research plan
A written plan for an inquiry: your question, sub-questions, the kinds of sources you need, where you will look and when each step is due.
sub-question
A smaller, answerable question that helps you answer your main research question.
Boolean operators
The search words AND, OR and NOT, which combine keywords to narrow or widen a search.
nesting
Putting synonyms in brackets so a database reads them as one idea: (teen∗ OR adolescen∗) AND sleep.
truncation
Using a symbol, usually an asterisk (∗), to search every ending of a word stem: adolescen∗ finds adolescent, adolescents, adolescence.
database
A searchable collection of published articles, books, reports or data, often paid for by your library.
peer-reviewed
Checked by other experts in the field before publication; typical of scholarly journal articles.
citation chaining
Finding more sources by following a good source's reference list (backward) or the newer works that cite it (forward).