WHAT IS COGNITIVE WORKLOAD?
COGNITIVE WORKLOAD is defined as the level of measurable mental effort put forth by an individual in response to one or more cognitive tasks. It is usually considered to be a property of an...
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COGNITIVE WORKLOAD is defined as the level of measurable mental effort put forth by an individual in response to one or more cognitive tasks. It is usually considered to be a property of an...
What sorts of tasks reliably elicit cognitive workload? Our experience is that cognitive workload increases as more brain regions or more cognitive functions become involved. Thus, tasks that are high level tasks such as...
There exist only a few ways to measure cognitive workload. Until fairly recently, the available choices were to rely on external behavioral outcomes or on the individual’s own impression of workload. With the former,...
The most common statistical tests involving cognitive workload are the parametric F tests of means and variances based on the general linear model (i.e., all analysis of variance and regression models) and the nonparametric...
The cognitive demands of a task can be examined using a process called cognitive task analysis. A cognitive task analysis produces predominantly verbal descriptions rather than quantitative measurements that may be compared across tasks....
The Index of Cognitive Activity (ICA) is a patented metric developed by Dr. Sandra Marshall and commercially available at http://www.eyetracking.com. The ICA is based on the transformation of pupil diameter through signal processing algorithms...
The relationship between individuals having more and less proficiency (often described as expert and novice) is shown below. Not surprisingly, the graph mimics the one depicting the impact of training. The characterization of expertise...
A trending area of research is the impact of fatigue on performance in critical situations such as operating a vehicle. The figure below suggests the impact of fatigue on both cognitive workload and performance....
One important way to change an individual’s cognitive workload is through training. The figure below is an idealized view of the impact of training. Here, the lighter lines repeat the graph performance and workload...
Most research focuses on the impact on both workload and performance of specific cognitive tasks and their associated cognitive demands. This relationship is shown in the figure below. Stated most simply, what this figure...
Cognitive workload describes an individual’s mental response to a task. Cognitive task load describes the cognitive demands inherent in the task. The individual’s cognitive workload is greatly influenced by the task’s cognitive demands, with...
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