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ReferencesNavigation arrowAuthorsNavigation arrowJanet S. Blackwell
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

 
 

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Janet S. Blackwell

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Publications by Janet S. Blackwell (bibliography)

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1991
 
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Blackwell, Janet S. and Cuomo, Donna L. (1991): Evaluation of a Proposed Space and Missile Warning Symbology Standard for Graphical Displays. In: Proceedings of the Human Factors Society 35th Annual Meeting 1991. pp. 102-106.

“A discriminability evaluation was performed on a proposed Space and Missile Warning symbol set. Our analysis focused on the discriminability of the symbols and the application of the information coding techniques. Inconsistent or inappropriate use of coding techniques can affect a user's interpretation of the symbol's intended meaning. Potential problems included the similarity individual symbols, use of alphanumeric markers and partially shaded symbols, and the lack of guidance on the minimum size of the symbols. After a lengthy review of previous research, we felt the literature could not provide adequate solutions. A two-part discriminability study was conducted to test the overall effects of the information coding techniques on discriminability, to identify individual symbols with low discriminability, and to determine an appropriate minimum size for these symbols. Search time was used as a measure of symbol discriminability. Size, shape, markers, and shading had significant effects on search time and errors. The experiments confirmed the suspected discriminability problems and modifications were made to the existing symbol set to create three new alternative symbol sets. Testing performed on these new symbol sets revealed that many of the problem areas from the original symbol set had been improved. Design guidelines and a new modified symbol set were proposed for review by the operational community.”

© All rights reserved Blackwell and Cuomo and/or Human Factors Society

 
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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
 
 

Help us help you!

 
 
 
 
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