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Topic:Emotions
The study of emotions in horses involves understanding the behavioral, physiological, and psychological responses of horses to various stimuli. Emotions in horses can be inferred through observable behaviors, such as vocalizations, body language, and interactions with their environment and other animals. Physiological indicators, including heart rate, cortisol levels, and other stress-related biomarkers, are also used to assess emotional states. This research area explores how emotions affect horse welfare, training outcomes, and human-animal interactions. This page compiles peer-reviewed research studies and scholarly articles that examine the identification, measurement, and implications of emotional states in horses.
Chronic State and Relationship to Humans Influence How Horses Decode Emotions in Human Voices: A Brain and Behavior Study. Current research on acoustic encoding of emotional content suggests that there are universal cues, allowing for decoding within and across taxa. This is particularly important for human-animal relationships, wherein domestic animals are supposed to be particularly efficient in decoding human emotions. Here we investigated whether the decoding of the emotional content in human voices shared universal acoustic properties, or whether it could be influenced by experience. Emotional human voices were presented to two populations of horses, in which behavioral, cardiac, and brain responses were meas...
Equine-Assisted Learning for Children with Trauma and their Caregivers. Animal-assisted therapies, including work with horses, are increasingly incorporated into interventions aiming to promote health and well-being for individuals exposed to trauma. This study evaluates an equine-assisted learning (EAL) intervention with children who have experienced trauma and their caregivers. Children and caregivers were referred for participation by social service agencies and law enforcement based on reports of children's exposure to trauma. Children participated in a seven-week psycho-educational EAL Intervention, Resilience Reins, which aims to improve children's competenc...
Using Functional Near-Infrared Spectroscopy to Elucidate Neurophysiological Mechanism of Action of Equine-Assisted Services: Proof-of-Concept Study. Equine-assisted services (EAS) are used for civilian and military trauma survivors to reduce depression and posttraumatic stress symptoms. While early scientific evidence supports the benefits of EAS, the neurophysiological mechanisms underlying these benefits are unknown. The specific aims of this exploratory study were to determine (1) whether functional near-infrared spectroscopy (fNIRS) neuroimaging can be used to explore neural responses of EAS veteran participants and (2) the correlation between neural responses and psychological outcomes of the participants interacting with equines. Fif...
Equine therapy in the management of teenagers with anorexia nervosa: a qualitative study. Anorexia nervosa is a complex psychiatric pathology with limited therapeutic tools to reduce morbidity and mortality. Equine-assisted therapy could provide additional therapeutic benefits. Objective: We aimed to explore the effects of equine-assisted therapy on the experience of adolescents with anorexia nervosa. Methods: Using a qualitative approach based on Interpretative Phenomenological Analysis, we conducted semi-structured interviews with nine participants who had taken part in equine-assisted therapy sessions. Results: Three superordinate themes were found. Participants initially descri...
Lady and the champ: The shared career experiences and retirement transition of a champion jockey and his partner. Elite sporting careers are made up of a succession of transitions and adjustments across multiple layers. Part of the microenvironment is an athlete's romantic partner who moves through the transitions alongside them, being impacted along the way. Though researchers are yet to explore jockeys and their partners experiences within the horse racing context. Framed through the transition environment working model (Henriksen et al., 2024) and supported by the family systems theory (Broderick, 1993), this study aimed to explore the career experiences and retirement transition of a retired Champion ...
Equine-Assisted Intervention and Alzheimer’s Disease: A Non-randomized, Controlled, Multicenter Study. This study evaluated the psychological benefit of equine-assisted intervention (EAI) for older adults living with Alzheimer disease (AD). A non-randomized, controlled, multicenter study was conducted in 14 nursing homes. A total of 74 older adults were recruited and divided into three groups: a group benefiting from an EAI program, a group following an adapted physical activity program (APA), and a control group continuing their daily activities (CG). Psychological health was assessed. The results showed reduced psychobehavioral disorders by week six of EAI, improved quality of life, and sligh...
Social Isolation of Horses vs. Support Provided by a Human. It is assumed that horses have a strong herd instinct that cannot be suppressed by any form of social support from humans. The aim of this study was to assess the behaviour and heart rate parameters of horses that received various forms of human support during short-term social isolation. The research material consisted of 12 clinically healthy recreational warmblood mares and geldings. The test was carried out four times. The research test consisted of two parts, which began in the presence of accompanying horses and under conditions of social isolation, with and without support provided by a...
“There’s no blueprint for this kind of loss”: Resilience following the death of an equine in an equine-assisted services program. For practitioners involved in equine-assisted services (EAS), the death of a horse can be a significant life disruption. This study aims to understand the communicative resilience processes that equine-assisted service practitioners express following the death of an equine in their program. This study analyzed secondary qualitative data from a cross-sectional online survey completed by 84 participants. Analysis revealed practitioners engaged in all five communicative resilience processes following the death of an equine in their program. This research extends current resilience research by exa...
The relationship of early life adversity and physiological synchrony within the therapeutic triad in horse-assisted therapy. In any therapeutic setting, the outcome depends in part on the therapeutic alliance, characterized by mutual understanding, empathy and trust among the participants. This also manifests through physiological synchronization (PS) processes involving breathing, heart and brain. This study examined the dynamics of heart rate variability (HRV) synchronization patterns during horse-assisted therapy. We explored the correlations between the therapist's horse preference, levels of early life adversity (ELA), and PS relationships within and across dyads of participants, therapists, and therapy horses....
Exploring the induction and measurement of positive affective state in equines through a personality-centred lens. There is increasing focus on how to induce and measure positive affective states in animals and the development of social license to operate has brought this to the forefront within equestrianism. This study aimed to utilise a range of methods to induce and measure positive affect in horses in real-world settings. Twenty healthy horses were scored for personality, exposed to four induction methods (wither scratching, high value food provision, positive reinforcement training and the addition of an affiliative conspecific), and data collected on their behaviour (QBA and ethograms) and physiolog...
Auditory enrichment on facial and physiological responses of Pantaneiro geldings and mares under short-term stress. This study aimed to evaluate the effect of auditory stimuli on mares and geldings during social isolation and movement restriction, and their ability to promote the reduction of stress responses. The research was conducted with eight Pantaneiro horses, divided into Experiment I (4 mares) and Experiment II (4 geldings), both experiments were executed equally using a 4x4 Latin square design with experimental (classical, country and new age) and control (no music) treatments. Physiological parameters (heart rate, heart rate variability, respiratory rate, ocular temperature by infrared thermograph...
Characterisation of facial expressions and behaviours of horses in response to positive and negative emotional anticipation using network analysis. The welfare of an animal is closely linked to their emotional experiences, making it essential to identify reliable indicators of these emotions. This study aimed to identify behaviours and facial movements in horses experiencing contrasting emotional valence, triggered by the anticipation of a positive condition (going to pasture) or a negative condition (going alone to a novel environment). Twenty horses were daily trained to wait in a starting box before being exposed to these two conditions. After one week of positive training or negative training, we analysed horses' behaviours, cortisol ...
Inducing and measuring positive affective state in domesticated equines: A Delphi consultation. Over the last twenty years the definition of good animal welfare has advanced from the ‘absence of negative welfare states’ to the aim of identifying the presence of positive welfare states; however, research on positive animal welfare is relatively new. Consequently, through expert consultation, this study aimed to synthesise knowledge regarding domesticated equine emotional state, specifically methods to induce and measure positive affective states, which could be of significant benefit to equine welfare across sectors. A Delphi consultation of experts in the field of equine behaviour, w...
Investigating the Effects of Equine-Assisted Therapy in Individuals With Schizophrenia: A Randomized Controlled Trial. To examine the effectiveness of equine-assisted therapy on symptoms, quality of life, anxiety, and loneliness in individuals with schizophrenia. Unassigned: A randomized controlled trial was conducted with individuals with schizophrenia registered at a community mental health center. The study involved 61 participants (30 in the intervention group, 31 in the control group). An 8-week equine-assisted therapeutic intervention was implemented for the intervention group. Data were collected using a Personal Information Form, the Positive and Negative Syndrome Scale (PANSS), Trait Anxiety Inventory...
A segment-based framework for explainability in animal affective computing. Recent developments in animal motion tracking and pose recognition have revolutionized the study of animal behavior. More recent efforts extend beyond tracking towards affect recognition using facial and body language analysis, with far-reaching applications in animal welfare and health. Deep learning models are the most commonly used in this context. However, their "black box" nature poses a significant challenge to explainability, which is vital for building trust and encouraging adoption among researchers. Despite its importance, the field of explainability and its quantification remains un...
Best practices for physiological data collection in youth with autism and co-occurring mental health diagnoses: Implications for human-animal intervention research. The purpose of this paper is to serve as a catalyst for the human-animal interaction research field to improve scientific rigor and accelerate the knowledge of field-based physiological responses during equine-assisted services in youth with autism spectrum disorder. This paper outlines the best practices for collecting and analyzing electrocardiogram and electrodermal activity in youth with autism spectrum disorder, utilized during a 10-week therapeutic horseback riding intervention.•Motivation strategies such as device choice, reward systems, and a visual schedule should be implemented to ...
Enhancing equine welfare: a qualitative study on the impact of RAiSE (Recognizing Affective States in Equine) as an educational tool. The horse industry's growing focus on improving horse welfare stems from stakeholders' desires, increasing public scrutiny, and potential threats to its Social License to Operate. Correctly assessing equine affective states is crucial for enhancing horse welfare. However, horse owners often struggle with this assessment, especially those with limited consistent access to horses. To address this gap, RAiSE (Recognizing Affective State in Equine) was developed as an educational tool aimed at improving horse industry participants' ability to recognize these states. After development of the educat...
The neurobiological basis of emotions and their connection to facial expressions in non-human mammals: insights in nonverbal communication. Recognizing that nonhuman animals are sentient beings has increased interest in studying their emotional state. Similar to humans, research has shown that some nonhuman mammals can modify facial expressions by contraction/relaxation of facial muscles according to their affective state. From a neurophysiological perspective, emotions are processed in several brain structures, mainly from the limbic system, such as the hypothalamus, hypophysis, hippocampus, prefrontal cortex, and amygdala. The converged pathways between the amygdala, the motor cortex, and its projections to the facial nerve cont...
How facial expressions reveal acute pain in domestic animals with facial pain scales as a diagnostic tool. The growing interest in managing and recognizing pain in animals has led to the search for more sensitive methods to evaluate it, especially because some species conceal any visible changes associated with pain or are not easily assessed. Research has shown that an animal's facial expression changes when exposed to painful stimuli. Thus, developing several pain scales (grimace scales) in species such as horses, cattle, pigs, sheep, donkeys, rabbits, rats, mice, and cats has helped to improve the study of pain in veterinary medicine. The possibility of using facial expression as an indicator of...
Exploring the Human-Animal Interaction (HAI) for Children with ASD Across Countries: A Systematic Review. Human-Animal Interaction (HAI) has been widely adopted as an approach to enhance the well-being of children with ASD, who often experience significant social impairments, emotional dysregulation, and other daily challenges. Given the potential variation of HAI across countries, there is a particular need to explore this phenomenon within different cultural contexts and to illuminate directions for facilitating positive HAI among children with ASD. The purpose of this review is to systematically synthesize the current knowledge of HAI as applied to children with ASD and to discuss possible vari...
Assessing Equine Behavioural Responses in Equine-Assisted Services: A Field Study Analysis. Equine-Assisted Services (EAS) offer significant benefits for individuals with intellectual and/or physical disabilities. However, ensuring the welfare of the horses involved remains a key ethical concern. The objective of this study was to assess the affective states of horses involved in EAS while also establishing behavioural thresholds for indicators of positive or negative affective states. A total of 98 horses were observed over a two-month period, accumulating data about horse behaviour and session characteristics from 830 EAS sessions. Horses participating in coaching programs averaged...
Nay to Prey: Challenging the View of Horses as a “Prey” Species. This paper challenges the prevalent characterization of domesticated horses as prey species that inherently view humans as predators. Drawing on evolutionary, ethological, and cognitive evidence, we propose the "mutualistic coevolution hypothesis", which posits that horses and humans have evolved a partnership marked by cooperation rather than fear. We critically assess the "prey hypothesis", emphasizing a predator-prey model, which dominates equine training and the literature, and we argue that it inadequately explains horses' morphology, behaviors, and cognitive capacities. Comparative studi...
Through a Horse’s Eyes: Investigating Cognitive Bias and Responses to Humans in Equine-Assisted Interventions. Animal-assisted interventions (AAIs) have become increasingly popular, with horses being one of the most commonly used species. While the effects of equine-assisted interventions (EAIs) have been widely studied in humans, research focusing on animals involved in such work is limited. Understanding how animals perceive their world is ethically important because their perception reflects the valence of their underlying mood. We investigated the cognitive judgement bias (pessimistic vs. optimistic) and perception of humans (negative vs. positive) in horses from three different facilities, divided...
Anthropomorphizing with Critical Reflexivity: The Danger and Potential of Anthropomorphizing in Equine-Facilitated Learning and Psychotherapy. This article used an intersectional feminist analytic framework to theorize the role of anthropomorphizing human-equine interactions in the HERD Institute's modality for practitioners of Equine-facilitated learning and equine-facilitated psychotherapy (EFL/P). EFL/P is a traditionally human-centered activity which leverages anthropomorphizing equine behavior and emotions to better understand human selves and dynamics by assigning human emotions to equids and human-equine interactions. Intersectional feminist theories were used to interpret 11 in-depth interviews with EFL/P practitioners. The d...
Correction: Automated recognition of emotional states of horses from facial expressions. [This corrects the article DOI: 10.1371/journal.pone.0302893.].
Identifying Novel Emotions and Wellbeing of Horses from Videos Through Unsupervised Learning. This research applies unsupervised learning on a large original dataset of horses in the wild to identify previously unidentified horse emotions. We construct a novel, high-quality, diverse dataset of 3929 images consisting of five wild horse breeds worldwide at different geographical locations. We base our analysis on the seven Panksepp emotions of mammals "Exploring", "Sadness", "Playing", "Rage", "Fear", "Affectionate" and "Lust", along with one additional emotion "Pain" which has been shown to be highly relevant for horses. We apply the contrastive learning framework MoCo (Momentum Contras...
Heart rate and salivary cortisol as indicators of arousal and synchrony in clients, therapy horses and therapist in equine-assisted therapy. This exploratory study aimed to analyse physiological interaction processes in equine-assisted-therapy (EAT) between client, therapy horse and therapist. Methods: We measured heart rate (HR), heart rate variability (HRV) and cortisol levels before, during and after a standardized therapy session and a control condition in one therapist, four therapy horses and ten female clients in emerging adulthood (Mn = 21.8 years, SD = 3.39). The clients were diagnosed with mild (N = 5) to moderate (N = 5) intellectual disability (ID). Results: There was no significant change in the client's HR, HR...
Protocol to implement and evaluate a culturally secure, strength-based, equine-assisted learning program, “Yawardani Jan-ga” (horses helping), to support the social and emotional wellbeing of Australian aboriginal children and young people. Australian Aboriginal people experience stressors from inequalities across crucial social determinants, including deep and entrenched disadvantage and exclusion. The impact of unaddressed historical issues is pervasive and intergenerational. The disproportionate rates of Aboriginal youth suicide, juvenile detention and imprisonment highlight the inadequacy of existing social and emotional wellbeing programs and services for Aboriginal children and young people. There is increasing recognition in Australia that aligning social and emotional wellbeing interventions with Western values and concep...
Emotional and Motor Improvements in Children With ADHD Following Equine-Assisted Occupational Therapy. Attention deficit/hyperactivity disorder (ADHD) is characterized by inattention, hyperactivity, and impulsivity, as children may present developmental and chronic impairments in cognitive-emotional and sensory-motor aspects. This study examined the changes in self-efficacy, muscle tone, and mood following a single session of Equine-Assisted Occupational Therapy (EAOT) within Attention Skills Therapy (ASTride) intervention, designed to improve emotional and cognitive functions. Notably, 31 children diagnosed with ADHD aged 6-12 (mean age 10.06) years. A preliminary study of pre- and post-single...
Promoting mental health in military veterans. Methodology and evaluation tools in a pilot study involving an Equine-Assisted Intervention. Military veterans exposed to stressful or traumatic events may experience adjustment difficulties in the post-deployment period, developing a high risk of mental health-related issues. Promising complementary practices such as Equine-Assisted Therapy (EAT) are now widely used, although standardized protocols are missing. The present study aimed to develop an EAT standardized intervention. Methods: A total of 16 veterans were enrolled for the study (11 veterans for the EAT group and 5 veterans for the control group). The EAT lasted 9 months and both a quantitative (State-Trait Anxiety Inventory...
