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Liu H, Zhang D, Zhu Y, Ma H, Xiao H. Emotions spread like contagious diseases. Front Psychol 2025; 16:1493512. [PMID: 40271352 PMCID: PMC12014600 DOI: 10.3389/fpsyg.2025.1493512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2024] [Accepted: 03/21/2025] [Indexed: 04/25/2025] Open
Abstract
Emotional contagion, that is, the spontaneous synchronization of emotions among individuals, is the basic mechanism of social cohesion and survival of different species. Emotional contagion can be observed in humans and many animals, and it has become an effective means to protect individuals from danger. The study of emotional contagion in different animals is of evolutionary significance, and in human society, emotional contagion has an important impact on mental health and group behavior. However, the existing research still has obvious shortcomings in the similarities and differences of cross-species emotional contagion, the communication dynamics in virtual space and the infectious effect of positive emotions. This paper reviews the mechanisms of emotional contagion in different species, such as rodents, nonhuman primates, dogs, crows and zebrafish, highlighting evolutionary conservatism and species-specific adaptation, and analyzes the role of human children's behavioral mimicry in its early development. Furthermore, we extend the discussion of emotional contagion to virtual social networks, revealing the unique communication mechanism in online environment. In addition, by combing the sociological model and the emerging neurocognitive model, the complex process of emotional contagion can be explained more comprehensively. Through multidisciplinary perspective, it provides systematic theoretical and empirical support for us to understand emotional contagion.
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Affiliation(s)
- Hao Liu
- Nursing Department, Tianjin Union Medical Center, The First Affiliated Hospital of Nankai University, Tianjin, China
| | - Dong Zhang
- Department of Urology, Tianjin Union Medical Center, The First Affiliated Hospital of Nankai University, Tianjin, China
| | - Yaning Zhu
- Nursing Department, Tianjin Union Medical Center, The First Affiliated Hospital of Nankai University, Tianjin, China
| | - Hongwen Ma
- Nursing Department, Tianjin Union Medical Center, The First Affiliated Hospital of Nankai University, Tianjin, China
| | - Hongling Xiao
- School of Nursing, Zhejiang Chinese Medicine University, Zhejiang, China
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Holder TRN, Nichols C, Summers E, Roberts DL, Bozkurt A. Exploring the Dynamics of Canine-Assisted Interactions: A Wearable Approach to Understanding Interspecies Well-Being. Animals (Basel) 2024; 14:3628. [PMID: 39765532 PMCID: PMC11672835 DOI: 10.3390/ani14243628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2024] [Revised: 11/15/2024] [Accepted: 11/27/2024] [Indexed: 01/11/2025] Open
Abstract
Canine-assisted interactions (CAIs) have been explored to offer therapeutic benefits to human participants in various contexts, from addressing cancer-related fatigue to treating post-traumatic stress disorder. Despite their widespread adoption, there are still unresolved questions regarding the outcomes for both humans and animals involved in these interactions. Previous attempts to address these questions have suffered from core methodological weaknesses, especially due to absence of tools for an efficient objective evaluation and lack of focus on the canine perspective. In this article, we present a first-of-its-kind system and study to collect simultaneous and continuous physiological data from both of the CAI interactants. Motivated by our extensive field reviews and stakeholder feedback, this comprehensive wearable system is composed of custom-designed and commercially available sensor devices. We performed a repeated-measures pilot study, to combine data collected via this system with a novel dyadic behavioral coding method and short- and long-term surveys. We evaluated these multimodal data streams independently, and we further correlated the psychological, physiological, and behavioral metrics to better elucidate the outcomes and dynamics of CAIs. Confirming previous field results, human electrodermal activity is the measure most strongly distinguished between the dyads' non-interaction and interaction periods. Valence, arousal, and the positive affect of the human participant significantly increased during interaction with the canine participant. Also, we observed in our pilot study that (a) the canine heart rate was more dynamic than the human's during interactions, (b) the surveys proved to be the best indicator of the subjects' affective state, and (c) the behavior coding approaches best tracked the bond quality between the interacting dyads. Notably, we found that most of the interaction sessions were characterized by extended neutral periods with some positive and negative peaks, where the bonded pairs might display decreased behavioral synchrony. We also present three new representations of the internal and overall dynamics of CAIs for adoption by the broader field. Lastly, this paper discusses ongoing options for further dyadic analysis, interspecies emotion prediction, integration of contextually relevant environmental data, and standardization of human-animal interaction equipment and analytical approaches. Altogether, this work takes a significant step forward on a promising path to our better understanding of how CAIs improve well-being and how interspecies psychophysiological states can be appropriately measured.
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Affiliation(s)
- Timothy R. N. Holder
- Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA;
| | - Colt Nichols
- Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27695, USA; (C.N.); (E.S.)
| | - Emily Summers
- Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27695, USA; (C.N.); (E.S.)
| | - David L. Roberts
- Department of Computer Science, North Carolina State University, Raleigh, NC 27695, USA;
| | - Alper Bozkurt
- Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27695, USA; (C.N.); (E.S.)
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Dowling-Guyer S, Dabney K, Robertson EAR, Mueller MK. Behavior Coding of Adolescent and Therapy Dog Interactions During a Social Stress Task. Vet Sci 2024; 11:644. [PMID: 39728984 DOI: 10.3390/vetsci11120644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2024] [Revised: 12/06/2024] [Accepted: 12/10/2024] [Indexed: 12/28/2024] Open
Abstract
Youth mental health interventions incorporating trained therapy animals are increasingly popular, but more research is needed to understand the specific interactive behaviors between participants and therapy dogs. Understanding the role of these interactive behaviors is important for supporting both intervention efficacy and animal welfare and well-being. The goal of this study was to develop ethograms to assess interactive behaviors (including both affiliative and stress-related behaviors) of participants and therapy dogs during a social stress task, explore the relationship between human and dog behaviors, and assess how these behaviors may vary between experimental conditions with varying levels of physical contact with the therapy dog. Using video data from a previous experimental study (n = 50 human-therapy dog interactions, n = 25 control group), we successfully developed behavioral ethograms that could be used with a high degree of interrater reliability. Results indicated differences between experimental conditions in dog and human behaviors based on whether participants were interacting with a live or a stuffed dog, and whether they were allowed to touch the dog. These findings suggest that physically interacting with a live dog may be an important feature of these interventions, with participants demonstrating increased positive behaviors such as laughing and smiling in these conditions. Dog behaviors also varied based on whether they were in the touching/petting condition of the study which could indicate reactions to the session and has potential welfare implications for the dogs. Future research should focus on identifying specific patterns of interactive behaviors between dogs and humans that predict anxiolytic outcomes.
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Affiliation(s)
- Seana Dowling-Guyer
- Center for Animals and Public Policy, Cummings School of Veterinary Medicine, Tufts University, 200 Westboro Rd., North Grafton, MA 01536, USA
| | - Katie Dabney
- Center for Animals and Public Policy, Cummings School of Veterinary Medicine, Tufts University, 200 Westboro Rd., North Grafton, MA 01536, USA
| | - Elizabeth A R Robertson
- Center for Animals and Public Policy, Cummings School of Veterinary Medicine, Tufts University, 200 Westboro Rd., North Grafton, MA 01536, USA
| | - Megan K Mueller
- Center for Animals and Public Policy, Cummings School of Veterinary Medicine, Tufts University, 200 Westboro Rd., North Grafton, MA 01536, USA
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Jones MG, Filia K, Rice SM, Cotton SM. Guidance on Minimum Standards for Canine-Assisted Psychotherapy in Adolescent Mental Health: Delphi Expert Consensus on Health, Safety, and Canine Welfare. Animals (Basel) 2024; 14:705. [PMID: 38473090 PMCID: PMC10930943 DOI: 10.3390/ani14050705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 02/17/2024] [Accepted: 02/21/2024] [Indexed: 03/14/2024] Open
Abstract
As interest in animal-assisted therapy (AAT) and canine-assisted psychotherapy (CAP) grows, there are increasing calls for the management of related health, safety, and welfare concerns for canines, providers, and clients. Existing health and safety guidelines lack empirical support and are, at times, contradictory. Welfare is increasingly prioritized; however, tools to monitor and manage welfare are underutilized and under-reported. The aim of this study was to provide expert consensus on the minimum health, safety, and welfare standards required to develop and deliver a CAP group program to adolescents experiencing common mental health disorders. Diverse AAT experts were recruited globally. Using Delphi methodology, over two rounds, 40 panelists reached a consensus agreement to include 32 items from a possible 49 into the minimum standards. Health and safety measures included risk assessment, veterinary screening, preventative medicine, training in infection control, and first aid. Welfare measures included training in welfare assessment, documentation of welfare, and flexible, individualized responses to promote wellbeing. Intestinal screening for parasites and the prohibition of raw food were not supported. Flexible and individualized assessment and management of canine welfare were supported over fixed and time-limited work schedules. Clinical practice implications are discussed, and recommendations are made.
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Affiliation(s)
- Melanie G. Jones
- Centre for Youth Mental Health, University of Melbourne, Parkville, Melbourne, VIC 3052, Australia; (K.F.); (S.M.C.)
- Orygen, Parkville, Melbourne, VIC 3052, Australia
- Lead The Way Institute, Ferntree Gully, Melbourne, VIC 3156, Australia
| | - Kate Filia
- Centre for Youth Mental Health, University of Melbourne, Parkville, Melbourne, VIC 3052, Australia; (K.F.); (S.M.C.)
- Orygen, Parkville, Melbourne, VIC 3052, Australia
| | - Simon M. Rice
- Centre for Youth Mental Health, University of Melbourne, Parkville, Melbourne, VIC 3052, Australia; (K.F.); (S.M.C.)
- Orygen, Parkville, Melbourne, VIC 3052, Australia
| | - Sue M. Cotton
- Centre for Youth Mental Health, University of Melbourne, Parkville, Melbourne, VIC 3052, Australia; (K.F.); (S.M.C.)
- Orygen, Parkville, Melbourne, VIC 3052, Australia
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De Santis M, Filugelli L, Mair A, Normando S, Mutinelli F, Contalbrigo L. How to Measure Human-Dog Interaction in Dog Assisted Interventions? A Scoping Review. Animals (Basel) 2024; 14:410. [PMID: 38338052 PMCID: PMC10854530 DOI: 10.3390/ani14030410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/19/2024] [Accepted: 01/25/2024] [Indexed: 02/12/2024] Open
Abstract
Human-dog interaction is the working tool through which the therapeutic, educational and recreational goals of dog-assisted interventions (DAIs) are achieved. A better understanding of the characteristics of this interaction could improve the effectiveness of DAIs. This scoping review addresses the question: how has the human-dog connection been measured in the context of DAIs? After searching the Web of Science and Scopus platforms, only peer-reviewed, primary research studies reporting measures of therapy dog-human interaction, relationship and bond were included. A total of 70 included articles provided information on what was measured (interaction, relationship or bond) and how, as well as the general context (DAIs or experimental situations with therapy dogs). While the majority of the articles identified use behavioural analysis methods to analyse the interaction between the participant/recipient and the therapy dog during DAIs, it was possible to identify some more structured tools that assess the participant/recipient's interaction, relationship or bond with the therapy dog, as well as tools that consider the animal's perspective or focus on the dog-handler dyad, indicating growing areas of research. The tools and methods identified can be used by both practitioners and researchers to further explore aspects of human-dog interaction in the field of DAIs.
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Affiliation(s)
- Marta De Santis
- National Reference Centre for Animal Assisted Interventions, Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell’Università 10, 35020 Legnaro, Italy; (M.D.S.); (L.F.); (F.M.); (L.C.)
| | - Lorena Filugelli
- National Reference Centre for Animal Assisted Interventions, Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell’Università 10, 35020 Legnaro, Italy; (M.D.S.); (L.F.); (F.M.); (L.C.)
| | - Alberto Mair
- National Reference Centre for Animal Assisted Interventions, Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell’Università 10, 35020 Legnaro, Italy; (M.D.S.); (L.F.); (F.M.); (L.C.)
| | - Simona Normando
- Department of Comparative Biomedicine and Food Science, Università degli Studi di Padova, Viale dell’Università, 14, 35020 Legnaro, Italy;
| | - Franco Mutinelli
- National Reference Centre for Animal Assisted Interventions, Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell’Università 10, 35020 Legnaro, Italy; (M.D.S.); (L.F.); (F.M.); (L.C.)
| | - Laura Contalbrigo
- National Reference Centre for Animal Assisted Interventions, Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell’Università 10, 35020 Legnaro, Italy; (M.D.S.); (L.F.); (F.M.); (L.C.)
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Wijnen B, Martens P. Animals in Animal-Assisted Services: Are They Volunteers or Professionals? Animals (Basel) 2022; 12:ani12192564. [PMID: 36230304 PMCID: PMC9559309 DOI: 10.3390/ani12192564] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 11/16/2022] Open
Abstract
With the increasingly common practice of Animal-Assisted Services (AAS), whether in therapy, coaching, education, or volunteering programs, the concern over animal welfare has also risen. However, no standards have yet been established for good practices to ensure the animal’s mental health. This is largely due to the wide variety of roles played by animals in interventions and the lack of ‘job descriptions’ for the animal in diverse settings. Some professionals call their animal a ‘volunteer’, others mention that some directive guidance is given to the therapy animal, and some assistance animals are highly trained. Misunderstandings could be avoided if the integrated animal were to receive a justifiable label: volunteer or professional. Choosing either one comes with obligations for the owner, handler, or therapist. In this paper, we compare the roles of human volunteers and professionals to the roles of animals involved in therapy. We also demonstrate the obligations that come along with the decision to label animals as such either volunteers or professionals. Furthermore, we make a plea for animal-friendly interventions, whether in a volunteer position or as a professional, in order to stimulate the animal’s cooperation and motivation. Studying dopamine and translating the findings into context-ethograms can provide a way to judge behavior more objectively.
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Development of a Pilot Human-canine Ethogram for an Animal-assisted Education Programme in Primary Schools – A Case Study. Appl Anim Behav Sci 2022. [DOI: 10.1016/j.applanim.2022.105725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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