Information Fluency

Identify Primary Concepts

Primary concepts or keyterms can be identified using the PICO formula from Step 1. Each of the PICO elements can form a primary concept. If your PICO does not have a Comparison or Outcome (the outcome is broad or vague) element, it is okay to leave these concepts. 

Example:

P: adolescents with depression

I: Prozac

C: Zoloft

O: n/a

Gather Synonymes

For each primary concept identified, make a list of other terms with the same or related meaning (synonyms). It is important to gather synonyms, because

  • Terms have different spellings, plural forms, acronyms, full form of acronyms 

  • Concepts are described inconsistently across time, geographies or even among researchers

  • Terms have same/close meaning, disciplinary jargon

  • Umbrella terms vs specific names

These terms will form the textwords of your search strategy. 

Example:

Concepts Synonyms
adolescents teen, teens, teenager, adolescence, youth
depression depressive, depressions
Prozac fluoxetine, fluoxetin, sarafem,
Zoloft sertraline, altruline, lustral, sealdin, gladem

Tips for finding synonyms:

  • use a thesaurus
  • think of specific examples or types
  • use background information to help brainstorm (e.g. encyclopedia, Wikipedia)
  • mine relevant articles for keywords and subject headings 
  • use "Used For" terms in MeSH (see Step 3)