Developing the research topic / question
Brainstorming keywords
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Try moving from general to more scholarly:
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Sleeping problems to insomnia
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Mood issues to depression
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Try moving from broad to more specific
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Sleep supplements to melatonin
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Start out with 2-4 keywords and review your hits
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Ex. insomnia, depression, melatonin
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Look at other keywords/subjects listed with your results
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Ex. circadian rhythms
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Resources to help brainstorm keywords
Want help brainstorming keywords? Try:
How to Generate Keywords
http://www.lib.utexas.edu/keywords/index.php
Source: University of Texas at Austin (CC-BY-NC 3.0)
OR
Search Strategy Generator
http://www.lib.umich.edu/search-generator
Source: University of Michigan Library