A book or electronic resource that lists words in groups of synonyms and related terms.
A controlled vocabulary thesaurus organizes a database into pre-determined subject terms that everything about that subject falls under.
By using a controlled vocabulary thesaurus you do not have to guess among a host of terms that are similar in meaning to find relevant articles.
The ERIC Thesaurus is an example of a controlled vocabulary thesaurus.
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For more information about the ERIC Thesaurus and how to use it, please visit the "ERIC Thesaurus" tab