To consider an '-ological' (ontological, epistemological and methodological) triad in the context of construction management (CM) research. To explore the triad in terms of ontological/ epistemological viewpoints, paradigmatic approaches to CM research and ultimately, CM methodological decisions.-Approach Derivation of critical narrative and graphical models employing literature synthesis : combined with experiential, methodological views of the authors.-Findings Conceptions of ontology, epistemology and methodology [the 'ological-triad'] : demonstrate high variability-resultantly, their use in CM research is equally inconsistent, sometimes questionable, and in the extreme, sometimes overlooked. Accordingly, this study concludes that greater recognition of the 'ological-triad' is called for in CM research, especially at the design stage. A framework for doing this is proffered.-Originality: Combined study of the 'ologies' within CM research uniquely consolidates previous disparate knowledge into a single, cogent, subject-specific discourse that inter-alia, both informs and illuminates CM research challenges. It also encourages critical debate on the issues highlighted.