
These tips pertain to many library databases including the "Advanced Search" screen of Pirate Search.
| AND | OR | |
| How it works: | Search results contain both Term #1 and Term #2 | Search results contain either Term #1 or Term #2 (or both) |
| Effects on search results: | Narrows / Fewer results |
Broadens / More results |
| Examples with diagrams: |
Peas AND Carrots Results = the middle area overlapped by both circles |
Peas OR Carrots Results = the entire area |
Using an asterisk wildcard (*) at the end of a partial word will broaden search results by including multiple word endings.
When searching for a specific phrase (two or more words together), adding quotation marks around that phrase will typically narrow your search results.
For example:
Example topic: "The effects of media violence on children"
| Original Term | Synonym #1 | Synonym #2 | |||
| Media | OR | Television | OR | Movies | |
| AND | Violence | OR | Aggression | ||
| AND | Children | OR | Youth | OR | Adolescents |

This video from Lincoln Memorial University explains how Boolean Operators work!
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Park University Library 8700 NW River Park Drive, Box 61 - Parkville, MO - 64152 |
Phone: (816) 584-6285Toll-free: (800) 270-4347 |