Research area categorization is the process of grouping research topics or fields into distinct categories based on their similarities, themes, or subject matter. This categorization helps researchers and scholars navigate the vast landscape of academic research and identify relevant studies within their area of interest. There are different ways to categorize research areas, including by discipline (e.g., psychology, biology, physics), by methodology (e.g., qualitative, quantitative, mixed methods), by theoretical framework (e.g., feminist theory, social constructivism), by problem domain (e.g., health, education, technology), or by research level (e.g., basic research, applied research, translational research). Categorizing research areas can help researchers identify research gaps, collaborate with other scholars working in similar areas, and stay informed about the latest developments in their field. It also helps in funding allocation, resource management, and policy-making decisions within the academic and scientific communities.