Design representations in user-centered design serve intentions for directing design process and communication functions for enlisting interdisciplinary participation. To disentangle these two factors, a vocabulary for identifying communication functions in design is proposed. This vocabulary, drawn from a selective review of empirical studies of design activity in architecture and engineering, is then applied to three design cases from user-centered design. This analysis shows how representational use is subject to adaptive pressure from the communication demands in interdisciplinary teams. The consequences of this adaptive pressure for understanding the nature of design are discussed. Keywords Interdisciplinary design, design representations, design process, design informatics, design information systems, communication
David G. Hendry