Analysis of specific recordings found GSR peaks to be correlated with stressful or frustrating events, with responses decreasing over time. This was interpreted as providing evidence for the utility of using GSR to indicate cognitive loads. For all three interfaces, the total response increased with task complexity. Initial analysis of data from five participants indicated that average response levels were lowest for the multimodal interface, followed by speech and then gesture interfaces. Participants used gesture-based, speech-based, or multimodal (speech and gesture) interfaces to complete tasks. An examination of some of these studies indicates the common theme of using these techniques to record real-time observations of a task in progress, as opposed to subjective, posttest response.Ī study of cognitive load and multimodal interfaces used three different traffic control interfaces with three different task complexity levels to investigate the possibility of using galvanic skin response (GSR) to measure cognitive load. Harry Hochheiser, in Research Methods in Human Computer Interaction (Second Edition), 2017 13.6 Examplesĭespite the challenges, numerous HCI researchers have used physiological data to observe user interactions in ways that would not otherwise be possible.
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