaluate your sources during the initial search process.

  1. Understand the different types of sources you will most likely encounter in your research. The Information Pyramid below describes the most common types of sources and arranges them in a pyramid shape with the least reliable at the bottom and the most reliable at the top. By understanding the type of sources that fill your information need, you can focus on those more quickly while searching.
  2. Ask questions about your sources that help you determine if the source is reliable and appropriate to your information need. The CRAAP mnemonic below offers an easy way to remember to ask questions about your source's currency, reliability, authority, accuracy and purpose.

The Information Pyramid

Image created by Maria R. Barefoot on 6/10/2016

Top of the Pyramid Sources

Literature Review is a comprehensive survey of the works published in a particular field of study or line of research, usually over a specific period of time, in the form of an in-depth, critical bibliographic essay or annotated list in which attention is drawn to the most significant works.

Also, we can define a literature review as the collected body of scholarly works related to a topic:

  • Summarizes and analyzes previous research relevant to a topic
  • Includes scholarly books and articles published in academic journals
  • Can be an specific scholarly paper or a section in a research paper

An empirical research article (original research) is an article which reports research based on actual observations or experiments. The researcher may have used quantitative methods, which generate numerical data and seek to establish causal relationships between two or more variables, or the researcher may have used qualitative methods, which objectively and critically analyze behaviors, beliefs, feelings, or values with few or no numerical data available for analysis.

systematic review answers a defined research question by collecting and summarizing all empirical evidence that fits pre-specified eligibility criteria.

meta-analysis is the use of statistical methods to summarize the results of independent studies. By combining information from all relevant studies, meta-analysis can provide more precise conclusions than an individual study.

Not all systematic reviews contain meta-analysis. 

CRAAP Test

A helpful mnemonic to remember the evaluation criteria, CRAAP is an acronym for:

  • Currency
  • Relevance
  • Authority
  • Accuracy
  • Purpose

Helpful questions for initial evaluation:

  • When was this source published?
  • Is this source relevant to your topic?
  • What are the author or author's qualifications?
  • Is the resource scholarly/peer-reviewed?
  • Are sources cited to support the author's claims?
  • Does the website or journal the sources comes from have a bias to their reporting?
  • Do you notice biased or emotional language in the summary or introduction?
  • Do you notice spelling or grammatical errors in a quick examination of the source?