DEVELOPMENT OF A MONITORING SYSTEM FOR KEYBOARD USERS' PERFORMANCE
Resource
ERGONOMICS v.47 n.14 pp.1571-1581
Journal
ERGONOMICS
Journal Volume
v.47
Journal Issue
n.14
Pages
1571-1581
Date Issued
2004
Date
2004
Author(s)
WANG, JUNG-DER
LUH, JER-JUNN
Abstract
To precisely evaluate the typing performance of a VDT user, a program named KBlog was developed to record the typing activity under the Microsoft Windows operating system. This program is small and simply framed in order to avoid overloading of the operating system. Without interfering with the typing task, this program can record the time of every pressing and releasing movement of each keystroke at the millisecond level. The accuracy and reliability of KBlog was tested by comparing time intervals recorded by KBlog to time intervals of keyboard output electrical signals recorded by an oscilloscope. In the regression analysis on these two indicators, results of high correlation coefficients of almost 1.000 and intercepts within acceptable levels of around 1 ms indicated sufficient accuracy and reliability of this program. Further applications are discussed in this paper concerning both laboratory and field researches.
Subjects
ergonomics
keystrokes
typing activity
VDT
Type
journal article