@inproceedings{3090073505954239a08ad9fd1d1a744b,
title = "Towards an index of opportunity: Understanding in mental workload during task execution",
abstract = "To contribute to systems that reason about human attention, our work empirically demonstrates how a user's mental workload changes during task execution. We conducted a study where users performed interactive, hierarchical tasks while mental workload was measured through the use of pupil size. Results show that (i) different types of subtasks impose different mental workload, (ii) workload decreases at subtask boundaries, (iii) workload decreases more at boundaries higher in a task model and less at boundaries lower in the model, (iv) workload changes among subtask boundaries within the same level of a task model, and (v) effective understanding of why changes in workload occur requires that the measure be tightly coupled to a validated task model. From the results, we show how to map mental workload onto a computational Index of Opportunity that systems can use to better reason about human attention.",
keywords = "Attention, Interruption, Pupil size, Task models",
author = "Iqbal, {Shamsi T.} and Adamczyk, {Piotr D.} and Zheng, {Xianjun Sam} and Bailey, {Brian P.}",
year = "2005",
language = "English (US)",
isbn = "1581139985",
series = "Conference on Human Factors in Computing Systems - Proceedings",
publisher = "Association for Computing Machinery",
pages = "311--320",
booktitle = "CHI 2005",
address = "United States",
note = "CHI 2005: Technology, Safety, Community - Conference on Human Factors in Computing Systems ; Conference date: 02-04-2005 Through 07-04-2005",
}