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Systematic manipulation of experimenters' non-verbal behaviors for the investigation of pain reports and placebo effects

OBJECTIVE: Non-verbal behaviors (NBs) of caregivers affect pain reports and placebo effects. However, little experimental research has systematically examined the caregivers' NBs. This study protocol and preparatory study report a systematic manipulation of experimenters' NBs to investigat...

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Detalles Bibliográficos
Autores principales: Daniali, Hojjat, Ruben, Mollie A., Flaten, Magne Arve
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10644817/
https://www.ncbi.nlm.nih.gov/pubmed/38023052
http://dx.doi.org/10.3389/fpsyg.2023.1248127
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author Daniali, Hojjat
Ruben, Mollie A.
Flaten, Magne Arve
author_facet Daniali, Hojjat
Ruben, Mollie A.
Flaten, Magne Arve
author_sort Daniali, Hojjat
collection PubMed
description OBJECTIVE: Non-verbal behaviors (NBs) of caregivers affect pain reports and placebo effects. However, little experimental research has systematically examined the caregivers' NBs. This study protocol and preparatory study report a systematic manipulation of experimenters' NBs to investigate pain report and placebo effects. METHODS: We propose an experiment in which videotaped experimenters (VEs) conduct a pain stimulation and a placebo treatment study. The VEs express one positively enhanced NB and keep the other NBs neutral. Participants will be randomized to either the positive facial expressions (+FE), tone of voice (+TV), body movement (+BM), or neutral NBs (i.e., neutral condition; NC) of the VEs. As a preparatory study for proof of concept, two groups of NB coders from Norway and the USA separately rated the degree of NBs (eye contact, body postures and movements, and tone of voice), and impressions of dominance and being in charge, positivity, and expressivity from each NB video. The NB videos had construct validity and reliability. The +BM and +FE were rated as more dominant and in charge than the +TV and the NC. The +FE and +BM were rated as the most positive and expressive NBs, respectively. EXPECTED RESULTS: +FE will have the largest placebo effects on pain and stress levels. However, transmitting the NBs to patients by VEs is challenging. Moreover, controlling for the effects of research assistants present in the testing room is challenging. DISCUSSION: We propose that caregivers' NBs affect pain reports and placebo effects. Moreover, different NBs elicit different impressions, and a better understanding of the role of caregiver NBs requires more rigorous investigations. Lastly, aiming to investigate the caregiver NBs, the varying degrees of micro-NBs and their effects on the formation of impressions should be considered.
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spelling pubmed-106448172023-10-31 Systematic manipulation of experimenters' non-verbal behaviors for the investigation of pain reports and placebo effects Daniali, Hojjat Ruben, Mollie A. Flaten, Magne Arve Front Psychol Psychology OBJECTIVE: Non-verbal behaviors (NBs) of caregivers affect pain reports and placebo effects. However, little experimental research has systematically examined the caregivers' NBs. This study protocol and preparatory study report a systematic manipulation of experimenters' NBs to investigate pain report and placebo effects. METHODS: We propose an experiment in which videotaped experimenters (VEs) conduct a pain stimulation and a placebo treatment study. The VEs express one positively enhanced NB and keep the other NBs neutral. Participants will be randomized to either the positive facial expressions (+FE), tone of voice (+TV), body movement (+BM), or neutral NBs (i.e., neutral condition; NC) of the VEs. As a preparatory study for proof of concept, two groups of NB coders from Norway and the USA separately rated the degree of NBs (eye contact, body postures and movements, and tone of voice), and impressions of dominance and being in charge, positivity, and expressivity from each NB video. The NB videos had construct validity and reliability. The +BM and +FE were rated as more dominant and in charge than the +TV and the NC. The +FE and +BM were rated as the most positive and expressive NBs, respectively. EXPECTED RESULTS: +FE will have the largest placebo effects on pain and stress levels. However, transmitting the NBs to patients by VEs is challenging. Moreover, controlling for the effects of research assistants present in the testing room is challenging. DISCUSSION: We propose that caregivers' NBs affect pain reports and placebo effects. Moreover, different NBs elicit different impressions, and a better understanding of the role of caregiver NBs requires more rigorous investigations. Lastly, aiming to investigate the caregiver NBs, the varying degrees of micro-NBs and their effects on the formation of impressions should be considered. Frontiers Media S.A. 2023-10-31 /pmc/articles/PMC10644817/ /pubmed/38023052 http://dx.doi.org/10.3389/fpsyg.2023.1248127 Text en Copyright © 2023 Daniali, Ruben and Flaten. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Psychology
Daniali, Hojjat
Ruben, Mollie A.
Flaten, Magne Arve
Systematic manipulation of experimenters' non-verbal behaviors for the investigation of pain reports and placebo effects
title Systematic manipulation of experimenters' non-verbal behaviors for the investigation of pain reports and placebo effects
title_full Systematic manipulation of experimenters' non-verbal behaviors for the investigation of pain reports and placebo effects
title_fullStr Systematic manipulation of experimenters' non-verbal behaviors for the investigation of pain reports and placebo effects
title_full_unstemmed Systematic manipulation of experimenters' non-verbal behaviors for the investigation of pain reports and placebo effects
title_short Systematic manipulation of experimenters' non-verbal behaviors for the investigation of pain reports and placebo effects
title_sort systematic manipulation of experimenters' non-verbal behaviors for the investigation of pain reports and placebo effects
topic Psychology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10644817/
https://www.ncbi.nlm.nih.gov/pubmed/38023052
http://dx.doi.org/10.3389/fpsyg.2023.1248127
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