Difficulty: Introductory | Prerequisites: None
This is the opening chapter of Abnormal Psychology, and it tackles the most basic question the course needs to answer before anything else: what counts as "abnormal"? The answer is less obvious than it sounds, because culture shapes how people express symptoms, which behaviours get labelled as problems, and which treatments are considered acceptable. If you're starting the course fresh, this is your foundation. Everything that follows (specific disorders, diagnostic criteria, treatment approaches) rests on the frameworks introduced here, particularly the Four Ds.
Whether a behaviour is considered abnormal depends heavily on the cultural context it occurs in. Psychologists use four broad criteria, known as the Four Ds (dysfunction, distress, deviance, dangerousness), to guide judgements of abnormality, but none of them works perfectly on its own.
Cultural relativism
The view that behaviours can only be labelled abnormal relative to the norms of a given culture. In simple terms, what's "normal" in one society might be considered disordered in another, and vice versa.
Dysfunction
Behaviours, thoughts, or feelings that interfere with a person's ability to function in daily life, hold a job, or maintain close relationships. Think of it as: can this person manage the basic demands of their everyday world?
Distress
Emotional suffering caused by a behaviour or feeling, either to the individual or to those around them. In simple terms, if the person (or the people close to them) is suffering because of it, that tips the scales towards "abnormal."
Deviance
Behaviour that is statistically rare or that violates social norms to an extreme degree. Think of it as: how far outside the expected range does this behaviour fall? Hearing voices when nobody is there is a classic example.
Dangerousness
The potential for a behaviour or feeling to cause harm, either to the individual (e.g. suicidal gestures) or to others (e.g. excessive aggression). In simple terms, does this behaviour put someone at risk?
The Four Ds
A collective shorthand for dysfunction, distress, deviance, and dangerousness. These four criteria are used together to evaluate whether a behaviour might be considered abnormal. No single D is sufficient on its own.
Culture shapes not just which behaviours are labelled abnormal, but how symptoms show up in the first place.
People in some cultures may be more or less willing to acknowledge certain feelings or behaviours openly.
For example, the willingness to report emotional distress varies significantly across cultures.
Culture also determines which treatments are seen as appropriate or helpful.
Western medicine might prioritise medication and psychotherapy, while other cultural frameworks consider herbal remedies, acupuncture, or spiritual practices equally valid.
Dysfunction – the behaviour gets in the way of daily living. A person who cannot hold a job, attend school, or sustain relationships because of their symptoms meets this criterion.
Distress – the behaviour causes emotional pain. This can be the person's own distress or the distress of people around them.
Deviance – the behaviour falls well outside cultural or statistical norms. Context matters here: a behaviour considered deviant in one setting may be unremarkable in another.
Dangerousness – the behaviour poses a risk of harm. This can be directed inward (self-harm, suicidal behaviour) or outward (aggression towards others).
These four criteria are meant to be used in combination. A behaviour that meets only one D might not warrant an "abnormal" label; the more Ds it meets, the stronger the case.
Cultural relativism is directly relevant to clinical practice in diverse settings. A therapist working with immigrant families, for instance, needs to distinguish between culturally normative expressions (grief rituals, spiritual experiences) and genuine psychopathology. Misreading cultural behaviour as a symptom can lead to misdiagnosis.
Students often assume "abnormal" simply means "rare." Rarity (deviance) is only one of four criteria, and plenty of rare behaviours are perfectly healthy.
Students sometimes think all four Ds must be present for a behaviour to be considered abnormal. In practice, meeting even two or three may be enough depending on severity.
There is a tendency to treat cultural relativism as meaning "anything goes." It does not. It means context matters when making judgements, not that judgements cannot be made.
Students may overlook that distress includes the distress of others around the individual, not just the person's own suffering.
⚠️ The Four Ds are a near-certain exam topic. Be able to name, define, and give an example of each.
⚠️ Know that no single D is enough on its own to define abnormality. Exams commonly test this with scenarios where only one criterion is met.
⚠️ Cultural relativism questions often ask you to apply the concept to a scenario (e.g. "Is this behaviour abnormal?" followed by cultural context that changes the answer).
⚠️ Be prepared to explain how culture influences symptom expression, willingness to disclose, and treatment acceptability as three separate effects.
True or False: A behaviour must meet all four Ds to be considered abnormal.
Fill in the blank: The view that behaviour can only be judged abnormal relative to the norms of a specific culture is called __________.
True or False: Deviance alone is sufficient to label a behaviour as abnormal.
Fill in the blank: The "distress" criterion includes suffering experienced by __________, not just the individual.
True or False: Cultural relativism means that no behaviour can ever be considered abnormal.
(Answers: 1. False; 2. Cultural relativism; 3. False; 4. Others around the individual; 5. False)
Q: A person hears voices when no one is present but reports no personal distress, holds a steady job, and poses no danger. Using the Four Ds framework, would this behaviour be considered abnormal? Why or why not?
A: It clearly meets the deviance criterion (hearing voices is statistically rare and socially unusual). However, it does not meet dysfunction, distress, or dangerousness. Under the Four Ds framework, meeting only one criterion makes the case for "abnormal" weaker, though deviance of this magnitude might still prompt clinical concern.
Q: How does cultural relativism influence the diagnosis of abnormal behaviour?
A: Cultural relativism holds that a behaviour can only be judged as abnormal relative to the norms of the culture in which it occurs. A behaviour considered disordered in one cultural context may be entirely normative in another. This means clinicians must account for a person's cultural background before applying diagnostic labels.
Q: Name and briefly define each of the Four Ds.
A: Dysfunction (behaviour interferes with daily functioning), Distress (behaviour causes suffering to the individual or others), Deviance (behaviour is statistically rare or violates social norms), Dangerousness (behaviour poses a risk of harm to self or others).
Q: Give two ways that culture can influence the expression or treatment of abnormal behaviour.
A: Culture can shape how willing people are to acknowledge or disclose certain symptoms, and it determines which forms of treatment (medication, therapy, herbal remedies, acupuncture) are considered acceptable or helpful.
This material connects directly to the diagnostic systems covered later in the course (DSM-5, ICD), which attempt to operationalise "abnormality" into specific criteria. It also ties into the history of abnormal psychology, where past definitions of abnormality were often culturally biased (e.g. drapetomania, hysteria). Understanding cultural relativism early will be essential when studying culture-bound syndromes in later chapters.
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