![]() Why is a controlled vocabulary essential for searching? Related terms may also closely match a search topic, and should be considered as well. Therefore, any relevant narrower terms should be included in the list of index terms in your search. For example, an experimental population labeled “high school students” will be indexed with the term “High School Students”, not the broader and less specific term “Students”. Each record in APA's databases contains controlled vocabulary terms from the Thesaurus of Psychological Index Terms.ĪPA staff index records according to the source document's level of specificity. By standardizing the words or phrases used to represent concepts, you don't need to try and figure out all the ways different authors could refer to the same concept. Index terms are controlled vocabulary terms used in database records to make searching easier and more successful. The year indicates when the term was added to the Thesaurus.Posting notes are a feature specific to APA PsycNet ®. Posting notes tell how many times the term has been used in APA database records at the time the Thesaurus was published. ![]() Term hierarchies show the relationship to other terms.Historical notes provide valuable information on historical usage, text, or status changes, and the application of the term to historical records.Includes more than 10,100 standard and cross-referenced terms. ![]()
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