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Identifying emotional states using keystroke dynamics
Abstract
The ability to recognize emotions is an important part of building intelligent computers. Emotionally-aware systems would have a rich context from which to make appropriate decisions about how to interact with the user or adapt their system response. There are two main problems with current system approaches for identifying emotions that limit their applicability: they can be invasive and can require costly equipment. Our solution is to determine user emotion by analyzing the rhythm of their typing patterns on a standard keyboard. We conducted a field study where we collected participants' keystrokes and their emotional states via self-reports. From this data, we extracted keystroke features, and created classifiers for 15 emotional states. Our top results include 2-level classifiers for confidence, hesitance, nervousness, relaxation, sadness, and tiredness with accuracies ranging from 77 to 88%. In addition, we show promise for anger and excitement, with accuracies of 84%.
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“Besides its natural use for authentication, KD can also be used to determine the authors' emotional state [102][103][104][105]”
From Online grooming detection: A comprehensive survey of child exploitation in chat logs (2023) · cites this paper as [102]
In the citing paper
“They combine keystroke dynamics, written/oral content, and facial video. These information channels synergistically support investigations into participant emotions9–12, triggered by the experimental stressors.”
From Stress and productivity patterns of interrupted, synergistic, and antagonistic office activities (2019) · cites this paper as [9]
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Metadata
- Authors
- Epp, C., Lippold, M., & Mandryk, R. L.
- Affiliations
- University of Saskatchewan (CA)
- ORCID
- Mandryk, Regan L.
- Venue
- Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
- Publisher
- ACM
- Published
- 2011-05-07
- Pages
- 715-724
- OpenAlex
- W1978986669
- Cited by
- 364
- References
- 37
- Citations by year
- 2026: 11 · 2025: 16 · 2024: 14 · 2023: 15 · 2022: 46 · 2021: 25 · 2020: 24 · 2019: 36 · 2018: 15 · 2017: 35 · 2016: 21 · 2015: 31 · 2014: 31 · 2013: 20 · 2012: 19
- FWCI
- 37.63
- Type
- conference paper
- Language
- en
- Open access
- closed
- Locations
- CHI Conference on Human Factors in Computing Systems (publishedVersion)
- Funders
- University of Saskatchewan
- Natural Sciences and Engineering Research Council of Canada
- Topics
- Physical Sciences › Computer Science › Artificial Intelligence › Emotion and Mood Recognition
- Physical Sciences › Computer Science › Information Systems › User Authentication and Security Systems
- Physical Sciences › Computer Science › Human-Computer Interaction › Gaze Tracking and Assistive Technology
- Keywords
- emotion recognition, keystroke dynamics, typing patterns, emotional state, emotion-aware systems, user modeling, classification accuracy
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