The Charcot school and the Nancy school were two influential approaches to hypnosis in nineteenth-century France. Both helped make hypnosis an important subject in medicine and psychology, but they explained hypnotic phenomena differently and emphasized different methods of observation and treatment.
In simple terms:
Charcot’s Salpêtrière school treated hypnosis mainly as a pathological or medically abnormal condition associated with hysteria.
The Nancy school, led by Ambroise-Auguste Liébeault and Hippolyte Bernheim, treated hypnosis mainly as a normal psychological capacity shaped by suggestion.
These differences were not always absolute. Both groups studied hypnosis in clinical settings, both used suggestion, and individual practitioners did not always fit neatly into one category. Still, the contrast between the two schools provides a useful way to understand the development of modern ideas about hypnosis, suggestion, and the relationship between mind and body.
What was the Charcot school?
The Charcot school developed around the French neurologist Jean-Martin Charcot at the Salpêtrière Hospital in Paris. Charcot was one of the leading neurologists of his time and had a major influence on the medical study of hysteria and neurological disorders.
Charcot argued that hypnosis was closely related to hysteria. He presented hypnosis as a distinctive nervous condition that could be produced, observed, and classified in a clinical setting. In his account, hypnotized patients could pass through recognizable stages. These stages were associated with particular physical and behavioral signs, such as changes in muscle tone, movement, responsiveness, and apparent sensitivity.
Charcot’s view was often called the “somatic” or “neurological” position because it explained hypnosis in terms of changes in the nervous system. He did not regard hypnosis simply as the result of a person accepting suggestions. Instead, he treated it as a physiological condition with a special relationship to hysteria.
His demonstrations at the Salpêtrière made hypnosis highly visible to the medical world. They also encouraged physicians to study hypnotic behavior through clinical observation, classification, and public demonstration.¹
What was the Nancy school?
The Nancy school began with Ambroise-Auguste Liébeault, a physician who used hypnosis and suggestion in his practice in Nancy, France. It later became strongly associated with Hippolyte Bernheim, a professor of medicine who helped bring Liébeault’s ideas to a wider medical audience.
The Nancy school rejected the claim that hypnosis was a rare pathological state limited mainly to people with hysteria. Its members argued that hypnosis was connected to suggestion and that suggestibility was a broadly human psychological capacity. In their view, a person could enter a hypnotic condition because of verbal guidance, expectation, attention, belief, and interpersonal influence—not because hypnosis required a distinctive neurological disorder.
Bernheim described hypnosis as a condition in which suggestions could produce changes in experience, behavior, and bodily response. He also argued that suggestion could influence people outside formal hypnosis. This helped shift attention from hypnosis as a special nervous disease toward suggestion as a general psychological process.²
What was the central disagreement?
The main disagreement concerned the nature of hypnosis.
Charcot’s position
Charcot’s school generally maintained that:
Hypnosis was a special physiological or pathological condition.
It was closely associated with hysteria.
It had identifiable stages and physical signs.
Hypnotic phenomena were best understood through neurological and clinical observation.
Suggestion alone did not adequately explain hypnosis.
Nancy’s position
The Nancy school generally maintained that:
Hypnosis was primarily a psychological condition.
It was not restricted to people with hysteria.
Suggestion played a central role in producing hypnotic responses.
Hypnotic responsiveness existed on a continuum rather than only in a small pathological group.
Many hypnotic effects could be understood through ordinary psychological processes such as expectation, attention, belief, and compliance.
The disagreement was therefore not simply about technique. It involved competing theories of the body, the mind, illness, and social influence.
How did the two schools explain hypnotic symptoms?
The schools interpreted similar observations in different ways.
Suppose a person displayed temporary paralysis, anesthesia, unusual movements, or dramatic changes in responsiveness during hypnosis. A Charcot-oriented explanation might treat these effects as signs of a nervous disorder or as manifestations of hysteria. The symptoms were interpreted as evidence that hypnosis had produced a particular physiological state.
A Nancy-oriented explanation would place more emphasis on suggestion. The person’s response might be understood as the result of verbal instruction, expectation, attention, social context, and the person’s capacity to respond to ideas. The symptom could still appear genuine and involuntary without being evidence of a specific neurological disease.
This distinction is important. The Nancy school did not necessarily claim that hypnotized people were pretending. Rather, it proposed that suggestion could produce real changes in experience and behavior without requiring a pathological neurological condition.
Did Charcot believe that suggestion was unimportant?
No. It would be misleading to say that Charcot ignored suggestion entirely. Suggestion was part of the clinical environment at the Salpêtrière, and later historians have emphasized that demonstrations, expectations, and interactions between physicians and patients could affect what was observed.
The sharper point is that Charcot did not make suggestion the primary explanation of hypnosis in the way Bernheim did. Charcot treated hypnotic states as medically significant conditions, while Bernheim treated suggestion as the central explanatory concept.
Modern historical scholarship has also questioned whether Charcot’s demonstrations were as neutral as they appeared. Patients, physicians, institutional routines, expectations, and public performances may all have shaped the observed behavior.³ This does not mean that every observation was fabricated. It means that clinical demonstrations are influenced by context and should not automatically be treated as direct measurements of a fixed biological condition.
Did the Nancy school deny the body’s role?
No. The Nancy school emphasized psychological processes, but its members did not necessarily deny that hypnosis could produce bodily changes. They observed alterations in movement, sensation, pain, and other physical responses.
Their disagreement with Charcot concerned the explanation of those changes. The Nancy school argued that psychological suggestion could influence bodily experience and behavior. In this view, mental processes and interpersonal communication could have physical consequences without hypnosis being a distinct neurological disease.
This position anticipated later discussions of mind–body interaction, although the concepts and research methods used today are different from those available in the nineteenth century.
How did their methods differ?
The two schools used different styles of clinical practice and demonstration.
Methods associated with Charcot
Charcot and his colleagues emphasized:
Neurological examination
Clinical classification
Observable physical signs
Staged descriptions of hypnotic behavior
Public lectures and demonstrations
Connections between hypnosis, hysteria, and nervous disorders
The Salpêtrière functioned as a major teaching hospital, and Charcot’s presentations placed strong emphasis on visual observation and the classification of symptoms.
Methods associated with Nancy
Liébeault and Bernheim emphasized:
Verbal suggestion
Direct interaction between practitioner and patient
Therapeutic use of hypnosis
The patient’s responsiveness to instructions
Suggestibility as a common human capacity
The use of hypnosis in medical treatment
The Nancy approach was generally more practical and therapeutic. It focused less on classifying a fixed sequence of pathological stages and more on how suggestion could produce helpful changes.
What was the relationship between hypnosis and hysteria in each school?
For Charcot, hypnosis and hysteria were closely linked. He regarded hysteria as a genuine neurological condition and proposed that hypnotic states could be especially observed in hysterical patients. Hypnosis therefore became part of his broader effort to define and classify neurological disorders.
For the Nancy school, hypnosis was not dependent on hysteria. A person did not need to have hysteria to respond to hypnotic suggestion. The school argued that ordinary people could be hypnotized to varying degrees, making hypnosis a general psychological phenomenon rather than a symptom of a particular illness.
This was one of the most important differences between the schools because it affected how physicians understood both the patient and the treatment. In the Charcot model, hypnotic behavior could point toward pathology. In the Nancy model, hypnotic responsiveness was not, by itself, evidence of disease.
Which school emphasized treatment more strongly?
The Nancy school placed greater emphasis on therapeutic use. Liébeault used hypnosis in medical practice, and Bernheim promoted suggestion as a clinical tool. Their approach encouraged practitioners to consider how verbal guidance and expectation might relieve symptoms or support behavioral change.
Charcot was also a physician and used hypnosis in a medical setting, but his principal contribution was more closely tied to neurological classification and theory. His work aimed to establish hypnosis as a legitimate subject for clinical medicine and scientific investigation.
It is useful to avoid an overly simple contrast in which Charcot was purely theoretical and Nancy was purely practical. Both schools combined observation, theory, and treatment. Their priorities, however, were different.
How did the debate affect later psychology and psychiatry?
The Charcot–Nancy debate helped establish several questions that remained important in later psychology and psychiatry:
Can suggestion change perception, memory, movement, or pain?
Is hypnosis a distinct state or a set of responses shaped by context?
How should clinicians distinguish involuntary behavior from deliberate performance?
How do expectations affect symptoms and treatment?
What is the relationship between psychological experience and bodily functioning?
The Nancy position influenced later work on suggestion and hypnosis, including the study of social interaction and responsiveness to instruction. Charcot’s work influenced neurology, the study of hysteria, and the development of clinical approaches to unusual bodily symptoms.
The debate also contributed to the early development of ideas associated with Pierre Janet, Sigmund Freud, and other researchers. These later thinkers did not simply adopt one school’s position in full. They developed their own accounts of dissociation, unconscious processes, suggestion, memory, and psychological symptoms.
Did Freud support Charcot or Nancy?
Freud studied with Charcot in Paris and was strongly impressed by Charcot’s work on hysteria. He later became interested in hypnosis and suggestion, but his views changed over time.
Freud eventually moved away from relying primarily on hypnosis and developed psychoanalysis. His work cannot be reduced to a simple choice between the Charcot and Nancy schools. His early interest in hysteria reflected Charcot’s influence, while his later concerns about suggestion and the limitations of hypnosis led him toward other methods.
Therefore, it is more accurate to say that Freud was influenced by both the Parisian clinical tradition and the wider nineteenth-century debate over hypnosis, but he ultimately developed a distinct approach.
Were Charcot and Bernheim completely opposed?
They represented opposing theoretical positions, but the historical picture was more complicated than a simple personal or scientific conflict.
Charcot emphasized physiological pathology and the special relationship between hypnosis and hysteria. Bernheim emphasized suggestion and the broad psychological availability of hypnotic responses. Their published arguments often presented these positions sharply, but actual clinical practices could overlap.
For example, both schools used verbal interaction, both observed changes in behavior and bodily response, and both worked with patients in medical settings. In addition, later scholars have shown that the behavior observed in hypnosis can be shaped by many factors at once, including expectation, social setting, practitioner behavior, patient characteristics, and the meaning attached to the procedure.
The “Charcot versus Nancy” contrast is therefore useful as a summary of competing theories, but it should not be treated as a complete description of every practitioner or every clinical event.
Which school is closer to current views of hypnosis?
Some parts of the Nancy school are closer to many current psychological accounts, particularly its emphasis on suggestion, expectation, attention, interpersonal context, and individual differences. Contemporary research commonly treats hypnotic responses as influenced by multiple factors rather than assuming that every hypnotized person enters one uniform pathological state.
At the same time, modern hypnosis research does not simply reproduce the Nancy school’s nineteenth-century theory. Current researchers use different definitions, methods, and experimental standards. They also disagree about how best to explain hypnotic responding. Some theories emphasize altered attention or consciousness, while others emphasize expectations, social interaction, motivation, or combinations of these factors.
Charcot’s work also remains historically important because it drew attention to changes in bodily function, involuntary behavior, and the clinical presentation of symptoms. However, the claim that hypnosis is essentially a pathological condition associated with hysteria is not the dominant framework in contemporary psychological practice.
What can modern readers learn from the dispute?
The dispute offers several lasting lessons.
1. Similar behavior can have different explanations
A person may show reduced pain, altered movement, or temporary unresponsiveness. Observers can agree about what happened while disagreeing about why it happened. Careful interpretation requires more than description alone.
2. Clinical settings influence behavior
Patients respond not only to instructions but also to expectations, authority, social cues, and the surrounding setting. Practitioners may unintentionally shape the responses they are trying to observe.
3. Psychological and physical explanations are not always opposites
A response can be psychologically mediated and physically experienced. Saying that suggestion contributes to a symptom does not automatically mean that the symptom is fake.
4. Historical labels can simplify complex debates
“Charcot school” and “Nancy school” are useful labels, but individual clinicians often held mixed or changing views. Historical analysis should preserve that complexity while still explaining the main differences.
5. Treatment claims require careful evidence
The nineteenth-century debate helped promote hypnosis as a subject of medical study, but historical importance is not proof that every treatment claim from that period remains valid. Current clinical decisions should rely on contemporary evidence, qualified practitioners, and appropriate medical care.
What is the shortest accurate comparison?
The shortest accurate comparison is this:
Charcot viewed hypnosis mainly as a special pathological or physiological condition associated with hysteria, while the Nancy school viewed it mainly as a psychological response to suggestion that could occur in ordinary people as well as in patients.
Charcot emphasized neurological signs, clinical stages, and hysteria. Liébeault and Bernheim emphasized suggestion, responsiveness, and therapeutic communication.
Both schools helped shape the history of hypnosis. The Charcot school strengthened its place in neurology and clinical medicine, while the Nancy school helped establish suggestion as a central psychological concept. Their disagreement also raised questions that remain relevant today: how expectations affect experience, how clinicians influence patients, and how mental processes can affect bodily responses.
Notes
Jean-Martin Charcot, Œuvres complètes de J.-M. Charcot, vol. 9, Leçons sur les maladies du système nerveux faites à la Salpêtrière, Paris: Progrès Médical, 1887. This volume contains Charcot’s lectures on hysteria and related clinical observations at the Salpêtrière.
Hippolyte Bernheim, De la suggestion dans l’état hypnotique et dans l’état de veille, Paris: Octave Doin, 1884. Bernheim’s book presents the Nancy school’s account of hypnosis and suggestion.
Mark S. Micale, Approaching Hysteria: Disease and Its Interpretations, Princeton, NJ: Princeton University Press, 1995. Micale examines nineteenth-century theories of hysteria, including the institutional and interpretive context surrounding Charcot’s work.