

This guide explains the use of Boolean operators in journal indexing databases to improve article searches. It outlines how these operators, specifically AND, OR, and NOT, can help narrow or broaden search results based on user needs. The document details the functionality of these operators, indicating that they must often be capitalized to be recognized by the database. Additionally, it describes the use of round brackets for complex searches and double quotes for exact phrases. The guide provides examples of searches performed on PubMed regarding HIV transmission, demonstrating the impact of different Boolean operators on the number of articles returned. It emphasizes that Boolean operators can save researchers time by refining searches to yield only relevant articles. The document also suggests checking the help menu of specific databases for further tips on utilizing Boolean operators effectively.