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Measuring Information Content of Freehand Sketches Using a Cognitive Chunk Visualization Protocol

[+] Author Affiliations
Chiradeep Sen, Quintcey Parrish, Omar Galil

Florida Institute of Technology, Melbourne, FL

Paper No. DETC2017-68077, pp. V007T06A035; 10 pages
  • ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 7: 29th International Conference on Design Theory and Methodology
  • Cleveland, Ohio, USA, August 6–9, 2017
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5821-9
  • Copyright © 2017 by ASME


This paper first presents a protocol study and its software realization for visualizing cognitive chunks as they form in real time during freehand sketching of design concepts, and then illustrates a method and metrics for measuring the information content of freehand sketches based on those chunks. A manual protocol for detecting cognitive chunks during sketching was reported earlier. In this research, the said protocol was automated into a software program and validated in a new protocol study, using new participants. The chunks detected by the program, by definitions in cognitive science literature, serve as entities or units of information conceived at once by the designer. The relations between these entities, esp. spatial relations, are then computed using a new method, which represents the sketch as an entity-relation (ER) model. An established protocol for measuring information of ER models is then applied to compute the information content of the sketches.

Copyright © 2017 by ASME



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