U.S. Department of Energy

Pacific Northwest National Laboratory

Understanding Cognitive Depletion in the Science of Interaction

Publish Date: 
Wednesday, September 2, 2015
Cognitive Depletion, the decline in user performance over time through the exhaustion of mental resources, ensures an increasing prevalence of human error in the interaction between computers and their users. Key logger data from the Science of Interaction project was analyzed to determine if patterns in user activity could be used to determine change in user performance. Though the majority of observations made are inconclusive, we have determined through analysis of entropy and frequency correlations that certain assumed measures of cognitive depletion are not correlated. Therefore, Cognitive Depletion does not occur in this project, or our hypothesized measures are not reflective of cognitive depletion. Suggestions are made for future research capable of affirming and expanding upon these results.
Riggs JG. 2015. Understanding Cognitive Depletion in the Science of Interaction. PNNL-24646, Pacific Northwest National Laboratory, Richland, WA.
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