Journal of Computational Design
Yazarlar: Erdal KONDAKCI, Hakan TONG
Konular:Mimarlık
Anahtar Kelimeler:Design cognition,Design expertise,Sketching,Protocol analysis,Linkography
Özet: Within the scope of this paper, in order to observe the effect of experience and sketching on design productivity in architectural design, the early design phase is examined where architects generate ideas with creative visual thinking by sketching to make the main design decisions. In this context, two different experience groups were identified to observe the effect of experience in the early phases of architectural design, and design studies were carried out with two participants from each of these experience groups. The first group consists of senior architecture students who are considered as novice, while the second group consists of people with 8-10 years of professional architectural experience who are considered as experienced. Participants were asked to generate a design proposal to the same architectural design problem through sketching. After design problem and participants were determined, protocol studies were carried out with participants who are using think-aloud method while sketching to produce a design proposal to the given problem, and their design processes were recorded by camera. Firstly, the verbal expressions obtained from video recordings of each participant’s design process were transcribed and segmented as design moves, then coded according to sketching action. While parsing design moves, the designer’s verbal expressions and sketches are evaluated together and focused on design decisions that change the course of the design process by little thought changes. In this way, micro-level design decisions that lead to spatial, functional, and formal changes in the design process have been identified as design moves. Linkographs were constructed by detemining the links between design moves. The link between two design moves is determined by the content of the moves. All design moves are examined one by one by querying whether each design move is contextually linked to previous moves. Design productivity of each participant were determined through individual design process analysis by using linkographs. Finally, comparative analyses of design productivity, within each experience group and between groups, was included. As a result of protocol studies and linkograph analyses, important findings have been reached revealing the effect of experience and sketching on design productivity in the early design phase. Accordingly, it has been seen that besides the general architectural experience that participants have, the experience on the specific problem area (housing design) is significant for the emergence of design productivity. Having the problem-specific experience affects design productivity positively in both senior architecture students’ group and experienced architects’ group. Another important result is that the experience of the participants and their rate of sketching in the design processes are parallel. In this context, it has been observed that the participants having more experience have a higher rate of sketching by using sketch medium more efficiently, and they generate a great majority of their design ideas through sketching. It has been observed that the high rate of sketching associated with experience affects positively to link index, critical move rate and linking pattern rates which are used to determine design productivity in linkograph analyses, and consequently contributes to occur a productive design process.