Despite the apparent advantages of and recent advances in the use of visualization in engineering design and optimization, we have found little evidence in the engineering literature that assesses the impact of fast, graphical design interfaces on the efficiency and effectiveness of engineering design decisions or the design optimization process. In this paper we discuss two examples—the design of an I-beam and the design of a desk lamp—for which we have developed graphical and text-based design interfaces to assess the impact of having fast graphical feedback on design efficiency and effectiveness. Design efficiency is measured by recording the completion time for each design task, and design effectiveness is measured by calculating the error between each submitted design and the known optimal design. The impact of graphical feedback is examined by comparing user performance on the graphical and text-based design interfaces while the importance of rapid feedback is investigated by comparing user performance when response delays are introduced within each design interface. Experimental results indicate that users of graphical design interfaces perform better (i.e., have lower error and faster completion time) on average than those using text-based design interfaces, but these differences are not statistically significant. Likewise, we found that a response delay of 0.5 seconds increases error and task completion time, on average, but these increases are not always statistically significant. Trials using longer delays of 1.5 seconds did yield significant increases in task completion time. We also found that the perceived difficulty of the design task and using the graphical interface controls were inversely correlated with design effectiveness—designers who rated the task more difficult to solve or the graphical interface more difficult to use actually performed better than those who rated them easy. Finally, a significant “playing” effect was observed in our experiments: those who played video games more frequently or rated the slider bars and zoom controls easy to use took more time to complete the design tasks.
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June 2003
Technical Papers
Assessing the Impact of Graphical Design Interfaces on Design Efficiency and Effectiveness
Christopher Ligetti, Graduate Research Assistant,,
Christopher Ligetti, Graduate Research Assistant,
Department of Industrial & Manufacturing Engineering, The Pennsylvania State University, University Park, PA 16802
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Timothy W. Simpson, Member ASME, Assistant Professor,,
Timothy W. Simpson, Member ASME, Assistant Professor,
Departments of Mechanical & Nuclear Engineering and Industrial & Manufacturing Engineering, The Pennsylvania State University, University Park, PA 16802
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Mary Frecker, Member ASME, Assistant Professor,,
Mary Frecker, Member ASME, Assistant Professor,
Department of Mechanical & Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802
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Russell R. Barton, Professor,,
Russell R. Barton, Professor,
Management Science and Information Systems, The Pennsylvania State University, University Park, PA 16802
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Gary Stump, Graduate Research Assistant,
Gary Stump, Graduate Research Assistant,
Department of Mechanical & Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802
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Christopher Ligetti, Graduate Research Assistant,
Department of Industrial & Manufacturing Engineering, The Pennsylvania State University, University Park, PA 16802
Timothy W. Simpson, Member ASME, Assistant Professor,
Departments of Mechanical & Nuclear Engineering and Industrial & Manufacturing Engineering, The Pennsylvania State University, University Park, PA 16802
Mary Frecker, Member ASME, Assistant Professor,
Department of Mechanical & Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802
Russell R. Barton, Professor,
Management Science and Information Systems, The Pennsylvania State University, University Park, PA 16802
Gary Stump, Graduate Research Assistant,
Department of Mechanical & Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802
Contributed by the Engineering Simulation and Visualization Committee for publication in the JOURNAL OF COMPUTING AND INFORMATION SCIENCE IN ENGINEERING; Manuscript received Sept. 2002; Revised Apr. 2003. Associate Editor: D. Rosen.
J. Comput. Inf. Sci. Eng. Jun 2003, 3(2): 144-154 (11 pages)
Published Online: June 30, 2003
Article history
Received:
September 1, 2002
Revised:
April 1, 2003
Online:
June 30, 2003
Citation
Ligetti, C., Simpson, T. W., Frecker, M., Barton, R. R., and Stump, G. (June 30, 2003). "Assessing the Impact of Graphical Design Interfaces on Design Efficiency and Effectiveness ." ASME. J. Comput. Inf. Sci. Eng. June 2003; 3(2): 144–154. https://doi.org/10.1115/1.1583757
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