Apathy, also referred to as indifference, is a lack of feeling, emotion, interest, or concern about something. It is a state of indifference, or the suppression of emotions such as
concern,
excitement
Excitation, excite, exciting, or excitement may refer to:
* Excitation (magnetic), provided with an electrical generator or alternator
* ''Exite'', a series of racing video games published by Nintendo starting with ''Excitebike''
* Excite (web port ...
,
motivation
Motivation is an mental state, internal state that propels individuals to engage in goal-directed behavior. It is often understood as a force that explains why people or animals initiate, continue, or terminate a certain behavior at a particul ...
, or
passion. An apathetic individual has an absence of interest in or concern about emotional, social, spiritual, philosophical, virtual, or physical life and the world. Apathy can also be defined as a person's lack of
goal orientation.
Apathy falls in the less extreme spectrum of
diminished motivation, with
abulia
In neurology, abulia, or aboulia (from , meaning "will"),Bailly, A. (2000). Dictionnaire Grec Français, Éditions Hachette. refers to a lack of will or initiative and can be seen as a disorder of diminished motivation. Abulia falls in the midd ...
in the middle and
akinetic mutism being more extreme than both apathy and abulia.
[Marin, R. S., & Wilkosz, P. A. (2005)]
Disorders of diminished motivation
. Journal of Head Trauma Rehabilitation, 20(4), 377-388.
The apathetic may lack a sense of purpose, worth, or
meaning in their life. People with severe apathy tend to have a lower quality of life and are at a higher risk for mortality and early
institutionalization.
They may also exhibit insensibility or
sluggishness.
In
positive psychology
Positive psychology is the scientific study of conditions and processes that contribute to positive psychological states (e.g., contentment, joy), well-being, Positive psychology of relationships, positive relationships, and positive institutio ...
, apathy is described as a result of the individuals' feeling they do not possess the level of skill required to confront a challenge (i.e. "
flow"). It may also be a result of perceiving no challenge at all (e.g., the challenge is irrelevant to them, or conversely, they have
learned helplessness
Learned helplessness is the behavior exhibited by a subject after enduring repeated aversive stimuli beyond their control. It was initially thought to be caused by the subject's acceptance of their powerlessness, by way of their discontinuing att ...
). Apathy is usually felt only in the short term, but sometimes it becomes a long-term or even lifelong state, often leading to deeper social and psychological issues.
Apathy should be distinguished from
reduced affect display
Reduced affect display, sometimes referred to as emotional blunting or emotional numbing, is a condition of reduced emotional reactivity in an individual. It manifests as a failure to express feelings either verbally or nonverbally, especially w ...
, which refers to reduced
emotional expression
An emotional expression is a behavior that communicates an emotional state or attitude. It can be verbal or nonverbal, and can occur with or without self-awareness. Emotional expressions include facial movements like smiling or scowling, simple ...
but not necessarily reduced emotion.
Pathological apathy, characterized by extreme forms of apathy, is now known to occur in many different brain disorders,
including neurodegenerative conditions often associated with
dementia
Dementia is a syndrome associated with many neurodegenerative diseases, characterized by a general decline in cognitive abilities that affects a person's ability to perform activities of daily living, everyday activities. This typically invo ...
such as
Alzheimer's disease
Alzheimer's disease (AD) is a neurodegenerative disease and the cause of 60–70% of cases of dementia. The most common early symptom is difficulty in remembering recent events. As the disease advances, symptoms can include problems wit ...
,
Parkinson's disease
Parkinson's disease (PD), or simply Parkinson's, is a neurodegenerative disease primarily of the central nervous system, affecting both motor system, motor and non-motor systems. Symptoms typically develop gradually and non-motor issues become ...
,
and psychiatric disorders such as
schizophrenia
Schizophrenia () is a mental disorder characterized variously by hallucinations (typically, Auditory hallucination#Schizophrenia, hearing voices), delusions, thought disorder, disorganized thinking and behavior, and Reduced affect display, f ...
. Although many patients with pathological apathy also have depression, several studies have shown that the two syndromes are dissociable: apathy can occur independent of depression and vice versa.
Etymology
Although the word ''apathy'' was first used in 1594 and is derived from the
Greek (''
apatheia''), from (''apathēs'', "without feeling" from ''a-'' ("without, not") and ''
pathos
Pathos appeals to the emotions and ideals of the audience and elicits feelings that already reside in them. ''Pathos'' is a term most often used in rhetoric (in which it is considered one of the three modes of persuasion, alongside ethos and ...
'' ("emotion")), it is important not to confuse the two terms. Also meaning "absence of passion," "apathy" or "insensibility" in Greek, the term ''apatheia'' was used by the
Stoics to signify a (desirable) state of indifference toward events and things that lie outside one's control (that is, according to their philosophy, all things exterior, one being only responsible for one's own representations and judgments). In contrast to ''apathy'', ''apatheia'' is considered a
virtue
A virtue () is a trait of excellence, including traits that may be morality, moral, social, or intellectual. The cultivation and refinement of virtue is held to be the "good of humanity" and thus is Value (ethics), valued as an Telos, end purpos ...
, especially in
Orthodox monasticism. In the
Philokalia the word ''dispassion'' is used for ''apatheia'', so as not to confuse it with ''apathy''.
History and other views
Christians
A Christian () is a person who follows or adheres to Christianity, a monotheistic Abrahamic religion based on the life and teachings of Jesus Christ. Christians form the largest religious community in the world. The words '' Christ'' and ''C ...
have historically condemned apathy as a deficiency of love and devotion to
God
In monotheistic belief systems, God is usually viewed as the supreme being, creator, and principal object of faith. In polytheistic belief systems, a god is "a spirit or being believed to have created, or for controlling some part of the un ...
and his works. This interpretation of apathy is also referred to as
Sloth
Sloths are a Neotropical realm, Neotropical group of xenarthran mammals constituting the suborder Folivora, including the extant Arboreal locomotion, arboreal tree sloths and extinct terrestrial ground sloths. Noted for their slowness of move ...
and is listed among the
Seven Deadly Sins
The seven deadly sins (also known as the capital vices or cardinal sins) function as a grouping of major vices within the teachings of Christianity. In the standard list, the seven deadly sins according to the Catholic Church are pride, greed ...
.
Clemens Alexandrinus used the term to draw to gnostic Christianity
philosopher
Philosophy ('love of wisdom' in Ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, Value (ethics and social sciences), value, mind, and language. It is a rational an ...
s who aspired after virtue.
The modern concept of apathy became more well known after
World War I
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
, when it was one of the various forms of "
shell shock", now better known as
post-traumatic stress disorder
Post-traumatic stress disorder (PTSD) is a mental disorder that develops from experiencing a Psychological trauma, traumatic event, such as sexual assault, domestic violence, child abuse, warfare and its associated traumas, natural disaster ...
(PTSD). Soldiers who lived in the trenches amidst the bombing and machine gun fire, and who saw the battlefields strewn with dead and maimed comrades, developed a sense of disconnected numbness and indifference to normal
social interaction
A social relation is the fundamental unit of analysis within the social sciences, and describes any voluntary or involuntary interpersonal relationship between two or more conspecifics within and/or between groups. The group can be a language or ...
when they returned from combat.
In 1950, US novelist
John Dos Passos
John Roderigo Dos Passos (; January 14, 1896 – September 28, 1970) was an American novelist, most notable for his U.S.A. (trilogy), ''U.S.A.'' trilogy.
Born in Chicago, Dos Passos graduated from Harvard College in 1916. He traveled widely as a ...
wrote: "Apathy is one of the characteristic responses of any living organism when it is subjected to stimuli too intense or too complicated to cope with. The cure for apathy is
comprehension."
Social origin
Apathy has been socially viewed as worse than things such as hate or anger. Not caring whatsoever, in the eyes of some, is even worse than having distaste for something. Author
Leo Buscaglia is quoted as saying "I have a very strong feeling that the opposite of love is not hate-it's apathy. It's not giving a damn."
Helen Keller stated that apathy is the "worst of them all" when it comes to the various evils in the world. French social commentator and political thinker
Charles de Montesquieu stated that "the tyranny of a prince in an oligarchy is not so dangerous to the public welfare as the apathy of a citizen in the democracy."
In the school system
Apathy in students, especially those in high school, is a growing problem. It causes teachers to lower standards in order to try to engage their students.
Apathy in schools is most easily recognized by students being unmotivated or, quite commonly, being motivated by outside factors. For example, when asked about their motivation for doing well in school, fifty percent of students cited outside sources such as "college acceptance" or "good grades". On the contrary, only fourteen percent cited "gaining an understanding of content knowledge or learning subject material" as their motivation to do well in school. As a result of these outside sources, and not a genuine desire for knowledge, students often do the minimum amount of work necessary to get by in their classes.
This then leads to average grades and test grades but no real grasping of knowledge.
Many students cited that "assignments/content was irrelevant or meaningless" and that this was the cause of their apathetic attitudes toward their schooling, leading to teacher and parent frustration. Other causes of apathy in students include situations within their home life, media influences, peer influences, school struggles and failures. Some of the signs of apathetic students include declining grades, skipping classes, routine illness, and behavioral changes both in school and at home. In order to combat this, teachers have to be aware that students have different motivation profiles; i.e. they are motivated by different factors or stimuli.
Bystander
Also known as the
bystander effect, bystander apathy occurs when, during an emergency, those standing by do nothing to help but instead stand by and watch. Sometimes this can be caused by one bystander observing other bystanders and imitating their behavior. If other people are not acting in a way that makes the situation seem like an emergency that needs attention, often other bystanders will act in the same way.
The diffusion to responsibility can also be to blame for bystander apathy. The more people that are around in emergency situations, the more likely individuals are to think that someone else will help so they do not need to. This theory was popularized by social psychologists in response to the 1964
Kitty Genovese murder. The murder took place in New York and the victim, Genovese, was stabbed to death as bystanders reportedly stood by and did nothing to stop the situation or even call the police.
Latané and
Darley are the two psychologists who did research on this theory. They performed different experiments that placed people into situations where they had the opportunity to intervene or do nothing. The individuals in the experiment were either by themselves, with a stranger(s), with a friend, or with a confederate. The experiments ultimately led them to the conclusion that there are many social and situational factors that are behind whether a person will react in an emergency situation or simply remain apathetic to what is occurring.
Measurement
Several different questionnaires and clinical interview instruments have been used to measure pathological apathy or, more recently, apathy in healthy people.
Apathy Evaluation Scale
Developed by Robert Marin in 1991, the Apathy Evaluation Scale (AES) was the first method developed to measure apathy in clinical populations. Centered around evaluation, the scale can either be self-informed or other-informed. The three versions of the test include self, informant such as a family member, and clinician. The scale is based around questionnaires that ask about topics including interest, motivation, socialization, and how the individual spends their time. The individual or informant answers on a scale of "not at all", "slightly", "somewhat" or "a lot". Each item on the evaluation is created with positive or negative syntax and deals with cognition, behavior, and emotion. Each item is then scored and, based on the score, the individual's level of apathy can be evaluated.
Apathy Motivation Index
The Apathy Motivation Index (AMI) was developed to measure different dimensions of apathy in healthy people.
Factor analysis
Factor analysis is a statistical method used to describe variability among observed, correlated variables in terms of a potentially lower number of unobserved variables called factors. For example, it is possible that variations in six observe ...
identified three distinct axes of apathy: behavioural, social and emotional.
The AMI has since been used to examine apathy in patients with
Parkinson's disease
Parkinson's disease (PD), or simply Parkinson's, is a neurodegenerative disease primarily of the central nervous system, affecting both motor system, motor and non-motor systems. Symptoms typically develop gradually and non-motor issues become ...
who, overall, showed evidence of behavioural and social apathy, but not emotional apathy. Patients with
Alzheimer's disease
Alzheimer's disease (AD) is a neurodegenerative disease and the cause of 60–70% of cases of dementia. The most common early symptom is difficulty in remembering recent events. As the disease advances, symptoms can include problems wit ...
,
Parkinson's disease
Parkinson's disease (PD), or simply Parkinson's, is a neurodegenerative disease primarily of the central nervous system, affecting both motor system, motor and non-motor systems. Symptoms typically develop gradually and non-motor issues become ...
, subjective cognitive impairment and
limbic encephalitis have also been assessed using the AMI, and their self-reports of apathy were compared with those of caregivers using the AMI caregiver scale.
Dimensional Apathy Scale
The Dimensional Apathy Scale (DAS) is a multidimensional apathy instrument for measuring subtypes of apathy in different clinical populations and healthy adults. It was developed using
factor analysis
Factor analysis is a statistical method used to describe variability among observed, correlated variables in terms of a potentially lower number of unobserved variables called factors. For example, it is possible that variations in six observe ...
, quantifying Executive apathy (lack of motivation for planning, organising and attention), Emotional apathy (emotional indifference, neutrality, flatness or blunting) and Initiation apathy (lack of motivation for self-generation of thought/action). There is a self-rated version of the DAS
and an informant/carer-rated version of the DAS.
Further a clinical brief DAS has also been developed.
It has been validated for use in
stroke
Stroke is a medical condition in which poor cerebral circulation, blood flow to a part of the brain causes cell death. There are two main types of stroke: brain ischemia, ischemic, due to lack of blood flow, and intracranial hemorrhage, hemor ...
,
Huntington's disease
Huntington's disease (HD), also known as Huntington's chorea, is an incurable neurodegenerative disease that is mostly Genetic disorder#Autosomal dominant, inherited. It typically presents as a triad of progressive psychiatric, cognitive, and ...
,
motor neurone disease,
Multiple Sclerosis
Multiple sclerosis (MS) is an autoimmune disease resulting in damage to myelinthe insulating covers of nerve cellsin the brain and spinal cord. As a demyelinating disease, MS disrupts the nervous system's ability to Action potential, transmit ...
,
dementia
Dementia is a syndrome associated with many neurodegenerative diseases, characterized by a general decline in cognitive abilities that affects a person's ability to perform activities of daily living, everyday activities. This typically invo ...
,
Parkinson's disease
Parkinson's disease (PD), or simply Parkinson's, is a neurodegenerative disease primarily of the central nervous system, affecting both motor system, motor and non-motor systems. Symptoms typically develop gradually and non-motor issues become ...
and
schizophrenia
Schizophrenia () is a mental disorder characterized variously by hallucinations (typically, Auditory hallucination#Schizophrenia, hearing voices), delusions, thought disorder, disorganized thinking and behavior, and Reduced affect display, f ...
, showing to differentiate profiles of apathy subtypes between these conditions.
Medical aspects
Depression
Mental health journalist and author John McManamy argues that although
psychiatrist
A psychiatrist is a physician who specializes in psychiatry. Psychiatrists are physicians who evaluate patients to determine whether their symptoms are the result of a physical illness, a combination of physical and mental ailments or strictly ...
s do not explicitly deal with the condition of apathy, it is a psychological problem for some
depressed people, in which they get a sense that "nothing matters", the "lack of will to go on and the inability to care about the consequences".
[".] He describes depressed people who "...cannot seem to make
hemselvesdo anything", who "can't complete anything", and who do not "feel any excitement about seeing loved ones".
He acknowledges that the ''
Diagnostic and Statistical Manual of Mental Disorders
The ''Diagnostic and Statistical Manual of Mental Disorders'' (''DSM''; latest edition: ''DSM-5-TR'', published in March 2022) is a publication by the American Psychiatric Association (APA) for the classification of mental disorders using a com ...
'' does not discuss apathy.
In a ''
Journal of Neuropsychiatry and Clinical Neurosciences'' article from 1991, Robert Marin, MD, claimed that pathological apathy occurs due to brain damage or neuropsychiatric illnesses such as Alzheimer's, Parkinson's, Huntington's disease, or stroke. Marin argues that apathy is a syndrome associated with many different brain disorders.
This has now been shown to be the case across a range of neurological and psychiatric conditions.
A review article by Robert van Reekum, MD, et al. from the
University of Toronto
The University of Toronto (UToronto or U of T) is a public university, public research university whose main campus is located on the grounds that surround Queen's Park (Toronto), Queen's Park in Toronto, Ontario, Canada. It was founded by ...
in the ''Journal of Neuropsychiatry'' (2005) claimed that an obvious relationship between depression and apathy exists in some populations. However, although many patients with depression also have apathy, several studies have shown that apathy can occur independently of depression, and vice versa.
Apathy can be associated with depression, a manifestation of negative disorders in schizophrenia, or a symptom of various somatic and neurological disorders.
Sometimes apathy and depression are viewed as the same thing, but actually take different forms depending on someone's mental condition.
Alzheimer's disease
Depending upon how it has been measured, apathy affects 19–88% percent of individuals with
Alzheimer's disease
Alzheimer's disease (AD) is a neurodegenerative disease and the cause of 60–70% of cases of dementia. The most common early symptom is difficulty in remembering recent events. As the disease advances, symptoms can include problems wit ...
(mean prevalence of 49% across different studies).
It is a neuropsychiatric symptom associated with functional impairment. Brain imaging studies have demonstrated changes in the
anterior cingulate cortex,
orbitofrontal cortex
The orbitofrontal cortex (OFC) is a prefrontal cortex region in the frontal lobes of the brain which is involved in the cognitive process of decision-making. In non-human primates it consists of the association cortex areas Brodmann area 11, 1 ...
,
dorsolateral prefrontal cortex
The dorsolateral prefrontal cortex (DLPFC or DL-PFC) is an area in the prefrontal cortex of the primate brain. It is one of the most recently derived parts of the human brain. It undergoes a prolonged period of maturation which lasts into adulthoo ...
and ventral striatum in Alzheimer's patients with apathy.
Cholinesterase inhibitors, used as the first line of treatment for the cognitive symptoms associated with dementia, have also shown some modest benefit for behavior disturbances such as apathy. The effects of
donepezil,
galantamine and
rivastigmine have all been assessed but, overall, the findings have been inconsistent, and it is estimated that apathy in ~60% of Alzheimer's patients does not respond to treatment with these drugs.
Methylphenidate
Methylphenidate, sold under the brand names Ritalin ( ) and Concerta ( ) among others, is a central nervous system (CNS) stimulant used in the treatment of attention deficit hyperactivity disorder (ADHD) and narcolepsy. It may be taken Oral adm ...
, a dopamine and noradrenaline reuptake blocker, has received increasing interest for the treatment of apathy. Management of apathetic symptoms using methylphenidate has shown promise in randomized placebo controlled trials of Alzheimer's patients. A phase III multi-centered randomized placebo-controlled trial of methylphenidate for the treatment of apathy has reported positive effects.
Parkinson's disease
Overall, ~40% of
Parkinson's disease
Parkinson's disease (PD), or simply Parkinson's, is a neurodegenerative disease primarily of the central nervous system, affecting both motor system, motor and non-motor systems. Symptoms typically develop gradually and non-motor issues become ...
patients suffer from apathy, with prevalence rates varying from 16 to 62%, depending on the study.
Apathy is increasingly recognized to be an important non-motor symptom in Parkinson's disease. It has a significant negative impact on quality of life. In some patients, apathy can be improved by
dopaminergic
Dopaminergic means "related to dopamine" (literally, "working on dopamine"), a common neurotransmitter. Dopaminergic substances or actions increase dopamine-related activity in the brain.
Dopaminergic pathways, Dopaminergic brain pathways facil ...
medication. There is also some evidence for a positive effect of
cholinesterase inhibitors such as
Rivastigmine on apathy. Diminished sensitivity to reward may be a key component of the syndrome in Parkinson's disease.
Frontotemporal dementia
Pathological apathy is considered to be one of the diagnostic features of behavioural variant
frontotemporal dementia
Frontotemporal dementia (FTD), also called frontotemporal degeneration disease or frontotemporal neurocognitive disorder, encompasses several types of dementia involving the progressive degeneration of the brain's frontal lobe, frontal and tempor ...
, occurring in the majority of people with this condition. Both hypersensitivity to effort as well as blunting of sensitivity to reward may be components of behavioural apathy in
frontotemporal dementia
Frontotemporal dementia (FTD), also called frontotemporal degeneration disease or frontotemporal neurocognitive disorder, encompasses several types of dementia involving the progressive degeneration of the brain's frontal lobe, frontal and tempor ...
.
Anxiety
While apathy and
anxiety
Anxiety is an emotion characterised by an unpleasant state of inner wikt:turmoil, turmoil and includes feelings of dread over Anticipation, anticipated events. Anxiety is different from fear in that fear is defined as the emotional response ...
may appear to be separate, and different, states of being, there are many ways that severe anxiety can cause apathy. First, the emotional fatigue that so often accompanies severe anxiety leads to one's emotions being worn out, thus leading to apathy. Second, the low
serotonin
Serotonin (), also known as 5-hydroxytryptamine (5-HT), is a monoamine neurotransmitter with a wide range of functions in both the central nervous system (CNS) and also peripheral tissues. It is involved in mood, cognition, reward, learning, ...
levels associated with anxiety often lead to less passion and interest in the activities in one's life, which can be seen as apathy. Third, negative thinking and distractions associated with anxiety can ultimately lead to a decrease in one's overall happiness which can then lead to an apathetic outlook about one's life. Finally, the difficulty enjoying activities that individuals with anxiety often face can lead to them doing these activities much less often and can give them a sense of apathy about their lives. Even behavioral apathy may be found in individuals with anxiety in the form of them not wanting to make efforts to treat their anxiety.
Other
Often, apathy is felt after witnessing horrific acts, such as the killing or maiming of people during a
war, e.g.
posttraumatic stress disorder
Post-traumatic stress disorder (PTSD) is a mental disorder that develops from experiencing a Psychological trauma, traumatic event, such as sexual assault, domestic violence, child abuse, warfare and its associated traumas, natural disaster ...
. It is also known to be a distinct psychiatric syndrome that is associated with many conditions, more prominently recognized in the elderly, some of which are:
CADASIL syndrome,
depression,
Alzheimer's disease
Alzheimer's disease (AD) is a neurodegenerative disease and the cause of 60–70% of cases of dementia. The most common early symptom is difficulty in remembering recent events. As the disease advances, symptoms can include problems wit ...
,
Chagas disease,
Creutzfeldt–Jakob disease,
dementia
Dementia is a syndrome associated with many neurodegenerative diseases, characterized by a general decline in cognitive abilities that affects a person's ability to perform activities of daily living, everyday activities. This typically invo ...
(and dementias such as Alzheimer's disease, vascular dementia, and frontotemporal dementia),
Korsakoff's syndrome,
excessive vitamin D,
hypothyroidism,
hyperthyroidism
Hyperthyroidism is a endocrine disease in which the thyroid gland produces excessive amounts of thyroid hormones. Thyrotoxicosis is a condition that occurs due to elevated levels of thyroid hormones of any cause and therefore includes hyperth ...
, general fatigue,
Huntington's disease
Huntington's disease (HD), also known as Huntington's chorea, is an incurable neurodegenerative disease that is mostly Genetic disorder#Autosomal dominant, inherited. It typically presents as a triad of progressive psychiatric, cognitive, and ...
,
Pick's disease,
progressive supranuclear palsy (PSP),
brain damage
Brain injury (BI) is the destruction or degeneration of brain cells. Brain injuries occur due to a wide range of internal and external factors. In general, brain damage refers to significant, undiscriminating trauma-induced damage.
A common ...
,
schizophrenia
Schizophrenia () is a mental disorder characterized variously by hallucinations (typically, Auditory hallucination#Schizophrenia, hearing voices), delusions, thought disorder, disorganized thinking and behavior, and Reduced affect display, f ...
,
schizoid personality disorder,
bipolar disorder
Bipolar disorder (BD), previously known as manic depression, is a mental disorder characterized by periods of Depression (mood), depression and periods of abnormally elevated Mood (psychology), mood that each last from days to weeks, and in ...
,
autism spectrum
Autism, also known as autism spectrum disorder (ASD), is a neurodevelopmental disorder characterized by differences or difficulties in social communication and interaction, a preference for predictability and routine, sensory processing d ...
disorders,
ADHD, and others. Some medications and the heavy use of drugs such as
opiate
An opiate is an alkaloid substance derived from opium (or poppy straw). It differs from the similar term ''opioid'' in that the latter is used to designate all substances, both natural and synthetic, that bind to opioid receptors in the brain ( ...
s may bring apathy as a side effect.
See also
*
Acedia
*
Callous and unemotional traits
*
Compassion fatigue
*
Detachment (philosophy)
*
Political apathy
*
Reduced affect display
Reduced affect display, sometimes referred to as emotional blunting or emotional numbing, is a condition of reduced emotional reactivity in an individual. It manifests as a failure to express feelings either verbally or nonverbally, especially w ...
Notes
References
*
External links
''The Roots of Apathy''– Essay By David O. Solmitz
– McMan's Depression and Bipolar Web, by John McManamy
{{emotion-footer
Problem behavior
Emotions
Psychological attitude
Disorders of diminished motivation
Symptoms or signs involving mood or affect