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Primary vs. Secondary Sources  

How to differentiate among primary, secondary, and tertiary sources in the research process
Last Updated: May 19, 2011 URL: http://geiselguides.anselm.edu/primarysecondary Print Guide RSS Updates
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Introduction

Often your professor will suggest that you use primary, secondary, or tertiary materials for your research project. It is not always easy to discern the difference between these resources.

Use the chart at right to help you understand these distinctions.  Please consult your professor or a librarian if you are unsure about identifying a particular source in this manner.

 

Handout Version

For a one-page handout of this guide's content, download this:

Primary vs. Secondary handout

 

Primary vs. Secondary vs. Tertiary Sources

PRIMARY SECONDARY TERTIARY
DEFINITION An original object or document-the raw research or first-hand information. Comments on, interpretations of, or discussions about the primary or original source. Provide background information or compilations by synthesizing information gathered from other sources, usually secondary sources.
TIMING Primary sources usually come first in the timing of scholarly publication. Secondary sources usually come second in the timing of scholarly publication. Tertiary sources usually come third or last in the timing of scholarly publication.
TYPES • Letters & diaries
• Speeches and interviews
• First-hand news accounts
• Government reports
• Laws and legislation
• Creative writings (ex. novels or poetry)
• Results of scientific experiments
• Critical reaction to an
experiment or to a piece of literature
• Analysis of social, cultural or economic trends
• Review of the literature on a topic
• Overviews or background info
(ex. encyclopedias)
• Compilation of citations and
abstracts (ex. library
databases)
• Statistical handbooks
EXAMPLES    Politics Major
(studying terrorism in the wake of the 9/11 attacks)
National Commission on Terrorist Attacks upon the United States. (2004). The 9/11 Commission report: final report. New York: Norton. Carpenter, T. (2005, Winter). Missed Opportunities: The 9/11 Commission Report and US Foreign Policy. Mediterranean Quarterly, 16(1), 52–61. • Worldwide Political Science Abstracts (Library database)
• Encyclopedia of terrorism and
political violence
EXAMPLES    English Major
(studying creative writings about terrorism)
Updike, J. (2006). Terrorist (a novel). New York: Alfred A. Knopf. Steyn, M. (2006, July 31). Why John Updike's book is a bomb. Maclean's, 119 (29), 58–59. • Literature Resource Center (Library database)
• Miller, R. (1988). The literature of terrorism. Terrorism 11 (1), 63-87.
EXAMPLES  Psychology Major
(studying the psychological effects of the 9/11 Attacks on children)
Schuster, M. A., B. D."A National Survey of Stress Reactions After the September 11, 2001 Terrorist Attacks," New England Journal of Medicine, Vol. 345, No. 20, November 15, 2001, pp. 1507–1512. Alexander, G. (2007). International relations theory meets world politics. In Understanding the Bush Doctrine: Psychology and strategy in an age of terrorism (pp. 39–64). New York, NY, US: Routledge/Taylor & Francis Group. • PsycINFO (Library database)
• Kazdin, A. E. (2000).
Encyclopedia of psychology.
Washington, D.C.: American Psychological Association.
EXAMPLES
Biology Major
(studying bioterrorism)
United States. (2003). Project Bioshield Act of 2003 report (to accompany H.R. 2122). Washington, D.C.: U.S. G.P.O. Alexander, D., & Klein, S. (2003, December). Biochemical terrorism: too awful to contemplate, too serious to ignore: subjective literature review. British Journal of Psychiatry, 183 (6), 491–497. • Biological Sciences (Library database)
• Pilch, R. F., & Zilinskas, R. A.
(2005). Encyclopedia of bioterrorism defense.
Hoboken, N.J.: Wiley-LISS.

 

This chart was adapted from a research guide prepared by the Library at the University of North Carolina Wilmington.

 

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      Finding Primary Sources

      For help with locating primary sources, see:

      How to Find Primary Sources

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