IS DISPLAY CONTROL GAIN A USEFUL METRIC FOR OPTIMIZING AN INTERFACE

被引:24
作者
ARNAUT, LY
GREENSTEIN, JS
机构
[1] CLEMSON UNIV,DEPT IND ENGN,CLEMSON,SC 29634
[2] NSI TECHNOL SERV INC,CORVALLIS,OR
[3] OREGON STATE UNIV,DEPT PSYCHOL,CORVALLIS,OR 97331
关键词
D O I
10.1177/001872089003200604
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
Two studies were conducted to determine the adequacy of display/control gain as a metric for characterizing a control-display interface consisting of a CRT display and a separate input device. The first study examined the effect of independent changes in the control input and the display output on cursor positioning performance with two input devices: a touch tablet and a trackball. The second study separated the effects of control amplitude, display amplitude, and display target width. Results indicate that display/control gain is not an adequate specification for performance. A combination of gain and Fitts' index of difficulty may be a useful predictor.
引用
收藏
页码:651 / 663
页数:13
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