Skip to main content


Information Literacy Tutorial

Information Literacy Tutorial

Boolean Operators

Boolean Operators

Use Boolean operators (AND, OR, NOT) to combine keywords in a search.

1.  Use AND to narrow a search. Both search terms must be present in all references retrieved.
 
      Example:  global warming AND forests    

                  


2.  Use OR to expand a search. Your search will retrieve records with EITHER of the terms.  OR is most
     often used to combine synonyms or like terms.

      Example:  children OR adolescents


3.  Use
NOT
to exclude a term. Records with the first term will be retrieved, but any records with the
     second term will be eliminated.

     Example: 
eating disorders NOT bulimia

<< < Continue >