Pain Expressions in Dementia: Validity of Observers' Pain Judgments as a Function of Angle of Observation.
Facial expressions of pain are important in assessing individuals with dementia and severe communicative limitations. Though frontal views of the face are assumed to allow for the most valid and reliable observational assessments, the impact of viewing angle is unknown. We video-recorded older adult...
| Published in: | Journal of Nonverbal Behavior Vol. 43; no. 3; pp. 309 - 328 |
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| Main Authors: | , , , , |
| Format: | Article |
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Springer Nature
Sep2019
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| Subjects: | |
| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=137684779&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 137684779 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 01915886 JNV jtl: Journal of Nonverbal Behavior issn: 01915886 maglogo: N pubinfo: dt: Sep2019 vid: 43 iid: 3 pid: 237 pub: Springer Nature artinfo: ui: 137684779 10.1007/s10919-019-00303-4 ppf: 309 ppct: 19 formats: fmt: – @attributes: type: T – @attributes: type: P size: 968KB tig: atl: Pain Expressions in Dementia: Validity of Observers' Pain Judgments as a Function of Angle of Observation. aug: au: Erin Browne, M. Hadjistavropoulos, Thomas Prkachin, Kenneth Ashraf, Ahmed Taati, Babak affil: Department of Psychology and Centre on Aging and Health, University of Regina, Regina, SK, Canada Department of Psychology, University of Northern British Columbia, Prince George, BC, Canada Toronto Rehabilitation Institute, University of Toronto, Toronto, ON, Canada Institute of Biomaterials and Biomedical Engineering and Department of Computer Science, University of Toronto, Toronto, ON, Canada su: Communication Facial expression Judgment (Psychology) Pain management Diagnosis of dementia Treatment of dementia Algorithms Physical therapy Video recording Pain measurement sug: subj: Communication Facial expression Judgment (Psychology) Pain management Diagnosis of dementia Treatment of dementia Algorithms Physical therapy Video recording Pain measurement keyword: Behavioral assessment Elderly Nonverbal expression Older adults PACSLAC-II Behavioral assessment Elderly Nonverbal expression Older adults PACSLAC-II ab: Facial expressions of pain are important in assessing individuals with dementia and severe communicative limitations. Though frontal views of the face are assumed to allow for the most valid and reliable observational assessments, the impact of viewing angle is unknown. We video-recorded older adults with and without dementia using cameras capturing different observational angles (e.g., front vs. profile view) both during a physiotherapy examination designed to identify painful areas and during a baseline period. Facial responses were coded using the fine-grained Facial Action Coding System, as well as a systematic clinical observation method. Coding was conducted separately for panoramic (incorporating left, right, and front views), and a profile view of the face. Untrained observers also judged the videos in a laboratory setting. Trained coder reliability was satisfactory for both the profile and panoramic view. Untrained observer judgments from a profile view were substantially more accurate compared to the front view and accounted for more variance in differentiating non-painful from painful situations. The findings add specificity to the communications models of pain (clarifying factors influencing observers' ability to decode pain messages). Perhaps more importantly, the findings have implications for the development of computer vision algorithms and vision technologies designed to monitor and interpret facial expressions in a pain context. That is, the performance of such automated systems is heavily influenced by how reliably these human annotations could be provided and, hence, evaluation of human observers' reliability, from multiple angles of observation, has implications for machine learning development efforts. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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