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Nutrition 499 (Kim): Original Research & Review Articles

This research guide will point you toward print/online research resources and strategies available to you for your Research Paper Assignment in Nutrition 499. Use this guide throughout the research process to help you have the best support for your thesi

Parts of an Article

Empirical v Review Articles

Information provided by UCLA 

Parts of Primary/Original Research

Typical Parts of Primary/Original Research Studies

For this assignment, you are asked to locate primary/original research studies.


Primary Sources in the Sciences:

  • Report original research, ideas, or scientific discoveries for the first time
  • Report results/findings/data from experiments or research studies
  • May also be referred to as primary research, primary articles, empirical research, or research studies
  • DO NOT include meta-analyses, systematic reviews, or literature reviews - these are secondary sources
  • Are frequently found in peer-reviewed or scholarly journals
  • Should explain the research methodology used (randomized controlled trial, etc)
  • Frequently include methods, results, and discussion sections

Secondary Sources in the Sciences:

May be referred to as meta-analyses, systematic reviews, or literature reviews 

Examples include:

  • Publications about the significance of research or experiments
  • Review of the results of several experiments or trials

Note that meta-analyses, systematic reviews, or literature reviews may (like original research articles) have a "Methods" section, however the methods will indicate, for example, that the authors have searched particular databases on a topic and then analyzed the results or have evaluated the important research articles on a topic -- see examples below