The Thesaurus of Psychological Index Terms was developed and is maintained by the American Psychological Association (APA).
The Thesaurus of Psychological Index Terms is a controlled vocabulary used for indexing, cataloging, and searching for psychological information and documents. It enables retrieval systems, such as PsycINFO, to provide subject searching of data.
The thesaurus contains about 8,000 terms, including preferred and entry terms. Many terms include definitions and historical usage notes.
The thesaurus includes nine term clusters, which group terms together by conceptual similarity. The nine clusters are:
The nine clusters represent terms frequently used in psychological research and are not meant to cover all subject areas of psychology.
Indexers, subject catalogers, online searchers, and in retrieval systems use the Thesaurus of Psychological Index Terms.
The Thesaurus of Psychological Index Terms is updated regularly.
Metathesaurus Update Frequency
The Thesaurus of Psychological Index Terms was last updated in the Metathesaurus in 2005.