The KJ Method as a Cognitive Bridge in Ergo-Aesthetic Design: A Conceptual Review of Visual Collaboration and Decision-Making Synthesis

Abstract

The post-pandemic design landscape has demanded new methods of collective sense-making and decision synthesis as physical collaboration has given way to digital co-creation. The KJ Method, originally devised by Jiro Kawakita, has re-emerged as a relevant tool for navigating design complexity, particularly within the domains of ergonomics, aesthetic cognition, and visual behaviour analysis. This review reinterprets the KJ Method through the lens of ergo-aesthetic integration the convergence of human factors, visual perception, and creative synthesis in product design. Drawing upon literature from design research, behavioural science, and cognitive ergonomics, the paper elucidates how the KJ Method facilitates visual clustering, tacit knowledge externalisation, and transdisciplinary dialogue in design teams. The method’s visual logic enables designers to transition from fragmented insights to structured conceptual frameworks, aligning with post-pandemic demands for remote yet embodied collaboration. Through thematic synthesis, the review explores how the KJ Method functions as both a process of seeing together and a system of meaning-making that enhances ergonomic decision quality and aesthetic coherence. A new conceptual framework the KJ-Ergo-Aesthetic Integration Model is proposed to map the flow between visual cognition, ergonomic perception, and collaborative creativity. The paper concludes by identifying methodological gaps, advocating for digital augmentation of the KJ Method, and situating it within the evolving discourse of cognitive design research.