Driving Public Service Reform through Demonstration Design Handbooks

This study addresses the common challenge in public service design: the difficulty of effectively scaling design innovations. It introduces the Demonstration Design Handbook as a strategic interface that translates design thinking into institutional practice. Drawing on practical implementations across transportation, healthcare, and housing, the research develops a systemized, institution ally compatible design process, validated through multiple cross-case applications. Grounded in the Double Diamond model and adopting a Research through Design approach, the study integrates participatory strategies to formulate a handbook format that captures problem exploration, design reasoning, strategic context, and institutional application. Findings indicate that the Demonstration Design Handbook enhances the comprehensibility and implement ability of design outcomes while serving as a critical knowledge tool for cross-agency learning and internal design capacity building, thereby supporting systemic reform and innovation diffusion in public service fields.