Research area filters are tools used in academic databases and search engines to help refine search results by narrowing them down to specific disciplines, subject areas, or fields of study. By applying research area filters, users can focus their search on particular topics or areas of interest, making it easier to find relevant and specific information within a vast array of literature. These filters typically allow users to select from predefined categories or keywords related to different research areas, enabling them to customize their search results based on their specific needs and preferences.