The CRAAP Test -- Whether reading a book, article, or website, be an information skeptic--scrutinize, analyze, and evaluate your sources.
Currency:
• When was the information published or posted?
• Has the information been revised or updated?
• Is the information current or out-of-date for your topic?
Relevance:
• How well does this suit your topic or answer your questions?
• Who is the intended audience?
• Would you be comfortable using this source for a research paper?
Authority:
• Who is the author/publisher/source/sponsor?
• Are the author’s credentials or organizational affliations given?
• What are the author’s qualifications to write on the topic?
• Is there a way to contact the author?
Accuracy:
• Where does the information come from?
• Has the information been reviewed or refereed?
• Can you verify any of the information?
• Does the language or tone seem biased and free of emotion?
Purpose:
• Is the purpose to inform, sell, entertain, or persuade?
• Do the authors/sponsors make their intentions clear?
• Is the information fact? opinion? propaganda?
With GIS data, in addition to CRAAP Test evaluations, consider the following criteria.
Practical considerations
Responsible use of data