LITERATURE REVIEW TYPES IN ACADEMIC RESEARCH

Literature reviews constitute foundational components of scholarly inquiry, yet persistent taxonomic ambiguity regarding their typology, terminology, and methodological specifications impedes rigorous research design and compromises the epistemological coherence of knowledge synthesis efforts. This study systematically identifies, defines, categorises, and critically compares twenty major literature review types employed in contemporary academic research, developing a comprehensive decision framework to guide methodologically sound review selection and implementation. Employing a qualitative comparative analysis combined with systematic thematic synthesis of methodological literature, we analysed peer-reviewed articles, methodological guidelines from established repositories, and taxonomy frameworks. The analysis yielded four principal contributions. First, definitional clarification established precise, operationalizable definitions for twenty review types, including systematic, meta-analysis, scoping, mapping, narrative, critical, rapid, integrative, umbrella, qualitative evidence synthesis, realist, mixed methods, state-of-the-art, systematised, bibliometric, historical, conceptual, theoretical, methodological, and living reviews. Second, taxonomic organisation developed a hierarchical classification system structured around four epistemological orientations: positivist-aggregative, interpretivist-constructivist, critical-transformative, and pragmatic-mixed. Third, comparative analysis examined each review type across two dimensions: core selection drivers (research purpose, question characteristics, evidence type, resource constraints, epistemological stance, common frameworks, intended audience) and operational design choices (search comprehensiveness, appraisal requirements, synthesis approach, reporting standards, typical outcomes). Fourth, an evidence-based decision framework comprising six sequential decision points was developed to guide researchers from research context to appropriate methodology selection. Findings demonstrate that literature review types represent more than procedural variations; they embody distinct epistemological commitments and serve fundamentally different knowledge-building functions. Quality criteria must therefore be orientation-specific rather than universal. The proposed taxonomy reveals legitimate methodological diversity that cannot be reduced to hierarchical quality rankings. This framework provides researchers, educators, journal editors, and peer reviewers with systematic guidance for review type selection based on research purpose, epistemological stance, resource constraints, and disciplinary conventions, ultimately strengthening evidence synthesis quality and methodological transparency across academic disciplines. Article visualizations: