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Start with your research question and break it into 2 or 3 concepts. These become your keywords or phrases which form the basis for your search. Keywords are joined by the connectors AND and OR to narrow or broaden your search.
Creating a Search Strategy
The worksheet below discusses how to create a search using keywords and boolean operators (AND / OR).
Understanding Boolean Search
The link below is a handout explaining Boolean logic.
Boolean Logic is a fancy term for a simple concept. Boolean operators are the connecting terms AND and OR used when constructing searches in the databases. It's called Boolean because it was named after a famous mathematician, George Boole, who developed it.