young child hugging a dog
Dogs are common in animal-assisted therapy.
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Animal-assisted therapy (AAT) is an alternative or complementary type of therapy that includes the use of animals in a treatment. The goal of this animal-assisted intervention is to improve a patient's social, emotional, or cognitive functioning. Studies have documented some positive effects of the therapy on subjective self-rating scales and on objective physiological measures such as blood pressure and hormone levels.

The specific animal-assisted therapy can be classified by the type of animal, the targeted population, and how the animal is incorporated into the therapeutic plan. Various animals have been utilized for animal-assisted therapy, with the most common types being canine-assisted therapy and equine-assisted therapy. [1]

Use of these animals in therapies has shown positives results in many cases, such as post-traumatic stress disorder (PTSD), depression, anxiety, sexual abuse victims, dementia, autism, and more. It can be used in many different facilities, like hospitals, prisons, and nursing homes, to aid in the therapy provided. Some studies have shown that animal-assisted therapy can improve many aspects of a patient's life, such as improving their overall mood or reducing feelings of isolation.[2][3]

Description

Animal-assisted therapy is an alternative or complementary type of therapy that includes the use of animals in a treatment.[4][5] It falls under the realm of animal-assisted intervention, which encompasses any intervention in the studio that includes an animal in a therapeutic context such as emotional support animals, service animals trained to assist with daily activities, and animal assisted activity.[6][7][8][9]

The goal of animal-assisted therapy is to improve a patient's social, emotional, or cognitive functioning and literature reviews state that animals can be useful for educational and motivational effectiveness for participants.[10][11]

History

Research has found that animals can have an overall positive effect on health and improve mood and quality of life.[12][7][13] Studies have documented some positive effects of the therapy on subjective self-rating scales and on objective physiological measures such as blood pressure and hormone levels.[14] The positive effect has been linked to the human-animal bond. In a variety of settings, such as prisons, nursing homes, and mental institutions, these animals are used to assist people with different disabilities or disorders.[15] In modern times animals are seen as "agents of socialization" and as providers of "social support and relaxation".[16] The earliest reported use of the therapy for the mentally ill took place in the late 18th century at the York Retreat in England, led by William Tuke.[17] Patients at this facility were allowed to wander the grounds which contained a population of small domestic animals. These were believed to be effective tools for socialization. In 1860, the Bethlem Hospital in England followed the same trend and added animals to the ward, greatly influencing the morale of the patients living there.[17] However, in other pieces of literature it states that animal-assisted therapy was used as early as 1792 at the Quaker Society of Friends York Retreat in England.[18] Velde, Cipriani & Fisher also state "Florence Nightingale appreciated the benefits of pets in the treatment of individuals with illness."

Examples of historical uses

The US military promoted the use of dogs as a therapeutic intervention with psychiatric patients in 1919 at St Elizabeth's Hospital in Washington, DC.[19]

Sigmund Freud kept many dogs and often had his chow Jofi present during his pioneering sessions of psychoanalysis. He noticed that the presence of the dog was helpful because the patient would find that their speech would not shock or disturb the dog and this reassured them and so encouraged them to relax and confide. This was most effective when the patient was a child or adolescent.[20][21] Increased recognition of the value of human–pet bonding was noted by Dr. Boris M. Levinson in 1961.[18] Levinson accidentally used animals in therapy with children when he left his dog alone with a nonverbal child, and upon returning, found the child talking to the dog.[22]

Physiological effects

Edward O. Wilson's (1984) biophilia hypothesis is based on the premise that our attachment to and interest in animals stems from the strong possibility that human survival was partly dependent on signals from animals in the environment indicating safety or threat.[23] The biophilia hypothesis suggests that if we see animals at rest or in a peaceful state, this may signal to us safety, security and feelings of well-being which in turn may trigger a state where personal change and healing are possible.

Six neurotransmitters that influence mood have been documented to release after a 15-minute or more interaction with animals.[24] Mirror neuron activity and disease-perception through olfactory (smelling) ability in dogs may also play important roles in helping dogs connect with humans during therapeutic encounters.[10]

Medical uses

Animals can be integrated into settings such as prisons, nursing homes, mental institutions,[25][26] and in the home.[15][27] The techniques used depend on the needs and condition of the patient. Assistance dogs can support certain life activities and help people navigate outside the home.[15][28]

Assessing whether a program is effective as far as its outcomes are concerned is easier when the goals are clear and are able to be specified. There are a range of goals for animal assisted therapy programs relevant to children and young people, including enhanced capacity to form positive relationships with others. It is understood that pets provide benefits to those with mental health conditions, but further research is required to test the nature and extent of this relationship with an animal as a pet and how it differs between pets, emotional support animals, service animals, and animal-assisted therapy.[29]

Cognitive rehabilitation treatment

Acquired Brain Injury survivors with cognitive impairments can benefit from animal-assisted therapy as part of a comprehensive rehabilitation treatment plan.[30]

Pets may promote kindness in children.

Pediatric care

Animals can be used as a distraction method when it comes to various situations or pain, and animals can also help bring happiness, pleasure, and entertainment to the pediatric population.[31] Animals can also help improve children's moods and reinforce positive behaviors while helping to decrease negative ones.[31]

Behavioral health

Therapists rely on techniques such as monitoring a child's behavior with the animal, their tone of voice, and indirect interviewing.[31][32] Animal-assisted therapy can be used in children with mental health problems, as a stand-alone treatment, or along with conventional methods.[32]

Hospital setting

Animal Assisted Therapy (AAT) is often used in hospital settings with children to try to improve their overall well-being and mood during[clarification needed].[33][34] Most commonly reported research results are decreased anxiety and pain within the pediatric population.[31][35][33] One area of pediatric hospital care in which the use of AAT has been studied is MRI procedures which can trigger negative emotions in children, causing them to move and require procedural sedation.[36] After AAT intervention, the anxiety levels of the subjects decreased significantly when compared to controls.[36] Dogs have been shown to increase comfort and decrease pain in pediatric palliative care.[37] Specific tactics have not been researched, but collective reviews of varied techniques displayed similar results of increased comfort reports by children and guardians.[37] Though meta-analysis has determined that children receiving AAT have seen a reduction in pain when compared to control groups, further quantitative research is needed to confirm this conclusion.[38]

Potential risks

Though AAT has existed and been in practice for decades, the lack of standardization creates potential risks for both the animals and humans involved.[39] As the use among pediatric populations continues to climb, another concern that has been raised about the use of animals in a hospital setting is the spread of germs.[40] Many children in hospital settings have weakened immune systems and are already at risk of contracting hospital-borne infections. It has been found that both the patients and dogs participating in therapy experienced changes to their biome after their sessions.[40] Whether these changes pose a long term benefit or risk has yet to be proven, and more in depth studies are needed to make this determination.[40] Additionally researchers are working to find an accurate way to determine the effects of AAT on both the service animal and the human participating in therapy.[41]

Prisons

Animal-assistance programs, such as cell dog programs, may be useful in prisons to relieve stress of the inmates and workers, or to provide other benefits, but further study is needed to confirm the effectiveness of such programs in these settings.[42] Internal file data reviews, anecdotal stories, and surveys of inmate and staff perceptions have been used to gauge the effectiveness of animal-assisted therapy in prisons, but these methods are limited and have resulted in an inadequate assessment.[43][44]

Researchers have, however, begun to find methods of gauging the effectiveness of prison animal programs (PAPs) by using Propensity Score Watching. One study using this method found that PAPs positively impact reductions in severe or violent infractions. A reduction in offenses statistically may reduce recidivism rates and increase former inmate job marketability and societal reintegration.[45]

Training and being responsible for an animal can foster empathy, emotional intelligence, communication, and self-control in inmates; however, the results of studies done so far must be taken with caution as the methodological quality of existing studies is limited.[46] PAPs also benefit the animals involved as many come from situations where they faced abuse, neglect or euthanasia.[47]

Nursing homes

The findings offer proof of the concept that canine-assisted therapies are feasible and can elicit positive quality-of-life experiences in institutionalized people with dementia.[48] Researchers and practitioners need to elucidate the theoretical foundations of animal-assisted therapies. The Lived Environment Life Quality Model may serve as a guide for client-centered, occupation-focused, and ecologically valid approaches to animal-assisted occupational therapy beyond people with dementia.[48]

When elderly people are transferred to nursing homes or long-term care facilities, they often become passive, agitated, withdrawn, depressed, and inactive because of the lack of regular visitors or the loss of loved ones.[49] Supporters of animal-assisted therapy say that animals can be helpful in motivating the patients to be active mentally and physically, keeping their minds sharp and bodies healthy.[11] A significant difference has been seen among verbal interactions among nursing home residents with a dog present.[3] Therapists or visitors who bring animals into their sessions at the nursing home are often viewed as less threatening, which increases the relationship between the therapist/visitor and patient.[50]

Occupational therapy

Occupational therapists can use animal assisted therapies to work on the child's motivation.[51] Some occupational therapy goals using animal assisted therapies include improving attention skills, social skills, participation in play, self-esteem, and reducing anxiety, loneliness, and isolation.[51]

Types

Various animal species are used in animal-assisted therapy. Individual animals are evaluated with strict criteria before being used. The criteria include appropriate size, age, aptitude, typical behaviors and the correct level of training. The most commonly used species are dogs and horses. Research has been published on dolphin therapy.[52]

Canine-assisted therapy

Main article: Therapy dog

In canine-assisted therapy, therapy dogs interact with patients in animal assisted interventions, to enhance therapeutic activities and well-being including the physical, cognitive, behavioral and socio-emotional functioning of clients.[53][54][55] Well-trained therapy dogs exhibit the behavior that human patients construe as friendly and welcoming.[55] They comfort patients via body contact.[54] Therapy dogs are also required to possess a calm temperament for accommodating the contact with unfamiliar clients while they serve as a source of comfort.[54] They promote patients engaging in interactions which can help patient improve motor skills and establish trusting relationship with others.[56] The interaction between patients and therapy dogs also aids reducing stressful and anxious feelings patients have.[54] Due to those benefits, canine-assisted therapy is used as a complement to other therapies to treat diagnosis such as post-traumatic stress disorder, attention deficit hyperactivity disorder, autism spectrum disorder, and dementia.[53][55][54]

Canine assistance can also be used in classroom for promoting the development of creative writing and living skills and the participation of children in group activities.[53] There are programs called canine-assisted reading programs which facilitate children with special educational needs. These programs utilize the calm, non-judgmental, happy characteristics of canines to let the process of reading become more meaningful and enjoyable for children. With these benefits, researchers suggest to incorporating dogs into assisting learning and educational programs.[53]

Dolphin therapy

Main article: Swimming with dolphins

Dolphin-assisted therapy refers to the controversial alternative medicine practice of swimming with dolphins. This form of therapy has been strongly criticized as having no long-term benefit,[57] and being based on flawed observations.[58] Psychologists have cautioned that dolphin-assisted therapy is not known to be effective for any condition and that it presents considerable risks to both human patients and the captive dolphins.[59] The child has a one-on-one session with a therapist in a marine park of some kind.[60] An ethical issue with data on dolphin-assisted therapy and the effectiveness of it is that most of the research is done by people who operate the dolphin-assisted therapy programs.[60]

Equine-related therapy

Main article: Equine-assisted therapy
Hippotherapy is promoted as a treatment for people with physical or mental challenges.

Equine-assisted therapy encompasses a range of treatments that involve activities with horses and other equines to promote human physical and mental health.

Therapeutic riding is used by disabled individuals who ride horses to relax, and to develop muscle tone, coordination, confidence, and well-being.[61] Equine-assisted psychotherapy (EAP) or Equine Facilitated Psychotherapy (EFP) is the use of equines to treat human psychological problems in and around an equestrian facility. The existing body of evidence does not justify the promotion and use of equine-related treatments for mental disorders.[62]

Pig therapy

Pigs have been used in various types of animal-assisted therapy to perform duties in facilities including airports,[63][64] hospitals,[65] nursing homes,[66] and special-needs schools, or as emotional support animals for individuals with conditions such as autism or anxiety[67] and veterans with PTSD.[68] Two well-known miniature pigs named Thunder and Bolt trained by children to certified animal therapy status have been put to work in a number of nursing homes, schools and a hospital.[65]

Therapy with other animals

See also: Therapy cat

Llamas are sometimes used in therapy.[69]

For patients that have allergies to animals that have fur, snakes have been used to provide emotional support.[69]

Effectiveness

Based on current research, there are many conditions that can benefit from animal-assisted therapy in diverse settings around the world. Those conditions include psychological disorder, developmental disorder, dementia, chronic pain, advanced heart failure, etc.[54][52] Animal-assisted therapy is commonly used for psychological disorders. Attention deficit hyperactivity disorder, autism spectrum disorder, post-traumatic stress disorder, and major depressive disorder are among the psychological disorders that can benefit from animal-assisted therapy.[32][55][54][52]

In recent decades, an increased amount of research indicates the social, psychological, and physiological benefits of animal assisted therapy in health and education field.[53] Although the effectiveness of animal-assisted therapy is still unclear due to the lack of clarity regarding the degree to which the animal itself contributes in the recovery process,[54] there is a growing awareness that the therapy may be effective in treating attention deficit hyperactivity disorder, post-traumatic stress disorder, autism spectrum disorder, and dementia.[70][71][72]

Attention deficit hyperactivity disorder

Children with attention deficit hyperactivity disorder (ADHD) may decrease behavioral issues and improve socialization skills with the intervention of animal-assisted therapy. Compared to children who received only cognitive-behavioral therapy, children who received both canine-assisted therapy and cognitive-behavioral therapy had reduced severity of ADHD symptoms.[32][55][54][52] However, the dog-assisted therapy did not relieve symptoms in long-term treatment.[55]

Post-traumatic stress disorder

Post-traumatic stress disorder (PTSD) is a psychological disorder affects people's mental health and has varying severity and forms.[54][2][page needed] It is often difficult to treat due to high drop-out rates and low responses to traditional psycho-therapeutic approaches and interventions.[7]

Animals have both direct and indirect effects on a mental health spectrum including biological, psychological, and social responses,[2] further targeting marked symptoms of post-traumatic stress disorder (i.e., re-experiencing, avoidance, changes in beliefs/feelings, and hyperarousal). Direct effects of animals include a decrease in anxiety and blood pressure while indirect effects result in increased social interactions and overall participation in everyday activities.[2]

Biologically, specific chemicals are released when observing human and animal interactions.[2] Similarly, dog assistance can potentially mediate oxytocin which effects social and physical well being and decrease blood pressure.[73][clarification needed] The psychological benefits of animals focus mainly on dog and human interactions, the reduction of anxiety and depressive symptoms, and increased resilience.[2] Animals in this capacity can further provide emotional and psychological assistance and support, addressing several of the disorder's symptoms.[2][6] The presence of an animal can alleviate intrusion symptoms by providing a reminder that there is no danger present.[6] Animals can further elicit positive emotions, targeting emotional numbing experiences.[6] Animal interactions also provide social benefits, providing companionship and alleviate feelings of loneliness and isolation through everyday routines and increased social interactions in public.[2][6]

The incorporation and involvement of animals dates back to the earliest forms of organized combat.[2] Dogs, in particular, were utilized in different capacities.[2] Ancient armies employed dogs as soldiers and companions which extended to modern combat including dogs as a crucial asset in communication, detection, and intimidation.[2] While a range of animals can be utilized, dogs and horses have been the principal species studied in practice.[2] Dog-assisted therapy and therapeutic horseback riding are non-invasive methods for treating post-traumatic stress disorder in veterans.[74][clarification needed]

Canines can easily integrate into a multitude of environments, are highly responsive to humans, and are very intelligent.[75][page needed] For those reasons, dogs are the species most commonly used in interventions.[8] Dogs are typically categorized according to the level of training received and the specific needs of the individual.[8] A service dog provides relief through specialized support related to a physical, mental, or psychological disability.[76] Emotional support animals solely provide psychological relief and do not require specialized training.[76] Therapy animals often provide additional support in a therapeutic environment by supporting counselors or therapists in their therapeutic duties.[76] While service dogs, emotional support animals, and therapy dogs can support the diverse symptoms that veterans, specifically bred and selected post-traumatic stress disorder service dogs, are trained and assigned to veterans with the disorder to support with daily life activities [77] as well as with emotional and mental health needs.[2]

Dogs provide subjective positive effects to veterans and serve as a compassionate reminder to veterans with post-traumatic stress disorder that danger is not present, creating a safe space for the veteran.[7] They are often sensitive to humans and have the ability to adapt their behavior accordingly by doing tasks such as preventing panic, waking a veteran from a nightmare, and nudging to help the veteran "stay in the present".[78] Dogs provide veterans with a nonjudgmental and safe environment that can help a veteran express feelings and process thoughts without interruption, criticism or advice.[79] Interactions, such as petting, playing and walking, with the dog can increase physical activity, reduce anxiety, and provide encouragement to stay in the present moment.[79] The interaction between dog and veterans supports social interactions for isolated veterans, reduces symptoms associated with the disorder such as depression and anxiety, and increases veterans' calmness.[80][clarification needed]

Similar to dogs, horses have been included in the treatment of veterans with post-traumatic stress disorder[8] by providing an accepting and nonjudgmental environment,[81] which further facilitates a veterans' ability to cope with symptoms.[81] Because horses are social animals, they are capable of creating and responding to relationships based on the veteran's energy, providing an opportunity for veterans to regain the ability to form trusting relationships.[82] Therapeutic work with horses varies from ground-based activities, mounted activities, or a combination of both.[8] In the therapeutic context, horses can promote cognitive reframing as well as an increase in the use of mindfulness practice.[81] While there is limited research and standardized instruments to measure the effects, veterans who have participated in pilot programs have better communication skills, self-awareness, and self-esteem,[81] promoting safety and support during the transition into civilian life.[83] Long term effects of equine based interventions with veterans include increased happiness, social support, and better sleep hygiene[8] because they are able to process information regarding their emotions and behaviors in a nonjudgmental space.[83]

While animal-assisted interventions can be effective, they have limitations due to limited research.[7] Furthermore, studies approved yield small sample sizes which limit the power to detect changes[81] as well as the specific tasks that are particularly helpful to veterans.[78] Animal-assisted therapy may also obstruct veterans from cultivating their own way of control over stressful situation.[medical citation needed]

Post-traumatic stress disorder in sexual assault survivors

Further information: Rape trauma syndrome

The disorder can develop when a person experiences a sexual assault or rape.[84][85] Sexual assault is the leading cause of post-traumatic stress disorder in women; an estimated 50% of women who were sexually assaulted develop the condition.[86] Animal-assisted therapy can be an effective in treating the trauma for survivors of sexual assault.[citation needed] The presence of dogs have been shown to improve communication between the survivor and the therapist and to decrease survivors' anxiety and fear-responses.[87] Animal-assisted therapy increases social interaction for those with the disorder.[88] Studies show that animal-assisted therapy leads to an overall reduction of symptoms including anger, depression, and dissociation in survivors of sexual assault.[89] Animal-assisted therapy has also been shown to reduce problem behavior and improves overall behavioral functioning for children survivors of sexual assault.[90]

Further research is needed to show the effectiveness of animal-assisted interventions in treating post-traumatic stress disorder for sexual assault survivors across varying demographics. Limitations in current research include small sample sizes and reliance on anecdotal evidence.

Autism spectrum disorder

Animal-assisted therapy may reduce the symptoms of autism spectrum disorder such as aggressiveness, irritability, are able to be distracted, and hyperactivity.[32] In one review,[32] five out of nine studies reviewed showed positive effects of therapeutic horseback riding on children with autism spectrum disorder. Canine assisted intervention provides a calmer environment by reducing the stress, irritation, and anxiety that children with autism spectrum disorder experience.[52][91] Playing with dogs increases the positive mood in children with autism spectrum disorder.[91] Animals also can serve as a social catalyst. In the presence of animals, children with autism spectrum disorder are more likely to engage in social interactions with humans.[91] However, the impact of animal-assisted therapy upon parent-child interaction is not clear.[32]

Dementia

Animal-assisted therapy encourages expressions of emotions and cognitive stimulation through discussions and reminiscing of memories while the patient bonds with the animal. Studies have found that animal assisted therapies (particularly using dogs) resulted in measurable quality of life improvements for patients with dementia.[48] Patients with dementia were also found to improve their social interactions and their scores on the Cohen-Mansfield Agitation Inventory.[92] Animal-assisted therapy has been shown to slightly reduce depressive symptoms in people with dementia in a 2019 systematic review.[93]

Limitations

There is limited scientific research on the use of the therapy among adults who have been sexually assaulted. While animals do tend to comfort survivors, animal therapy may not be the catalyst that provides positive success in therapy sessions. As mentioned above, adults tend not to focus as much on having an animal companion, and therefore, animal therapy cannot be attributed as the reason for success in those types of therapy sessions.[94] There are some ethical concerns that arise when applying animal therapy to younger survivors of sexual assault. For example, if a child is introduced to an animal that is not their pet, the application of animal therapy can cause some concerns. First of all, some children may not be comfortable with animals or may be frightened which could be avoided by asking permission to use animals in therapy. Second, a special bond is created between animal and child during animal therapy. Therefore, if the animal in question does not belong to the child, there may be some negative side effects when the child discontinues therapy. The child will have become attached to the animal, which does raise some ethical issues as far as subjecting a child to the disappointment and possible relapse that can occur after therapy discontinues.[95]

It is unclear to what degree the animal itself contributes in the recovery process.[54]

There are some concerns specific to dolphin-assisted therapy: First, it is potentially hazardous to the human patients, and it is harmful to the dolphins themselves; by taking dolphins out of their natural environment and putting them in captivity for therapy can be hazardous to their well-being.[59] Second, dolphin-assisted therapy has been strongly criticized as having no long term benefit,[57] and being based on flawed observations.[58] Third, psychologists have cautioned that dolphin assisted therapy is not effective for any known condition.[59]

There are concerns that people may become dependent on the animal and could interfere with the recovery process for PTSD.[96] People may feel as though they cannot do things on their own without the presence of the animal.

Ethical concerns

Though AAT has existed and been in practice for decades, the lack of standardization creates potential risks for both the animals and humans involved.[39] Due to the unclear structural guidelines on the use of animals in therapeutic settings, possible impacts to the animal include stress, injury, and health complications.[39][97] Research has shown that despite quality guidelines in place to ensure the health of the therapy animal, there are reports of negative interactions between human participant and therapy dogs.[97][98] These reports include mistreating and teasing the dogs by patients and staff at locations in which therapy is hosted.[97] In studies conducted, people with certain disabilities had to be excluded from the experiment due to increase in the stress of the therapy dog, and ultimately decline in overall wellbeing.[97] There is a question as to whether bringing animals into AAT settings where the client has a history of violence is ethical, or if the benefit outweighs the risk.[39]

Equine assisted therapy showed a need for more studies of equine behavior to obtain an understanding of stress signals from horses.[98] Through understanding the stress signals shown by horses, a safe and healthy experience during the therapy session can be held, by allowing handlers to minimize stress.[98] For therapy animals limited time for rest, multiple sessions, and long duration of sessions were linked to higher stress.[97][98][99][100] Assessing animals for signs of fatigue and stress can prevent negative experience for both humans and animals involved.[97][99][98][100] Animals used should be limited to a specific duration and number of sessions, as well as given access to proper environmental conditions, food, water, and rest.[97][98]

See also

References

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