Sympathy
Sympathy is the perception of, understanding of, and reaction to the distress or need of another life form. According to philosopher David Hume, this sympathetic concern is driven by a switch in viewpoint from a personal perspective to the perspective of another group or individual who is in need. Hume explained that this is the case because "the minds of all men are similar in their feelings and operations" and that "the motion of one communicates itself to the rest" so that as "affections readily pass from one person to another… they beget correspondent movements." Along with Hume, two other men, Adam Smith and Arthur Schopenhauer, worked to better define sympathy. Hume was mostly known for epistemology, Smith was known for his economic theory, and Schopenhauer for the philosophy of the will.  An American professor, Brene Brown, views sympathy as a way to stay out of touch with one's emotions. They attempt to make sense out of the situation and see it from the person receiving the sympathy's perception.

Etymology
The roots of the word sympathy are the Greek words sym, which means "together", and pathos, which refers to feeling or emotion. See sympathy § Etymology for more information.

Distinctions between sympathy and related concepts
The related word empathy is often used interchangeably with sympathy; with empathy meaning one is able to feel another's feelings.  Compassion and pity are also related concepts.

Causes
Prerequisites for feeling sympathy include: attention to a subject, believing that a subject is in a state of need, and understanding the context of what is occurring in a subject's life. To feel sympathy for a person or group, you must first pay attention to them. Distractions severely limit the ability to produce strong affective responses. When not distracted, people can attend to and respond to a variety of emotional subjects and experiences. Attention facilitates the experience of sympathy; without giving undivided attention sympathy cannot be experienced in many situations.
The perceived need of an individual/group elicits sympathy. Different states of need (such as perceived vulnerability or pain) require different sorts of human reactions, including those that range from attention to sympathy. For example, a person with cancer might draw a stronger feeling of sympathy than a person with a cold. Depending on the circumstance of the subject, the way that sympathy is expressed can vary because of the given situation. Gestures of sympathy may also be seen as a social response to a crisis.Opinions about human deservingness, interdependence, and vulnerability motivate sympathy. A person who seems "deserving" of aid is more likely to be helped. A belief in human interdependence fuels sympathetic behavior.
Sympathy is also believed to be based on the principle of the powerful helping the vulnerable (young, elderly, sick). This desire to help the vulnerable has been suggested by many, one being the American Psychological Association, to stem from paternalistic motives to protect and aid children and the weak. In this theory, people help other people in general by generalizing the maternal as well as the paternal instincts to care for their own children or family.
Individual moods, previous experiences, social connections, novelty, salience, and spatial proximity also influence the experience of sympathy. Individuals experiencing positive mood states and people who have similar life experiences are more likely to express sympathy to those who are being sympathized with.
People in spatial or geographic proximity (such as neighbors and citizens of a given country) are more likely to experience sympathy towards each other. Social proximity follows the same pattern: Members of certain groups (e.g. racial groups) are more sympathetic to people who are also members of the group. Social proximity is linked with in-group/out-group status. People within the same group are interconnected and share successes and failures and therefore experience more sympathy towards each other than to out-group members, or social outsiders.
New and emotionally provoking situations also heighten empathic emotions, such as sympathy. People seem to habituate to events that are similar in content and type and strength of emotion. The first horrific event that is witnessed will elicit a greater sympathetic response compared to the subsequent experiences of the same horrific event.

Evolutionary origins
The evolution of sympathy is tied to the development of social intelligence: a broad range of behaviors and their associated cognitive skills, such as pair bonding, the creation of social hierarchies, and alliance formation. Researchers theorize that empathic emotions, or those relating to the emotions of others, arose due to reciprocal altruism, mother–child bonding, and the need to accurately estimate the future actions of conspecifics. Empathic emotions emerged from the need to create relationships that were mutually beneficial and to better understand the emotions of others that could avert danger or stimulate positive outcomes.Small groups of socially dependent individuals may develop empathic concerns, and later sympathy, if certain prerequisites are met. The individuals in this community must have a long enough lifespan to encounter several opportunities to react with sympathy. Parental care relationships, alliances during conflicts, and the creation of social hierarchies are associated with the onset of sympathy in human interactions. Sympathetic behavior originally came about during dangerous situations, such as predator sightings, and moments when aid was needed for the sick and/or wounded. The evolution of sympathy as a social catalyst can be seen in both primate species and in human development.

Communication
Verbal communication is one way individuals communicate feelings of sympathy. People can express sympathy by addressing the emotions being felt by themselves and others involved and by acknowledging the current environmental conditions for why sympathy is the appropriate reaction.
Nonverbal communication includes speech intonation, facial expression, body motions, person-to-person physical contact, nonverbal vocal behavior, how far people position themselves in relation to each other, posture, and appearance. Such forms of expression can convey messages related to emotion as well as opinions, physical states (fatigue), and understanding. People produce emotion-specific facial expressions that are often the same from culture to culture and are often reproduced by observers, which facilitates the observers' own understanding of the emotion and/or situation. There are six universal emotions: happiness, sadness, fear, surprise, disgust, and anger.
Nonverbal communication cues are often subconscious and difficult to control. Deliberate regulation of emotion and nonverbal expression is often imperfect. Nonverbal gestures and facial expressions are also generally better understood by observers than by the person experiencing them first hand.Communicating using physical touch has the unique ability to convey affective information upon contact. The interpretation of this information is context-sensitive. The touch of the hand on the shoulder during a funeral might be the fastest method of conveying sympathy. Patting a person on their back, arms, or head for a few seconds can effectively convey feelings of sympathy between people. Nonverbal communication seems to provide a more genuine communication of sympathy, because it is difficult to control nonverbal expressions and so difficult to be deliberately insincere in that medium. The combination of verbal and nonverbal communication facilitates the acknowledgment and comprehension of sympathy.

Human behavior
People make decisions by weighing costs against potential outcomes. Research on decision-making distinguishes two mechanisms, often labeled "System 1" (or "gut") and "System 2" (or "head"). System 1 uses affective cues to dictate decisions, whereas System 2 is based in logic and reason. For example, deciding on where to live based on how the new home feels would be a System 1 decision, whereas deciding based on the property value and personal savings would be a System 2 decision.
Sympathy is a System 1 agent. It provides a means of understanding another person's experience or situation, good or bad, with a focus on their individual well-being. It is often easier to make decisions based on emotional information, because all humans have general understanding of emotions. It is this understanding of emotions that allows people to use sympathy to make their decisions.
Sympathy helps to motivate philanthropic, or aid-giving, behavior (e.g. donations, community service). The choice to donate, and the subsequent decision of how much to give, can be separated into two emotion-driven decision-making processes: Mood management, or how people act to maintain their moods, influences the initial decision to donate because of selfish concerns (to avoid regret or feel better). However, how a person feels about the deservingness of the recipient determines how much to donate. Human sympathy in donation behavior can influence the amount of aid given to people and regions that are in need. Increasing how emotional a description is, presenting individual cases instead of large groups, and using less information and numerical data can positively influence giving behavior.Sympathy also plays a role in maintaining social order. Judging people's character helps to maintain social order, making sure that those who are in need receive the appropriate care. The notion of interdependence fuels sympathetic behavior; such behavior is self-satisfying because helping someone who is connected to you through some way (family, social capital) often results in a personal reward (social, monetary, etc.). Regardless of selflessness or selfishness, sympathy facilitates the cycle of give and take that is necessary for maintaining a functional society.

Healthcare
Sympathy also impacts how doctors, nurses, and other members of society think about and treat people with different diseases and conditions. The level of sympathy exhibited by health care providers corresponds to patient characteristics and disease type.  One factor that influences sympathy is controllability: the degree to which the afflicted individual could have avoided contracting the disease or medical condition. For example, people express less sympathy toward individuals who had control during the event when they acquired HIV. It is less likely that homosexual men and prostitute women who have contracted HIV or AIDS will receive the same amount of empathy as heterosexual men and women who contract HIV or AIDS.
Sympathy in health-related decision making is heavily based on disease stigma. Disease stigma can lead to discrimination in the workplace and in insurance coverage. High levels of stigma are also associated with social hostility. Several factors contribute to the development of disease stigmas, including the disease's time course, severity, and the dangers that the disease might pose to others. Sexual orientation of individual patients has also been shown to affect stigma levels in the case of HIV diagnoses. Sympathy is generally associated with low levels of disease stigma.
Sympathy for HIV patients is related to increased levels of knowledge regarding HIV and a lower likelihood of avoiding individuals with HIV.

Neuroscience perspectives
Social and emotional stimuli related to the well-being of another person can be studied with technology that tracks brain activity (such as Electroencephalograms and functional Magnetic Resonance Imaging). Amygdala and insula activation occur when a person experiences emotions, such as fear and disgust respectively. Primary motor regions also activate during sympathy. This could be caused by humans' motor reactions to emotional faces (reflecting the expressions on their own faces) which seems to help people better understand the other person's emotion. Researchers also suggest that the neural mechanisms that are activated when personally experiencing emotions are also activated when viewing another person experiencing the same emotions (via mirror neurons). Pain seems to activate a region known as the cingulate cortex, in addition to the activation of the neural mechanisms as mentioned earlier. The temporal parietal junction, orbitofrontal cortex, and ventral striatum are also thought to play a role in the production of emotion.Generally, empathic emotions (including sympathy) require the activation of top-down and bottom-up activity. Top-down activity refers to cognitive processes that originate from the frontal lobe and require conscious thought whereas bottom-up activity begins from sensation of stimuli in the environment. From the sensory level, people sense and experience the emotional cues of another. At the same time, top-down responses make sense of the emotional inputs streaming in and apply motive and environmental influence analyses to better understand the situation. Top-down processes include attention to emotion and emotion regulation.

Child development
Sympathy is a stage in social and moral development. It generally arises when a child is between two and three years old, although some instances of empathic emotion can be seen as early as 18 months. Basic sharing of emotions, a precursor for sympathy, can be seen in infants. For example, babies will often begin to cry when they hear another baby crying nearby. This suggests the infant can recognize emotional cues in its environment, even if it cannot fully comprehend the emotion. Another milestone in child development is the ability to mimic facial expressions. Both of these processes act on sensory and perceptual pathways; executive functioning for empathic emotions does not begin during these early stages. Because of this, children and young adults experience another person's pain differently: Young children tend to be negatively aroused more often in comparison to the older subjects.Sympathy can elicit prosocial and altruistic behaviour. Altruistic behaviour happens when people who experience emotional reactions consistent with the state of another person feel "other-oriented" (inclined to help other people in need or distressed).
People are more inclined to help those in need when they cannot easily escape the situation. If exit is easy, an individual is likely to reduce their own distress (from sympathy; feeling bad) by avoiding contact with the other(s) in need. However sympathy is still experienced when it is easy to escape the situation, suggesting that humans are "other oriented" and altruistic.Sympathy can be used in altruistic situations. This can apply when the sympathy would benefit others at a cost to another individual. This can be the case when it comes to parenting. Parenting styles (specifically level of affection) can influence the development of sympathy. Prosocial and moral development extends into adolescence and early adulthood as humans learn to better assess and interpret the emotions of others. Prosocial behaviours have been observed in children between one and two years old. It is difficult to measure emotional responses in children that young by means of self-report methods as they are not as able to articulate such responses as well as adults can.

Theory of mind
The development of theory of mind—the ability to view the world from perspectives of other people—is strongly associated with the development of sympathy and other complex emotions. These emotions are called "complex" because they involve more than just one's own emotional states; complex emotions involve the interplay of multiple people's varying and fluctuating thoughts and emotions within given contexts. The ability to experience vicarious emotion, or to imagine how another person feels, is essential for empathic concern. Moral development is similarly tied to the understanding of outside perspectives and emotions. Moral reasoning has been divided into five categories, beginning with a hedonistic self-orientation and ending with an internalized sense of needs of others, including empathic emotions.

Innate feature
One study sought to determine whether sympathy demonstrated by children was solely for personal benefit, or if the emotion was an innate part of development. Parents, teachers, and 1,300 children (aged six and seven) were interviewed regarding each child's behavior. Over the course of one year, questionnaires were filled out regarding the progress and behavior of each child. This was followed by an interview. The study concluded that children develop sympathy and empathy independently of parental guidance. The study also found that girls are more sympathetic, prosocial, and morally motivated than boys. Prosocial behavior has been noted in children as young as twelve months when showing and giving toys to their parents, without promoting or being reinforced by praise. Levels of prosocial behavior increased with sympathy in children with low moral motivation, as it reflects the link between innate abilities and honing them with the guidance of parents and teachers.

See also
Superficial sympathy
Altruism
Condolence
Ishin-denshin, Japanese for sympathy (Some Japanese believe their country to uniquely possess this universal human trait)
Mimpathy
Moral emotions

References
Further reading
Decety, J. and Ickes, W. (Eds.) (2009). The Social Neuroscience of Empathy. Cambridge: MIT Press, Cambridge.
Decety, J. and Batson, C.D. (Eds.) (2007). Interpersonal Sensitivity: Entering Others' Worlds. Hove: Psychology Press.
Eisenberg, N., & Strayer, J. (1987). Empathy and its Development. Cambridge: Cambridge University Press.
Lamm, C.; Batson, C.D.; Decety, J. (2007). "The neural substrate of human empathy: effects of perspective-taking and cognitive appraisal". Journal of Cognitive Neuroscience. 19 (1): 42–58. CiteSeerX 10.1.1.511.3950. doi:10.1162/jocn.2007.19.1.42. PMID 17214562. S2CID 2828843.

External links

Mirrored emotion by Jean Decety from the University of Chicago.
"Empathy and Sympathy in Ethics". Internet Encyclopedia of Philosophy.