A Boolean Search uses a combination of keywords and three basic Boolean operators to refine your search.
The three basic Boolean operators are: AND, NOT, OR.
(These are also visible in ADVANCED SEARCH in the drop-down menu options.)
Do take note Boolean operators (AND, NOT, OR) must be keyed in uppercase letters for them to work – otherwise, the search engine removes them, and performs a simple search that includes all the search phrases.
Let’s say we’re interested in searching for “students”, “stress”, and “sleep”.
- Searching for “students AND stress” would yield results containing the two keywords;
- “students OR stress” would result in one or the other (i.e. some results may not have “students”; some results may not have “stress”);
- “students NOT stress” would result in searches pertaining to “student” that do not include “stress”.
If you’re looking to work on a paper pertaining to the discussion of “nature vs nurture” in “intelligence”, and would like to exclude results pertaining to artificial intelligence, you can key in: “intelligence NOT artificial”. Or more precisely, “nature vs nurture AND intelligence NOT artificial”.