Workload history effects: A comparison of sudden increases and decreases on performance |
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Authors: | Luz-Eugenia Cox-Fuenzalida Cheryl Beeler Laura Sohl |
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Institution: | (1) University of Oklahoma, USA;(2) Department of Psychology, University of Oklahoma, Dale Hall Tower 705, 73019 Norman, OK |
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Abstract: | The present study examined workload history effects by manipulating sudden changes in workload level, and was designed to
enable a direct comparison between sudden increasing and decreasing in workload conditions. A sample of 149 undergraduates
was randomly assigned to either a sudden decrease or a sudden increase in workload condition. Participants performed a Sternberg
memory task while percent correct was recorded. Mixed-model ANOVA results indicated that performance was significantly impaired
for both conditions. Findings supported previous research suggesting that either a sudden decrease (High to Medium) or increase
(Low to Medium) workload could result in impaired performance (Cox-Fuenzalida, in press; Cox-Fuenzalida & Angie, in press;
Cox-Fuenzalida, Swickert & Hittner, 2004). Furthermore, this study suggests that a sudden decrease may result in greater detrimental
effects.
The authors express their gratitude to the research team from the Personality and Human Performance Research Laboratory at
the University of Oklahoma for their invaluable assistance in data planning and collection.
Laura Sohl is currently employed with the Oklahoma Office of Personnel Management. |
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