6. PubMed has a term mapping feature that handles the grammatical variations for most terms fairly well. Thus, you often retrieve more articles using this built in feature, rather than trying to build the search using truncation. However, adding synonyms may be beneficial.

Let’s try the search again and add some synonyms. After clearing the

“Query box” type the following in the search box: early AND (detection OR identification) AND hearing AND (loss OR impairment) AND language and select “Search.” This search returned over 500 results.