Abstract
Abstract. This paper uses Shannon’s entropy of information to measure linkographs of twelve design sessions which involved six architects in two separate design processes. In one they were not allowed to sketch (blindfolded condition), and in the other they were allowed to sketch. A previous study showed that the architects’ overall cognitive activity in the blindfolded condition dropped below their activity in the sketching condition, after 20 approximately minutes during the timeline of the design sessions. This study uses entropy measures as a quantitative tool to study this phenomenon. Assuming that moves in a linkograph are the manifestation of ideas and entropy indicates the idea development potential, we tested whether entropy of idea links would also drop after 20 minutes during the blindfolded sessions. The results show that the visuo-spatial working memory load does not have negative effects on idea development.
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References
Akaike, H: 1973, Information theory as an extension of the maximum likelihood principle, in B Petrov and C Csaki, Akademiai Kiado (eds), Second International Symposium on Information Theory, Budapest, pp. 267–281.
Athavankar, UA: 1997, Mental imagery as a design tool, Cybernetics and Systems 28: 25–47.
Baddeley, AD: 1986, Working Memory, Oxford, Clarendon Press.
Baddeley, AD, Emsile, H, Kolodny, J and Duncan, J: 1998, Random generation and executive control of working memory, Quarterly Journal of Experimental Psychology 51A: 819–852.
Ballard, DH, Hayhoe, MM, and Pelz, JB: 1995, Memory representations in natural tasks, Journal of Cognitive Neuroscience 7: 66–80.
Bilda, Z, Gero, JS and Purcell AT: 2006, To sketch or not to sketch: That is the question, Design Studies (to appear).
Bilda, Z and Gero, JS: 2005, Does sketching off-load visuo-spatial working memory? in Gero, JS and Bonnardel, N (eds), Studying Designers’05, Key Centre of Design Computing and Cognition, University of Sydney, pp. 145–159.
Franklin, T: 2003, Falling Water Rising: Frank Lloyd Wright, E.J. Kaufmann, and America’s Most Extraordinary House, New York, Knopf.
Goldschmidt, G: 1990, Linkography: assessing design productivity, Cyberbetics and System ′90, R Trappl. World Scientific, Singapore, pp. 291–298.
Goldschmidt, G: 1992, Criteria for design evaluation: a process-oriented paradigm, in YE Kalay (ed), Evaluating and Predicting Design Performance, New York, John Wiley & Son, Inc. pp. 67–79.
Goldschmidt, G: 1995, The designer as a team of one, Design Issue 16(2): 189–209.
Kan, WT and Gero, JS: 2005, Can entropy indicate the richness of idea generation in team designing? in A Bhatt (ed), CAADRIA05 Vol 1, TVB, New Delhi, India, pp. 451–457.
Kan, JW and Gero, JS: 2006, Acquiring information from linkography in protocol studies of designing, Design Studies (submitted).
Logie, RH: 1995, Visuo-Spatial Working Memory, Hillsdale, Lawrence Erlbaum Associates, Publishers.
Miller, GA: 1956, The magical number seven, plus or minus two: Some limits on our capacity for processing information, Psychology Review 63: 81–97.
Pearson, DG Logie, RH and Gilhooly, KJ: 1999, Verbal representations and spatial manipulations during mental synthesis, European Journal of Cognitive Psychology 11(3): 295–314.
Petre, M and AF Blackwell: 1999, Mental imagery in program design and visual programming, International Journal of Human-Computer Studies 51(1): 7–30.
Phillips, WA and Christie, DFM: 1997, Components of visual memory, Quarterly Journal of Experimental Psychology 29: 117–133.
Schon, D A and Wiggins G: 1992, Kinds of seeing and their functions in designing, Design Studies 13(2): 135–156.
Shannon, CE: 1948, A mathematical theory of communication, The Bell System Technical Journal 27: 397–423.
Suwa, M, Purcell, T and Gero, JS: 1998, Macroscopic analysis of design processes based on a scheme for coding designers’ cognitive actions, Design Studies 19(4): 455–483.
Walker, P, Hitch, G, and Duroe A: 1993, The effect of visual similarity on short-term memory for spatial location: Implications for the capacity of visual short term memory, Acta Psychologica 83: 203–224.
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KAN, J.W., BILDA, Z., GERO, J.S. (2006). COMPARING ENTROPY MEASURES OF IDEA LINKS IN DESIGN PROTOCOLS. In: GERO, J.S. (eds) Design Computing and Cognition ’06. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-5131-9_14
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DOI: https://doi.org/10.1007/978-1-4020-5131-9_14
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