There are four kinds of searching options. Good searchers are aware of each one and when and how to use them interchangeably or based on the database requirements.
1. Simple word strings. I call this building-block searching.
2. Boolean searching. See a more detailed description on this page.
3. Natural language to subject headings and sub-headings. You must use subject headings or at least be aware of them when using PubMed and Medline.
4. Citation Pearl Growing. Finding a good article or source with a current and useful bibliography may lead you to the kinds of articles you need. Note the importance of finding the primary authors who are doing research in your field. Pay special attention to locating a literature review on your topic Literature review articles cover the current literature in one central location.
Accomplished and skilled researchers are able to determine basic aspects of database organization using multiple strategies. Good researchers understand the usefulness of bakground information, bibliographies and are conversant with the vocabulary of the discipline. Good researchers are familiar with a wide variety of tools and use them wisely, not dependent on one specific source.
DOI=digital object identifier
It is a permanent identifier that will take you straight to a document no matter where it’s located on the Internet. When available they are usually part of the citation or on the main or first page of an article.
Before you begin looking for a DOI for your article you should know:
1. Not all articles have a DOI number. While the majority of articles published today do have DOI numbers, most older articles -more than two years old-- do not. Some publishers are adding DOIs to older articles.
2.. While some library databases provide the DOI number as part of the article's citation, this is not consistent across databases.
When you have a DOI number you can use a DOI locator to link you to the article (sometimes in full text or sometimes just the citation.)
3. Here are some basic guidelines from APA Publication Manual (6th edition) for citing electronic sources.
1. Start with the words that are familiar to you. If your research topic is: What does the recent literature suggest regarding the correlation between concussion/brain damage in (American) football (not soccer) and cognition your possible search terms might be:
Each of these terms is entered into one of the search boxes on the database search screen.
But this search may not and probably will not yield the best results. There are two things you can do to make your search more precise: determine additional synonyms or related terms. Often these are more specific and use the language of the profession. You can add these additional terms and join them in the same subject line.
|Concussion OR "brain concussion" OR "second impact syndrome" OR "brain damage" OR "brain trauma" OR "intracranial injury"|
|AND||Cognition OR Learning|
You should know that there are three Boolean operators:
AND--each of the words or terms must be in the record, AND reduces the number of results.
OR--increases the size of the set you are searching.
NOT--excludes a particular word or concept from the search.
--Information is from a trustworthy source.
--The author's credentials are available.
--The author or organization is a known or respected authority.
--The information is up to date, truthful, with sufficient detail.
--The audience and purpose reflects attempt to be complete and accurate.
--The author attempts fair, balanced, objective, reasoned,
--There is an absence of fallacy
--There is no apparent slant or biased tone.
--This item lists sources used and is well documented.
--Contact information is supplied,
--Information can be substantiated or corroborated; claims are supported with evidence.
CARS criteria developed by Robert Harris, Vanguard University http://www.virtualsalt.com/evalu8it.htm