Proceedings of the National Academy of Sciences of the United States of America

use knowledge of biological principles and the scientific method to ask and answer relevant questions about the human body
weigh and make health-related decisions based on an understanding of the value and limits of scientific knowledge and the scientific method

A primary research article is an article in which authors conduct experiments and report their original findings, while a secondary research article reports or summarizes information presented from another source (for information of primary and secondary sources please go to Online Guide to Writing and Research).

For this assignment we will use a secondary article to trace the scientific method in a primary article.

Before starting this assignment, you might want to revisit the Scientific Method Tutorial in the Science Learning Center under the Content area.

Summary of Instructions:

Select a topic from the article options below. Next, click on the associated link to read the Science Daily article (the peer-reviewed scholarly primary article is also provided. Use this article as needed for additional details). Finally, write a paper that addresses the three questions outlined below.

Scientific Journal Article options (choose one):

Goji berry intake increases macular pigment optical density in healthy adults: A randomized pilot trial.
ScienceDaily article:

University of California – Davis. (2022, January 13). Dried goji berries may provide protection against age-related vision loss. ScienceDaily. https://www.sciencedaily.com/releases/2022/01/220113151356 .htm

Scientific Journal Article Reference:

Li, X., Holt, R. R., Keen, C. L., Morse, L. S., Yiu, G.,

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