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ReferencesNavigation arrowAuthorsNavigation arrowKurt M. Joseph
Jun 19

“ ... there are no simple 'right' answers for most web design questions (at least not for the important ones). What works is good, integrated design that fills a need--carefully thought out, well executed, and tested. ”

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Kurt M. Joseph

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Publications by Kurt M. Joseph (bibliography)

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1992
 
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Uhlarik, John and Joseph, Kurt M. (1992): Spatial and Temporal (RAPCOM) Visual Display Formats and the Proximity Compatibility Principle. In: Proceedings of the Human Factors Society 36th Annual Meeting 1992. pp. 1383-1387.

“RAPCOM (rapid communication) displays involve temporal presentation of information in the same spatial location and have been suggested to have useful potential for human-computer interactions involving high information transfer rates (cf., Matin and Boff, 1988). An experiment was conducted to evaluate the relative effectiveness of various spatial and temporal display formats for presenting information pertaining to the likelihood of aircraft stall using the simulated dynamics of a light aircraft. Specific spatial and temporal characteristics of the display formats were based on the proximity compatibility principle (PCP) which attempts to integrate findings regarding the benefits and limitations of displaying multiple sources of information in similar or "proximal" ways (Wickens and Andre, 1990; Carswell and Wickens, 1990). The effectiveness of these display formats were compared for judgments which required the integration of three display parameters (airspeed, bank, and flap angle) to determine stall probability with those requiring focused attention necessitating the recall of the specific value of one of the parameters. For the complex monitoring task used in this experiment, temporal display formats were generally associated with the most accurate performance. Furthermore, the overall pattern of results was not consistent with design guidelines suggested by the PCP, and suggest difficulties when attempting to define "proximity" in terms of physical metrics based on spatial or temporal parameters.”

© All rights reserved Uhlarik and Joseph and/or Human Factors Society

 
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Joseph, Kurt M. and Uhlarik, John (1992): The Effects of Legibility and Display Size on Performance for RAPCOM and Spatial Display Formats. In: Proceedings of the Human Factors Society 36th Annual Meeting 1992. pp. 1388-1392.

“Information formatting in terms of optimal spatial and temporal parameters has become an important issue with the advent of computer automated displays. One temporal format involving sequential presentation of information, termed RAPCOM (for rapid communication; cf., Matin and Boff, 1988), has the potential to increase performance in situations involving high information transfer rates. The present study investigated the relative contributions of two spatial parameters comparing RAPCOM with more conventional spatial formats involving simultaneous presentation of information. The parameters of character size and spatial separation were examined because they are important determinants of display legibility and visual search, respectively. Performance was assessed in terms of speed and accuracy for a task that required observers to recall integers presented in either an analog or digital format. The findings showed that accuracy performance decreased as the information became spatially separated. Specifically, RAPCOM formats produced the best performance and the large spatial separation the worst performance. A different pattern of results was obtained for character size, depending on whether the display indicators were analog or digital. For analog dials, character size had no systematic effect on performance. However, for digital dials, character size produced an interaction in that the fastest and most accurate performance of all conditions was associated with the spatial format consisting of large characters and small spatial separation. In other words, under conditions associated with high legibility and relatively low visual search, more traditional spatial formats exceeded performance levels associated with the RAPCOM format. These findings are relevant for designers when trying to evaluate the relative merits inherent in spatial versus temporal display formats.”

© All rights reserved Joseph and Uhlarik and/or Human Factors Society

 
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26 Jun 2007: Modified
26 Jun 2007: Added

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Jun 19

“ ... there are no simple 'right' answers for most web design questions (at least not for the important ones). What works is good, integrated design that fills a need--carefully thought out, well executed, and tested. ”

-- Steve Krug, Don't Make Me Think, p. 136

 
 

Featured chapter

Read the fascinating history of Wearable Computing, told by its father, Steve Mann

Read Steve's chapter !

 
 

Latest books

The Social Design of Technical Systems: Building technologies for communities
by Brian Whitworth and Adnan Ahmad

 
Start reading

The Encyclopedia of Human-Computer Interaction, 2nd Ed.
by Mads Soegaard and Rikke Friis Dam

 
Start reading
 
 

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