Calendar

May 22

Knowing (by) Designing 2013

May 27

13th Intl. Conf. on New Interfaces for Musical Expression

May 28

Graphics Interface 2013

May 20

“ The moment clients realize that revisions are not an all-you-can-eat buffet, suddenly they realize they are not hungry. ”

-- Lester Beall

Share this quote on...
Get more quotes via RSS or by joining our Usability Quote of the Day Facebook Page

Featured chapter

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

Read Steve's chapter !

Help us help you!

Spread the word:
Donate
Other ways to help

Edward F. Krieg

Add description

← Button will not work: You have not enabled Javascript. How do I enable it?

Rename / change spelling

Add publication

← Button will not work: You have not enabled Javascript. How do I enable it?

Publications by Edward F. Krieg (bibliography)

1992

Edit | Del

Henning, Robert A., Sauter, Steven L. and Krieg, Edward F. (1992): Work Rhythm and Physiological Rhythms in Repetitive Computer Work: Effects of Synchronization on Well-Being. In International Journal of Human-Computer Interaction, 4 (3) pp. 233-243.

“This study tested the hypothesis that asynchrony between the work rhythm and a worker's internal physiological rhythms may be a source of stress in repetitive computer work. Experienced typists (N=20) entered lines of numeric data using a video display terminal in a simulated office environment. Each day of the 2-day experiment consisted of six 40-min work periods. The work rhythm was varied between work periods by adjusting the field length of data entry lines (3-13 characters). Breathing and cardiac responses were monitored continuously throughout work periods, and a mood survey was administered at the end of each work period. The extent of synchronization between (1) breathing response and the work rhythm, (2) cardiac response and the work rhythm, and (3) all three measures (breathing and cardiac responses, and the work rhythm) was scored for each work period using cross-spectral analysis. Synchronization scores were then evaluated as predictors of mood state and physiological response using multiple regression techniques. Results indicated that synchronization between the work rhythm and breathing response was predictive of reduced heart rate and increased heart rate variability (suggesting reduced stress). Synchronization between the work rhythm and cardiac response was predictive of both reduced fatigue and reduced boredom. Synchronization among all three measures (breathing and cardiac responses, and the work rhythm) was predictive of reduced boredom and reduced heart rate. These results suggest that the uncoupling of work and physiological rhythms may partly explain worker dissatisfaction and health complaints in highly regimented, computer-based tasks.”

1988

Edit | Del

Henning, Robert A., Krieg, Edward F. and Sauter, Steven L. (1988): Effects of Social Interaction on Performance and Mood State During Computer-Based Data Entry Work. In: Proceedings of the Human Factors Society 32nd Annual Meeting 1988. pp. 506-510.

“The effects of social interaction on performance and mood state were investigated for computer-based data entry work. A highly repetitive, screen-based, numeric data entry task was performed in a laboratory environment. Experienced data entry workers (N=16) performed the task under social and nonsocial conditions. Pairs of subjects worked at a room divider prevented visual contact and conversation was not permitted. During the nonsocial condition a room divider prevented visual contact and conversation was not permitted. During the social condition visual contact and conversation were permitted. Each condition consisted of three, 40-min work periods separated by 10-min rest breaks away from the workstation. The two subjects entered lines of data which had the same or an unequal number of characters so that interactions between task similarity and social/nonsocial conditions could be evaluated. Keystroke output, error rate, and the number of character corrections with the backspace key were scored for each work period. In addition, a survey of mood state was administered before and after each work period. Data analyses indicated that tension, irritation, perceived stress and error rate were less in the social condition. No effect on total keystroke output or backspace use was found in the social condition. No interaction between task similarity conditions and social/nonsocial conditions was found. These results suggest that social interaction during data entry work can benefit worker well-being and error rate performance without significantly affecting keystroke output. These results have implications for the design of work environments for data entry workers.”

Add publication