Cited by 364Emotion and Mood RecognitionUser Authentication and Security SystemsGaze Tracking and Assistive Technology

Identifying emotional states using keystroke dynamics

Epp, Clayton, Lippold, Michael, Mandryk, Regan L.·2011·Proceedings of the SIGCHI Conference on Human Factors in Computing Systems

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%.

Integrity signals

Registry

Crossref · 10.1145/1978942.1979046

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36 of 36 references verified0 citation errors · 0 not checkable

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  • Keystroke Dynamics can be used to determine the authors' emotional state.

    “Besides its natural use for authentication, KD can also be used to determine the authors' emotional state [102][103][104][105]”
  • The information channels (keystroke dynamics, written/oral content, and facial video) synergistically support investigations into participant emotions triggered by experimental stressors.

    “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.”

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Authors
Epp, C., Lippold, M., & Mandryk, R. L.
Affiliations
University of Saskatchewan (CA)
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
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › 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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