What Drives Evil Acts?
Cruelty is not a single trait. It is a process of agency, identity, authority, opportunity and permission.
Research Snapshot
The strongest conclusions and the limits attached to them
Individual, relationship, community and societal conditions interact. The model avoids reducing violence to one defective personality or one bad environment.
Bandura’s framework identifies eight recurring ways people neutralize self-sanction before, during or after harmful conduct.
No brain scan, gene, diagnosis or childhood event can identify an inevitable violent offender. Risk factors are probabilistic and context-dependent.
In the best-known baseline condition, 26 of 40 participants continued to the final switch. The result demonstrates pressure, not mindless universal obedience.
The prison simulation ended early, but its methods, coaching, sampling and interpretation prevent it from functioning as clean proof that roles automatically create cruelty.
Systems influence action, but institutions do not act without people. Responsibility may be distributed; it does not disappear.
Research Update
What changed in the modern reading of classic “evil” experiments
The contemporary literature is less interested in a theatrical claim that “anyone becomes a monster” and more interested in identification, leadership, legitimacy, gradual commitment and institutional permission. This does not make situations unimportant. It makes the mechanism more precise.
Role absorption is no longer enough
Reanalysis of the Stanford Prison Experiment documented demand characteristics, researcher involvement and direct encouragement. The dramatic outcome cannot be treated as an untouched emergence of guard behaviour.
People follow identities and leaders
Later work emphasizes that participants often comply when they identify with a cause, authority or group project—not simply because they stop thinking. Commitment can produce both abuse and resistance.
Prediction is still weak
Research can identify conditions associated with harm, but individualized forecasts remain limited—especially for rare severe violence. False confidence can produce stigma, surveillance and unjust intervention.
Interactive Forces Map
Five levels that can increase or restrain harmful conduct
Clickable Research Chronology
How the dominant explanation moved from obedience to identity and systems
Definitions Before Diagnosis
Words that are related but not interchangeable
Evil
A judgment that an act or actor represents profound wrongdoing. It communicates condemnation but does not specify mechanism, diagnosis, intent or legal element.
Aggression
Behaviour intended to harm. Aggression can be physical, verbal, relational, impulsive, defensive, instrumental or institutionally authorized.
Violence
The intentional use of physical force or power, threatened or actual, against oneself, another person, a group or community, with likely injury or deprivation.
Cruelty
Inflicting, exploiting or disregarding suffering. Cruelty may involve pleasure, indifference, punishment, humiliation or instrumental calculation.
Culpability
Responsibility under a defined law. It depends on conduct, mental state, defences, evidence and procedure—not a general personality judgment.
Malevolence
A pattern of wishing, planning or accepting serious harm. It can describe intent, but it is not a standardized clinical diagnosis.
Moral Disengagement
Eight mechanisms that can make prohibited conduct feel permissible
Moral justification
Euphemistic labelling
Advantageous comparison
Displacement of responsibility
Diffusion of responsibility
Disregarding consequences
Dehumanization
Attribution of blame
Obedience Under Authority
What Milgram showed—and what the experiment cannot settle
Escalation changes the decision
Milgram did not ask participants to begin with the maximum switch. Small increments made each next action resemble the previous one. Commitment, laboratory legitimacy and the experimenter’s prompts created pressure to continue.
Variation studies matter as much as the headline result. Compliance changed when the authority was less proximate, peers resisted, the setting changed or participants had to act more directly.
Compliance was not automatic
Many participants challenged the experimenter, displayed distress or stopped. Later interpretations argue that some continued because they identified with the scientific project, trusted the setting or believed the learner was not in real danger.
The evidence supports vulnerability to legitimate authority—not a claim that conscience disappears whenever a person in a coat issues an order.
Stanford Prison Experiment Audit
A famous narrative with serious evidentiary defects
Group Identity and Leadership
Tyranny requires a shared project, not merely a crowd
“We” determines what becomes normal
People do not lose all identity in groups. They often shift from personal identity to a shared identity. Conduct then follows the group’s norms: rescue in one group, persecution in another.
A leader can define who belongs, what threat exists, which conduct proves loyalty and whose suffering should be ignored.
Groups can also protect
Shared identity can create whistleblowing, solidarity, mutual defence and refusal. The same capacity for coordination that enables abuse can organize resistance when the group’s moral norm rejects harm.
Prevention therefore requires more than telling individuals to “be brave.” Institutions must make dissent legitimate, visible and materially safe.
Dehumanization and Moral Exclusion
How language narrows the circle of obligation
“Vermin” and “beasts”
Targets are described as lacking refinement, reason or restraint. Violence is then framed as containment, cleansing or pest control.
Numbers and objects
People become units, inventory, files, targets or throughput. Suffering disappears behind technical language and administrative process.
Outside the boundary
Fairness and compassion are treated as obligations owed only to the in-group. The victim is not always denied humanity outright; they may be declared undeserving of protection.
Do not turn harm into an offender-centred thought experiment
Discussions of “ordinary people doing evil” can make victims disappear behind a fascinating mechanism. Every laboratory analogy, military report or institutional case ultimately concerns a person who experienced fear, injury, humiliation, loss or death. The mechanism matters because the suffering was real.
Bystanders, Diffusion and Silence
Inaction is shaped by uncertainty, coordination and perceived permission
Ambiguity
Pluralistic ignorance
Diffusion of responsibility
Retaliation risk
Institutional betrayal
Victimology Without Stigma
Who is harmed, who is believed and whose suffering becomes invisible
Power shapes victimization
People with less institutional power may face greater exposure to abuse and fewer safe exit routes: prisoners, children, employees, patients, migrants, people experiencing homelessness and members of stigmatized groups.
“Vulnerability” describes an unequal environment. It is not a flaw in the person harmed.
Diagnosis is not a violence label
Most people with mental illness are not violent. Risk is better understood through combinations such as prior violence, acute crisis, substance misuse, access to weapons, victimization and social instability.
People with serious mental illness also experience high rates of victimization. Reporting that presents diagnosis as the central explanation can increase stigma while doing little to improve prevention.
Predisposition Without Destiny
Biology can influence risk; it cannot supply a verdict
Regulation and threat
Research examines networks involved in impulse control, reward, threat detection, empathy and decision-making. Group averages cannot diagnose a violent individual.
Interaction, not a “violence gene”
Genetic variants may affect sensitivity to environments or regulation. Effects are small, distributed and dependent on development and context.
Traits are not crimes
Callousness, antagonism, impulsivity and sensation-seeking can be relevant to risk formulation, but traits neither prove future violence nor replace evidence of conduct.
Acute disinhibition
Alcohol and some drugs can increase impulsivity, misperception and conflict. The effect depends on dose, expectations, setting, history and access to victims or weapons.
Behaviour predicts better than labels
Documented prior violence, coercive control, threats and escalating boundary violations are generally more informative than broad demographic or diagnostic stereotypes.
Rare events defeat certainty
Even useful risk tools generate false positives when the outcome is rare. Responsible assessment communicates uncertainty and focuses on changeable conditions.
Trauma, Adversity and Learned Violence
Exposure can raise risk without predetermining replication
What adversity can change
Chronic maltreatment, neglect, household violence and unstable caregiving can affect stress response, trust, emotion regulation and beliefs about power. Children may learn that aggression is effective or unavoidable.
Those pathways increase need for support; they do not make later offending inevitable.
What interrupts transmission
Safe relationships, stable housing, treatment, education, meaningful belonging, economic security and nonviolent models can alter developmental trajectories.
The phrase “cycle of violence” should describe a preventable risk process—not a prophecy imposed on survivors.
Systems That Enable Cruelty
How organizations convert individual choices into durable patterns
Reward the outcome, ignore the method
Targets, quotas, promotions and informal praise can reward harmful results while policies officially prohibit the means used to obtain them.
Control the information
Restricted access, classification, nondisclosure, fragmented records and intimidation can prevent outsiders from seeing a pattern that insiders experience as routine.
Predictable non-enforcement
A rule has little protective value when powerful offenders expect delayed, selective or symbolic consequences.
Separate decision from suffering
Automation, subcontracting and bureaucracy can place the person making a harmful decision far from the person absorbing it.
Yesterday’s breach becomes today’s routine
Small tolerated violations create precedents. New members learn the real rule from what is rewarded and ignored, not from the written code.
Contain the scandal
Organizations may isolate responsibility in one visible “bad apple” to protect the leadership, design and incentives that made recurrence likely.
Evidence Toggle
What different research traditions can and cannot establish
Controlled pressure with limited realism
Experiments can isolate prompts, proximity, group behaviour and incremental commitment. They provide causal leverage but may rely on unusual samples, artificial tasks and participants who infer the researcher’s expectations. Laboratory compliance is not identical to criminal violence.
Media Mythology
Why simple stories outlive complicated evidence
Legal Responsibility
Explanation, mitigation, justification and excuse are different questions
Intent and knowledge
Duress and superior orders
Mental disorder
Mitigation
Institutional accountability
Prevention Architecture
Design conditions in which resistance is easier and abuse is harder
Recognize escalation
Teach people to identify coercive scripts, euphemism, victim blaming, incremental commitment and dehumanizing language before the final harmful act.
Strengthen safe challenge
Build peer cultures where dissent is respected, coercive control is recognized and help-seeking does not carry automatic loss of status.
Separate power and review
Use independent oversight, auditable decisions, rotation in high-discretion roles, protected reporting and meaningful consequences.
Reduce opportunity
Improve supervision, lighting, staffing, access controls, record integrity and victim support without converting prevention into indiscriminate surveillance.
Address modifiable risks
Stable housing, violence-interruption programs, substance-use treatment, mental-health care and early family support can reduce multiple forms of harm.
Protect truth-tellers
Whistleblower protection, investigative journalism, transparent records and independent courts make it harder for powerful systems to define abuse as normal.
Unresolved Void
Questions the evidence does not allow us to close
How much does ideology matter?
Are people primarily pressured by authority, or do they comply because the authority represents a cause they already value? Different cases likely require different answers.
When does gradual escalation become deliberate strategy?
Small steps can trap a participant, but sophisticated offenders and institutions may deliberately design those steps to recruit complicity.
Can empathy be selective and still restrain harm?
People may show deep care for an in-group while supporting violence against an out-group. General empathy scores can miss that boundary.
How should rare violence be predicted?
Low base rates create false positives. A system may identify many “high-risk” people while being wrong about most of them.
When does prevention become coercion?
Surveillance and preventive detention can reproduce the same dehumanization they claim to stop. Proportionality, review and due process remain essential.
How do institutions learn after scandal?
Public condemnation can produce new policies without changing incentives, leadership or retaliation. The meaningful measure is recurrence, not announcement.
Sources and Verification
Primary research, methodological critique, ethics and public-health context
Editorial stock photography is used illustratively. Each image is individually credited and linked to its Unsplash source; no stock image is reused on this page.
Milgram: Behavioral Study of Obedience
The 1963 paper reports the best-known baseline obedience condition and provides the original procedure and observed participant behaviour.
Open DOI recordBandura: Moral Disengagement
The 1999 review describes mechanisms that disconnect moral self-sanction from harmful action.
Open DOI recordReicher and Haslam: BBC Prison Study
The study challenges automatic role internalization and examines identification, power, organization and resistance.
Open DOI recordLe Texier: Debunking Stanford
An archival analysis of the Stanford Prison Experiment’s design, instructions, reporting and enduring textbook mythology.
Open DOI recordThe Belmont Report
Foundational principles for human-subject research: respect for persons, beneficence and justice.
Open HHS recordWHO World Report on Violence and Health
A multi-level framework for understanding violence, risk, prevention and institutional response.
Open WHO reportDiscover more from The Dark Side of Humanity
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