The impact of computer aided architectural design programs on conceptual design in an educational context

• Four computer aided design protocols were collected using think-aloud methods.
• The protocols varied in the number, duration and transition rate of segments.
• Students using CAAD will have relatively longer shifts of intention.
• Participants spent less time analysing the problem and more on proposing a solution.
• Restraining the design medium does not necessarily lead to particular design strategies.

Little research has been undertaken concerning the manner in which students use computer aided architectural design (CAAD) programs for conceptual design. The research aim was to explore the potential impact of CAAD programs as conceptual design tools within architectural design methodologies. Therefore, the study aimed to understand the effect of CAAD on self-reflection using a think-aloud method. The findings demonstrate that participants used CAAD representations for concept development, information visualisation and presentation of design strategies. Results from the detailed analysis of design process are enlightening, particularly in terms of the cyclical nature of conceptual design. Furthermore, the use of a micro-detail protocol study within this context suggests an appropriate methodology for application in further study of the architectural design process.