Stockholm syndrome: what it is and how it manifests itself

"Stockholm syndrome" is a popular term used in the media to describe the paradoxical sympathy, trust, or behavioral rapprochement between a hostage and their captor. The term emerged after the notorious bank robbery at Norrmalmstorg Square in Stockholm in August 1973, when four hostages demonstrated unexpected loyalty to their armed captors. This episode later became emblematic of the phenomenon, although the victims themselves interpreted their behavior as a survival strategy rather than a "disease." [1]

Important: "Stockholm syndrome" is not recognized as a separate diagnosis in either the International Classification of Diseases or modern psychiatric guidelines. A classic review of the literature showed that the concept is widely used in the media, but lacks valid diagnostic criteria and is not found in international classifications; rather, it is a journalistic metaphor for describing complex adaptive responses to hijacking. [2]

Today, researchers increasingly suggest speaking not about a "syndrome," but about a spectrum of mechanisms understandable from a psychological perspective: forced submission, "attachment" in situations of violence, behavioral appeasement of the aggressor, survival strategies, and post-traumatic reactions. This shift in language helps shift the conversation away from stigma and toward practical assistance for victims. [3]

In practical terms, this means that people who have experienced capture or long-term violence and control are assessed for risk of trauma, signs of post-traumatic stress disorder, depression, anxiety, and dissociation, and then offered evidence-based interventions to restore safety, autonomy, and health. [4]

Term, history and place in classifications

The term originated after a six-day drama in Stockholm from August 23-28, 1973: a gunman seized a bank branch, took four hostages, and demanded that a prison acquaintance be delivered to him. The country watched the incident live on television; it subsequently cemented the idea of "sympathy for the hostage-taker" in the public consciousness.

Moreover, professional literature since the late 2000s has emphasized that "Stockholm syndrome" is not described in either the International Classification of Diseases, Tenth or Eleventh Revisions, or the Diagnostic and Statistical Manual of Mental Disorders; there are no validated criteria, and the empirical base is fragmented. The conclusion of a systematic review: the concept is more mythologized and media-fueled than clinically defined. [6]

Table 1. What Stockholm syndrome is and what it does not mean

Paragraph	State of affairs
Source of the term	Bank robbery at Norrmalmstorg, Stockholm, 1973.
Diagnosis status	Not included in the International Classification of Diseases and current psychiatric guidelines. [8]
Scientific criteria	There are no uniform valid criteria; the basis is cases and media descriptions. [9]
Modern interpretation	Adaptive survival mechanisms: forced submission, “attachment” during violence, appeasement behavior. [10]

Epidemiology

There are no precise population estimates of prevalence: the phenomenon is described primarily in reports of hostages, kidnappings, domestic violence, human trafficking, quasi-religious cults, and other situations of prolonged control and threats. The lack of generally accepted criteria and reliance on retrospective accounts makes percentage estimates unreliable. This is a key limitation of the entire topic. [11]

Only guidelines are known: complementary phenomena—post-traumatic stress disorder, depression, anxiety disorders—are common among survivors of abductions and kidnappings, and they determine the extent of assistance. Therefore, the clinical focus is shifting from "searching for a syndrome" to screening and treating validated trauma consequences. [12]

The term's history continues to live on in the media: anniversary publications recall the concept's origins and the controversial nature of the label itself. This provides further evidence for practitioners to speak to victims without stigmatizing labels and to focus on safety and recovery. [13]

Table 2. Why it is impossible to name exact percentages

Cause	How does it affect
There are no diagnostic criteria	It is not possible to standardize the counting of cases.[14]
Sources - cases and media	No systematic sampling; "high-profile cases" effect. [15]
Overlap with trauma reactions	The "syndrome" is mixed with post-traumatic stress disorder, depression, and codependent relationships. [16]

Reasons and context

Behavioral "loyalty to the aggressor" arises in situations where life and health are entirely dependent on the will of another person, and access to alternatives and support is limited. The rational component of this behavior is to reduce the threat and maintain a humane attitude from the aggressor in order to survive. This may manifest itself as politeness, gratitude, requests "not to provoke an assault," or protection of the aggressor from "outsiders"—but internally, it remains a security strategy. [17]

Long-term abuse and control (domestic violence, trafficking, cults) create persistent behavioral loops: isolation, unpredictable punishments and "gifts," deprivation of sleep and autonomy, intimidation, and, concurrently, episodes of "mercy." These are classic mechanisms of coercive control, not a "special type of love." [18]

Under constant threat, the brain quickly "learns" strategies that reduce the risk of immediate punishment. This adaptation is reinforced because it brings short-term security—even if it keeps the person in a dangerous environment for the long term. This behavioral reinforcement explains the "why didn't she run away" paradox well. [19]

Finally, media narratives distort the picture: the juxtaposition of "sympathy for the criminal" and "hostility toward the police" often reflects mistrust of the operation or fear of assault, rather than a "romanticization" of violence. Testimonies from participants in the 1973 events confirm precisely the pragmatic motivation and criticism of unsuccessful negotiation tactics. [20]

Risk factors

The risk of "appeasement behavior" is increased by: the duration of the hold, daily dependence on the controller (food, water, sleep), isolation from alternative sources of support, unpredictability of punishments and "rewards," and previous traumatic experiences. These factors are described in studies on coercive control and violence. [21]

Individual vulnerabilities—a lack of external connections and resources, language barriers, economic dependence or migration status, and limited access to legal assistance—determine how effective survival strategies are and how long a person remains in a dangerous environment. [22]

On the system's side, the risk is perpetuated by inept negotiations, protracted power scenarios, stigmatization of the victim, and disbelief after release. This exacerbates trauma and hinders access to help. Therefore, modern trauma treatment guidelines emphasize a gentle, non-verbalized approach. [23]

Pathogenesis: What happens to the psyche?

The biological level is chronic hyperactivation of stress systems: constant readiness for threat, hyperattention to danger signals, and a "tunnel" for any sign of a change in the controller's mood. Under such conditions, the brain actively reinforces behavior that reduces the likelihood of a shock "here and now." [24]

The cognitive-behavioral level—classical operant reinforcement and "safety learning": compliments, requests, following directions, and smiling can temporarily reduce the risk of punishment. This "payment for safety" is eventually perceived as the only possible strategy. [25]

The interpersonal level is a forced "attachment" to the source of the threat, formed through isolation, alternating violence and favors, promises, and the fear of loss. Similar mechanisms are described in long-term domestic violence and in quasi-religious cults. [26]

It is precisely because of these mechanisms that more and more authors are proposing to abandon the word “Stockholm” in favor of the terms “pacification behavior” and “coercive control”: they more accurately reflect the essence and do not romanticize violence. [27]

Symptoms and signs in real life

During a takeover: emphasized politeness, attempts to defuse tension, protecting the aggressor from an "external threat," requests "not to storm," and a refusal to escalate the conflict are ways to reduce immediate risk. They are not the same as consent or "being in love." [28]

After release: shame and emotional confusion, ambivalence toward the aggressor, guilt "for surviving," distrust of authorities, intrusive memories, avoidance of reminders, sleep disturbances, anxiety attacks. These are typical manifestations of traumatic stress, not a "special love-for-the-abductor syndrome." [29]

In cases of prolonged control: subordination, denial of autonomy, defending the aggressor in front of others, somatic complaints against the backdrop of constant stress, social isolation. Here, work on safety and the restoration of rights and independence is most needed. [30]

Table 3. "Similar, but different"

Phenomenon	What is this	What is the difference?
Appeasement behavior	A strategy to reduce risk here and now	Rational when threatened, not the same as "sympathy." [31]
"Binding" in cases of violence	Communication under duress and isolation	Formed by punishments and “favors.” [32]
Lima syndrome (rare)	The hostage taker's sympathy for the hostage	Reverse dynamics; a media term.
Post-traumatic stress disorder	Reactions to trauma after release	It has valid criteria and proven treatment. [33]

Diagnostics

Step 1: Safety and Basic Needs. Initially, physical safety, medical examination, rest, food, and legal assistance are addressed. Any inquiries about "feelings toward the captor" are postponed until stabilization. [34]

Step 2. Initial psychological assessment. Screening for trauma symptoms: intrusive memories, avoidance, hyperarousal, sleep and mood disturbances, dissociation. Assess the level of support, risk of recurrence, and family needs. [35]

Step 3. Avoid labels. Don't look for "Stockholm syndrome" as a diagnosis; it doesn't exist in classifications. Record the observed behavior and the context of coercion without subjecting the person to accusatory interpretations. [36]

Step 4. Assistance plan and route. If symptoms of trauma are present, early access to trauma-focused psychological assistance is provided; with long-term monitoring, the involvement of social services, legal protection, and programs to end violence is provided. [37]

Table 4. Diagnostic route

Stage	Target	Tools
Stabilization	Safety and basic needs	Medical and legal assistance
Trauma screening	Identify post-traumatic stress disorder and related issues	Clinical interview, validated questionnaires. [38]
Description of context	Understand the extent of coercive control	Social and legal assessment
Routing	Assign assistance	Psychotherapy, social measures, monitoring

Differential diagnosis

Distinguishing survival behavior from romanticizing the aggressor: "politeness" and "defense against assault" in captivity are a safety tool, not "love." Outside judgments based on short videos are often erroneous and harmful. [39]

We distinguish coercive control and "attachment" in violence from habitual interpersonal dependencies: here, isolation, threats and punishments, economic and physical dependence are decisive. This requires social and legal measures, not moralizing. [40]

We distinguish post-traumatic stress disorder from acute stress reaction: in the first weeks there may be a “storm” that partially subsides; but if symptoms persist after 1 month, specialized treatment is indicated. [41]

We are skeptical of the "Stockholm syndrome diagnosis": it is not a clinical entity. The focus is on describing the observed and treating the consequences of trauma, where there are proven protocols and predictable outcomes. [42]

Treatment and support

It's important to begin with the principles of a trauma-informed approach: safety, trust, choice and voice for the survivor, and strengthening control over one's own life. This framework is essential regardless of whether the seizure was brief or the person was under prolonged coercive control. [43]

Psychological treatment for severe trauma symptoms relies on proven methods: individual trauma-focused cognitive behavioral therapy and eye movement desensitization and reprocessing. National and international guidelines recommend these approaches as first-line interventions for adolescents and adults. They help process memories, reduce avoidance and hyperarousal, and restore sleep and attention. [44]

In the early post-event period, brief supportive meetings, active monitoring, and, if necessary, early cognitive behavioral therapy for those already experiencing clinically significant symptoms are helpful. Conversely, "ventilation" with a detailed retelling of the incident "to everyone at once" is not indicated. Decisions are made individually and carefully. [45]

Pharmacotherapy is not the first choice for treating the trauma itself; its role is in the presence of significant concomitant depression, anxiety disorders, insomnia, and pain. Medications are selected in conjunction with psychotherapy and only after safety and support have been ensured. [46]

Social and legal measures are an equal part of assistance. For survivors of long-term violence, this includes protection from persecution, formalizing victim status, access to housing, financial and legal support, and document restoration. Without these steps, psychological therapy stalls because the threat remains. [47]

Working with families and the community is important to reduce stigma and increase supportive behavior: relatives are taught coping strategies so they don't blame the victim for "sympathizing with the aggressor." This reduces feelings of guilt and facilitates a return to normal life. [48]

In cases where media coverage or public attention increases pressure (high-profile cases), the team should establish information hygiene: closed communication channels, minimizing re-traumatization through interviews and "questioning for the sake of a story." The goal is to protect the mental health and dignity of the victim. [49]

If a person continues to justify the aggressor or seeks to return to a dangerous environment, this is not a reason for stigma. In practice, this reflects fear of retaliation, economic dependence, community pressure, or mistrust of the system. Solutions include increased security, legal assistance, and gradual work on beliefs in therapy. [50]

Self-help groups, supported employment, reestablishing social roles, and normalizing sleep and routine are key components of the final stage. It is the return of control and "normal life" that most often consolidates the effects of therapy. [51]

Finally, language matters. Rejecting the label "Stockholm syndrome" in favor of precise descriptions isn't "softness" but medical correctness: we treat the consequences of trauma and help people escape coercion, not discuss "falling in love with their captor." This approach is demonstrably more humane and effective. [52]

Table 5. What helps and when

Direction	To whom and at what stage	For what
Trauma-informed reception	To all those affected from the first hours	Security, trust, control. [53]
Individual trauma-focused cognitive behavioral therapy	Adolescents and adults with clinical symptoms	Reduction of intrusive memories, avoidance, hyperarousal. [54]
Eye movement desensitization and reprocessing	Teenagers and adults	Comparable effectiveness; recognized by international guidelines. [55]
Social and legal measures	Survivors of long-term control	Breaking the cycle of coercion, housing, finances, protection. [56]
Pharmacotherapy according to indications	For severe anxiety, depression, insomnia	Symptom management in conjunction with psychotherapy. [57]

Prevention and tactics during captures (system level)

Negotiation practices with hostages are based on reducing the risk of violence and humanely treating hostages; this has been shown to reduce the likelihood of injury and death. The key is a professional team, active listening, step-by-step trust-building, and preventing escalation. This approach reduces the need for victims to "pacify" the aggressor on their own. (Summary of the principles of crisis negotiation.)

Upon release, access to proven trauma-relevant protocols is mandatory: early consultations, individual trauma-focused cognitive behavioral therapy, and eye movement desensitization and reprocessing (EMDR), if needed. This reduces the risk of symptom chronicity. [58]

At the societal level, stigma and secondary trauma are reduced by: proper media practices, avoiding sensationalism, and respecting the privacy of victims. These simple rules significantly influence outcomes. [59]

Forecast

With timely, sensitive, and evidence-based intervention, most people gradually return to school, work, and relationships. Key predictors include the duration and severity of control, access to social and legal support, and early initiation of psychotherapy. [60]

If traumatic stress disorder is left untreated, symptoms can persist for years, impairing health, work, and family life. This is why guidelines emphasize early access to trauma-focused psychological care. [61]

Talking about "Stockholm syndrome" is useful insofar as it draws attention to the complexity of human responses under threat. But what's more important to people is safety, support, and access to therapies that actually work. [62]

FAQ

Is this even a diagnosis?
No. "Stockholm syndrome" is not described in international classifications and has no valid criteria. It is a media label for a variety of adaptive reactions in captivity or under long-term control. [63]

Why do hostages sometimes "defend" their captors?
Most often, it's a survival strategy: an attempt to reduce the risk of violence here and now, achieve human contact, and await a safe outcome. This is not the same as "sympathy" or consent. [64]

What to do after release?
First, safety and rest, then assessment of trauma symptoms and access to proven interventions: individualized trauma-focused cognitive behavioral therapy and eye movement desensitization and reprocessing. In cases of prolonged coercive control, social and legal measures are used. [65]

Is it possible to "get over it" and forget about it?
For some people, symptoms resolve on their own, but for many, they persist and require support. Early treatment increases the chances of a full recovery. [66]

Why do experts suggest abandoning the term?
Because it stigmatizes victims and masks the real mechanisms—coercive control and traumatic reactions. It's more accurate to speak in the language of behavioral science and a trauma-informed approach. [67]