Psycho-Physiological Measures for Assessing Cognitive Load.

April 5, 2014

Six elementary cognitive tasks and Sensor-based cognitive load assessment

With a focus on presenting information at the right time, the ubicomp community can benefit greatly from learning the  most salient human measures of cognitive load. Cognitive  load can be used as a metric to determine when or whether  to interrupt a user. In this paper, we collected data from  multiple sensors and compared their ability to assess  cognitive load. Our focus is on visual perception and  cognitive speed-focused tasks that leverage cognitive  abilities common in ubicomp applications. We found that across all participants, the electrocardiogram median absolute deviation and median heat flux measurements were the most accurate at distinguishing between low and
high levels of cognitive load, providing a classification accuracy of over 80% when used together. Our contribution is a real-time, objective, and generalizable method for assessing cognitive load in cognitive tasks commonly found in ubicomp systems and situations of divided attention.

paper copy


 Anind K Dey Eija Haapalainen Jodi Forlizzi SeungJun Kim

UbiComp 2010

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Full Paper