As contemporary cultural institutions transition from traditional repositories of static preservation to participatory, post-digital ecosystems, they face the profound challenge of engaging audiences within an increasingly fragmented visual culture. Guided by the 2022 ICOM definition and the acceleration of hybrid engagement strategies, this dissertation investigates the evolving role of museum communication across physical and digital layers. Moving beyond the historical misconception of graphic design as a secondary, decorative, or post-curatorial layer of information delivery, this research posits that graphic design operates as a primary structural force that actively choreographs visitor attention, spatial navigation, and cognitive processing. Drawing upon New Museology, constructivist learning theories, Stephen Bitgood’s attention-value model, and the principles of empathetic design, this study examines how institutional authority can be decentralized to foster democratic, polyphonic spaces of social discourse. These concepts are analyzed through a triad of core themes: participation, contextualization, and experience.

The theoretical inquiry is further tested and evaluated through Zarbān (the author’s Masters final year project), a fictional post-digital creative campaign commissioned for the Victoria and Albert Museum (V&A) targeting Generation Z. By focusing on Iranians as a topic and addressing the critical systemic underrepresentation of contemporary Iranian creatives, Zarbān utilizes an adaptive graphic language and a "phygital" architecture and suggests new ideas for how graphic design can change museum/ exhibit perception in this rapidly evolving 21st century. Through this synthesis of theory and practice, the dissertation demonstrates how cognitive design can lower the friction of engagement, balance interpretive autonomy with clear visual scaffolding, and transition museum communication from a didactic "lectern" to an open, responsive "platform." Ultimately, this research addresses a fundamental question: