In criminology, deviance refers to any behavior, belief, or characteristic that violates the norms of a particular group or society and provokes disapproval, punishment, or stigma. That definition sounds simple, but criminologists have debated its boundaries for decades, because what counts as “deviant” shifts depending on who is doing the judging, where the behavior takes place, and when in history it occurs. The concept is broader than crime: all crime is deviant in a legal sense, but much deviance is perfectly legal. Understanding how criminologists actually define and use the term opens up a surprisingly rich set of questions about power, social control, and why societies draw the lines they do.
Two Competing Ways to Define Deviance
Criminologists and sociologists generally approach the definition of deviance from one of two directions. The first is the normative definition, which treats deviance as any violation of a norm held by most members of a society or by a specific social group. Under this view, the act itself is what matters. If a widely shared rule says you should not do something and you do it anyway, you have deviated, whether or not anyone notices.
The second approach is the reactivist (sometimes called “relativist” or “social constructionist”) definition, which focuses not on the act but on the audience’s response. Here, something becomes deviant only when other people react negatively to it. This camp splits further into a strict version, where deviance exists only after an actual negative reaction has occurred, and a softer version, where behavior qualifies as deviant if it is likely to generate disapproval even if no one has responded yet.1The Blackwell Encyclopedia of Sociology. Deviance, Normative Definitions of
The distinction matters more than it might seem. Normative definitions draw attention to the person who breaks the rule and ask why they did it. Reactivist definitions draw attention to the audience and ask why certain acts get punished while others, equally norm-violating, slide by unnoticed. Both definitions capture something real, and most working criminologists borrow from both depending on the question they are trying to answer.
Why Deviance Is Not the Same as Crime
People often use “deviance” and “crime” interchangeably, but criminologists treat them as overlapping circles rather than synonyms. Crime is a legal category: it is behavior that violates a formal statute and can be prosecuted by the state. Deviance is a social category: it is behavior (or a belief, or even a physical trait) that violates informal or formal expectations and draws negative judgment. Plenty of deviant acts are not crimes. Picking your nose during a job interview, wearing pajamas to a funeral, or loudly espousing unpopular political views may all provoke real social sanctions, but they will not get you arrested. Conversely, some crimes carry so little social stigma in certain communities that people barely consider them deviant, like jaywalking or slightly exceeding the speed limit.
The sociology of deviance and the sociology of law share territory because both are fundamentally about social control and the relationship between rules and behavior, but their boundaries are not firm.2Research Handbook on the Sociology of Law. Sociology of deviance and criminal law Criminal law formalizes some deviance into statute, but it only captures a fraction of what societies actually regulate through disapproval, shaming, exclusion, and gossip. That wider landscape of informal punishment is where the concept of deviance earns its keep in criminological thinking.
Durkheim and the Idea That Deviance Is Normal
One of the most counterintuitive claims in criminology comes from Émile Durkheim, who argued in the late 1800s that deviance is a normal and even necessary feature of every society. His reasoning was functional: when someone breaks a rule and the community responds with outrage or punishment, that response clarifies where the moral boundaries are. The collective reaction reminds everyone else what the group values. In Durkheim’s framework, crime reinforces solidarity by showing the community what it stands against.3Vold’s Theoretical Criminology. Durkheim, Anomie, and Modernization
Durkheim went further. He suggested that if a society somehow eliminated all serious crime, the community would simply redefine minor misbehaviors as deviant to maintain those moral boundaries. A monastery full of saints would still find someone to condemn for being insufficiently pious. The implication is that deviance is not a bug in social life but a structural feature that every group reproduces, regardless of how law-abiding its members are.
Theories About Why People Deviate
Once criminologists agree that deviance exists in every society, the next question is why particular individuals or groups engage in it. Several major theoretical frameworks compete for explanatory power, and each one highlights a different mechanism.
Strain Theory
Robert Merton’s strain theory, developed in the mid-twentieth century, argues that deviance arises from a gap between the goals a society promotes and the legitimate means available to achieve them. When people are told to pursue material success but lack access to quality education or jobs, the resulting strain pushes some of them toward deviant adaptations. They might innovate by pursuing success through illegal channels, retreat by dropping out entirely, or rebel by rejecting both the goals and the means. Merton’s framework was later extended to examine how people who feel disconnected from their roles or responsibilities adapt in ways that mirror his original categories.4Sociological Inquiry. Alienation and Deviance: Strain Theory Reconsidered
Differential Association
Edwin Sutherland’s differential association theory proposes that deviant behavior is learned the same way any other behavior is learned: through interaction with other people. If you spend time around people who define law-breaking as acceptable or even admirable, you are more likely to adopt those definitions yourself. Research testing Sutherland’s ideas has found that the probability of engaging in specific deviant behaviors, such as drug use, tracks closely with the associational and motivational conditions the theory predicts.5Criminology. Differential Association and Marijuana Use: A Closer Look at Sutherland (With a Little Help From Becker) The key insight is that deviance does not require pathology or deprivation. It can be a straightforward product of who you spend time with and what they teach you to value.
Social Control Theory
Travis Hirschi flipped the question. Instead of asking why some people deviate, he asked why most people conform. His answer was social bonds: attachment to parents, commitment to conventional goals like education, involvement in prosocial activities, and belief in the moral validity of rules. When those bonds weaken, deviance becomes more likely. Hirschi’s finding that stronger attachment to parents correlates with lower rates of delinquency has held up across decades of research and is now treated as an established fact in the field.6Annual Review of Criminology. Social Control Theory: The Legacy of Travis Hirschi’s Causes of Delinquency
Power, Conflict, and Who Gets to Define Deviance
All of the theories above tend to take existing norms as a given and ask who violates them and why. Conflict-oriented criminologists push back on that starting point. They argue that what gets labeled deviant in the first place is itself a product of power. Groups with more political, economic, or cultural influence are better positioned to impose their definitions of acceptable behavior on everyone else. The process of labeling something deviant, and the process of criminalizing it, are outcomes of negotiations about morality and the legitimacy of using power.7The Sociological Review. Criminalization and Deviantization as Properties of the Social Order
A nonpartisan conflict analysis treats as entirely open questions what behaviors get called deviant, how they acquire that label, why certain labels stick, and who benefits from the labeling. Under this lens, deviance is a function of the relative power of competing groups in a struggle over resources and life chances.8Criminology. Analyzing Official Deviance Consider how vagrancy laws have historically criminalized poverty, or how homosexuality was classified as both criminal and medically deviant for most of the twentieth century. In both cases, the people doing the defining were not the people being defined.
This perspective also raises uncomfortable questions about “official deviance,” meaning deviant acts committed by those in positions of authority. Corporate fraud, police misconduct, and state-sponsored torture all violate widely held norms, but the perpetrators’ access to institutional power can shield them from the label. The concept of deviance, viewed through this lens, is as much about who escapes the label as who receives it.
Stigma and the Weight of the Deviant Label
Once someone is labeled deviant, the consequences extend far beyond any formal punishment. Erving Goffman’s work on stigma drew a useful distinction between people who are “discredited,” meaning their stigmatized trait is already visible or known, and people who are “discreditable,” meaning their stigma could be concealed.9PubMed Central. Discredited Versus Discreditable: Understanding How Shared and Unique Stigma Mechanisms Affect Psychological and Physical Health Disparities Someone with a visible physical disability or a publicly known criminal record lives in a different social world than someone whose past drug use or mental health history can remain hidden. Both face stigma, but the strategies available to them differ sharply.
For criminology, this matters because the deviant label tends to be sticky. A person convicted of a felony may be formally done with the legal system yet continue to face housing discrimination, job rejection, and social exclusion for years. Labeling theorists argue that these ongoing consequences can actually deepen deviant behavior: if conventional paths are blocked because of a label, the rational response may be to lean further into deviant networks where the label carries no penalty or is even valued.
Hidden Deviance and What Official Statistics Miss
One of the persistent problems in studying deviance is that official data, like arrest records and court statistics, capture only the fraction of deviant behavior that comes to the attention of authorities. The gap between actual deviance and recorded deviance is sometimes called the “dark figure.” Self-report studies, where people anonymously describe their own rule-breaking, consistently reveal that this gap is enormous. Classic research in this area found that respondents reported a large number of undetected violations, and the volume of those violations differed little across social class levels, though the types of deviance did differ by status.10Oxford Academic. Hidden Delinquency and Social Status
That finding has significant implications for how we think about deviance and social class. If upper-status and lower-status people break rules at roughly similar rates but commit different kinds of offenses, then the heavy concentration of lower-status people in the criminal justice system says more about which types of deviance get policed than about who is actually deviant. Self-report data challenge the assumption that deviance is concentrated among the poor and support the conflict perspective that labeling is selective.
When Deviance Gets Reclassified as Illness
One of the most striking shifts in how deviance is handled involves what sociologists call medicalization. This is the process by which behaviors, appearances, or belief systems that were once treated as moral failures or crimes get redefined as medical conditions. Alcoholism, for example, was historically viewed as a personal vice deserving punishment; it is now widely understood as a disease deserving treatment. Homosexuality was listed as a psychiatric disorder until 1973. Obesity, hyperactivity in children, and certain forms of political extremism have all been subject to medical framing at various points.
The medicalization of deviance reframes the deviant person as sick rather than bad. That might sound like pure progress, but sociologists have pointed out a trade-off. Medical labels replace punishment with treatment, but they also hand control over to health professionals who can define and manage an expanding range of social problems. When deviance is seen as purposeful, the social response tries to alter behavior. When it is seen as illness, the response tries to alter the underlying condition that supposedly prevents conformity.11SAGE Publications. Encyclopedia of Social Deviance: Medicalization of Deviance Either way, the goal is conformity. What changes is who gets to supervise the process.
Deviance in Online Spaces
Digital life has created entirely new categories of deviant behavior and forced criminologists to rethink how norms operate when interactions happen through screens. Cyberbullying, online harassment, non-consensual sharing of intimate images, hacking, digital piracy, and various forms of online fraud all qualify as deviance, and many of them occupy a gray zone where social norms and criminal law are still catching up to the technology.
A systematic review of research on adolescent deviance and cyber-deviance found that family patterns, socio-demographic factors, victimization experiences, school environment, individual personality traits, and patterns of internet use all predict online deviant behavior.12PubMed Central. Adolescent Deviance and Cyber-Deviance. A Systematic Literature Review Many of these predictors mirror what researchers already know about offline deviance, suggesting that the underlying dynamics are not entirely new. But the anonymity and reach of digital platforms do introduce distinct features: a single act of online deviance can reach thousands of people instantly, norms about acceptable online behavior are still being negotiated, and enforcement is inconsistent and often platform-dependent rather than state-controlled.
Positive Deviance
Not all deviance involves harm. The concept of positive deviance refers to behaviors that depart from the norm in beneficial ways. A nurse who invents an unorthodox workaround that dramatically reduces infection rates is deviating from standard practice, but the outcome is better patient care. A community member in a low-resource setting who manages to keep their children well-nourished despite the same constraints everyone else faces is displaying behavior that is statistically deviant and practically valuable.
The positive deviance approach has gained traction in public health and organizational research as a strategy for solving stubborn problems. Rather than importing external solutions, researchers identify the people within a community who are already beating the odds and study what they are doing differently. The premise is that solutions to complex problems often already exist within the affected community, and the task is to find and spread them.13PubMed Central. The use of positive deviance approach to improve health service delivery and quality of care: a scoping review This usage of “deviance” is a long way from the criminological norm, but it shares the core idea that deviation from the expected pattern is what makes the behavior interesting.
Biological Factors and the Limits of Social Explanation
Criminology has historically been dominated by sociological explanations for deviance, but a growing body of work examines whether biological factors play a contributing role. Research in biosocial criminology has focused on three broad areas: differences in physiological stress responses (such as blunted heart rate and reduced skin conductance), structural and functional differences in brain regions involved in decision-making and emotional regulation, and genetic factors, particularly how genes interact with environmental conditions rather than operating in isolation.14PubMed Central. Biological explanations of criminal behavior
This line of research is controversial, in part because earlier biological theories of deviance were crudely deterministic and were used to justify racist and eugenic policies. Modern biosocial approaches are more careful. They do not claim that biology causes deviance in any simple sense. Instead, they argue that certain biological traits can increase vulnerability to deviant behavior when combined with particular environmental stressors like childhood abuse or neighborhood disadvantage. The interaction matters more than either factor alone. Whether this work ultimately reshapes how criminologists define deviance or simply refines how they explain it remains an open question.
Deviance Beyond National Borders
The concept of deviance also operates at the level of states and international institutions. When a government engages in torture, for instance, it violates an international norm. Research on how the prohibition against torture has evolved shows that international bodies have played a greater role in defining and enforcing that norm than the powerful states that violated it. In the 1990s and early 2000s, the Committee against Torture found both Israel and the United States in violation of the torture prohibition, and its subsequent clarification of the norm’s scope shaped the very definition of what counts as torture under international law.15International Studies Quarterly. From Norm Violations to Norm Development: Deviance, International Institutions, and the Torture Prohibition
This international dimension underscores a theme that runs through every level of the deviance concept: defining deviance is never a neutral, technical exercise. Whether the setting is a neighborhood, a courtroom, or the United Nations, the process of deciding what behavior falls outside acceptable limits is shaped by who holds authority, what interests are at stake, and how much power the people being labeled have to push back.