Little Hans (a pseudonym for Herbert Graf) is the subject of Sigmund Freud’s 1909 case study, Analysis of a Phobia in a Five-Year-Old Boy. The case study, an in-depth investigation of one child, holds a foundational place in the history of psychoanalysis. Freud used it as evidence for infantile sexuality and the Oedipus complex, his theory that a boy unconsciously desires his mother and fears his father as a rival.
Key Takeaways
Background: Little Hans (Herbert Graf) was a 5-year-old boy treated by Freud for an intense phobia of horses, published in 1909 as Analysis of a Phobia in a Five-Year-Old Boy. His father conducted the analysis, corresponding with Freud by letter.
Early Sexual Development: From about age three, Hans showed intense curiosity about “widdlers” (penises), his own and others’. At three and a half, his mother threatened to send for a doctor to cut his off, which Freud later called the origin of his castration anxiety.
The Phobia: Hans developed an intense fear of horses and became too frightened to leave the house. He especially feared white horses with black around the mouth and blinkers, which his father linked to his own moustache and spectacles.
Freud’s Interpretation: Freud read the phobia as an expression of the Oedipus complex. Horses symbolised the father, and the fear of being bitten was castration anxiety in disguise, displaced from father onto horse.
Resolution: Hans recovered once his father reassured him that no castration was intended. At 19, he visited Freud, reported no lasting effects, and had no memory of his childhood phobia at all.
Little Hans was nearly five when Freud met him in person, on 30th March 1908. Freud saw him only that once.
The bulk of the evidence instead comes from letters Hans’s father sent between January and May 1908, drawing on observations going back to when Hans was about three.
Freud was interested in the role of infantile sexuality in child development. The case played a key role in shaping his ideas about the Oedipus complex and the castration complex.
Hans’s parents had close ties to Freud. His mother had been one of Freud’s patients before her marriage, and Max Graf, the father, was a physician and an early, sympathetic follower of Freud’s theories.
Freud had even given Hans a rocking horse for his third birthday, and knew the family well enough to carry it upstairs himself.
This closeness is worth bearing in mind, since it raises questions about bias in how the case was conducted and interpreted.
Freud set two things out first.
Aim: to show that a neurotic symptom, the phobia, was a compromise expressing a repressed wish, curable once interpretation lifted that repression.
Method: a longitudinal case study conducted entirely by correspondence, no control group, no standardised measurement, no independent observer; the material passed through the father’s selection before it reached Freud.
Hans’s Early Development
The first significant reports concerned Hans at age three.
He developed an active interest in his “widdler,” his own and other people’s, asking his mother: “Mummy, have you got a widdler too?”
Widdlers and widdling dominated his fantasies and dreams. Freud thought this mattered.
At about three and a half, his mother threatened to call the doctor to cut off Hans’s widdler if he kept touching it.
Freud later read this as planting the seeds of castration anxiety that would shape the phobia. The threat came from his mother, not his father.
The Birth of Hanna
When Hans was about three and a half, his baby sister Hanna was born. Freud read his reaction as intense jealousy: a new rival for his mother’s love and attention (Freud, 1909).
Hans was preoccupied with where babies came from. He was told the stork story, but he doubted it.
He also became fascinated and disturbed by heavily loaded carts and vans in the street. Freud read these as symbols of his mother’s pregnant body: the “loaded” cart stood for the pregnancy that had produced Hanna.
Hanna’s arrival resurfaces later. It returns in the giraffe fantasy Hans produced during the acute phase of the phobia.
Freud read the big giraffe as the father, the crumpled giraffe as the mother. Hans took the crumpled giraffe for himself.
On Freud’s reading, that expressed a wish to have his mother to himself. But Hans himself volunteered a rival equation in the same exchange: “Hanna’s the crumpled giraffe.” That identifies his baby sister, not his mother, with the toy he seized.
That detail is the seed of a later rereading. Wakefield (2007) revisited the two-giraffe fantasy and argued it fits sibling rivalry, the ongoing competition with Hanna for their mother’s attention, at least as well as a coded Oedipal scene.
Case History: Little Hans’ Phobia
When Hans was nearly five, his father wrote to Freud describing the main problem. “He is afraid a horse will bite him in the street, and this fear seems somehow connected with his having been frightened by a large penis.”
The earliest signs appeared a few days before the phobia fully emerged.
Then came a dream. Hans woke believing his mother had gone away and he could no longer “coax” (cuddle) with her.
In the evenings around this time, he grew unusually anxious, mixed with tenderness toward his mother.
Freud noticed the shift.
He read it as her feelings growing too intense to bear. The feeling was repressed, pushed out of conscious awareness, and resurfaced as a general anxiety.
The Phobia Takes Hold
The phobia crystallised into a specific fear on 8th January, during a walk with his nurse.
Hans grew frightened on the street. On the way home, he confessed: “I was afraid a horse would bite me.”
Later, he identified the incident more precisely: he had watched a heavy bus-horse collapse in the street, kicking violently as it fell, and heard its hooves clattering against the cobbles.
“When the horse in the bus fell down, it gave me such a fright, really! That was when I got the nonsense.”
The family lived opposite a busy coaching inn.
Avoiding horses was almost impossible once Hans went outside. His anxiety centred on white horses, horses with black nosebands, and horses pulling heavily laden carts or furniture vans.
A second incident reinforced his fear.
He had heard a friend’s father warn her not to touch a white horse or it would bite her, as she departed in a horse-drawn cart. That warning fixed a direct link, in Hans’s mind, between white horses and the threat of being bitten.
The pattern was set.
When Hans was taken to see Freud on 30th March 1908, he described not liking horses with “black bits around the mouth.” After the interview, the father recorded Hans saying, “Daddy, don’t trot away from me!”
Over the following weeks, the phobia narrowed.
Hans said he was especially afraid of white horses with black around the mouth, wearing blinkers. His father read this as a reference to his own moustache and spectacles.
The Father’s Role in the Analysis
It was Hans’s father who conducted the day-to-day analysis, not Freud.
He engaged Hans in regular conversations, asked probing questions about his phobia, and sent detailed records to Freud, who interpreted them and advised on how to proceed.
Freud justified this arrangement on the grounds that no outside analyst could have treated a child so young. Only a parent combining authority, affection and scientific interest, he argued, could overcome a five-year-old’s resistance to making unconscious thoughts conscious.
In practice, the father was highly directive. He often interpreted Hans’s dreams and fantasies directly to the boy, suggested what his unconscious wishes meant, and steered the inquiry toward the conclusions he expected.
Freud himself acknowledged the problem: Hans’s attention was deliberately turned in the direction the father anticipated, and Hans had to be told many things he could not articulate himself.
This arrangement has attracted significant critical attention.
Key Fantasies in the Analysis
During the course of the analysis, Hans articulated several vivid fantasies that helped Freud and his father decode his unconscious mind:
1. The Giraffe Fantasy
The Fantasy: Hans dreamed there was a big giraffe and a crumpled giraffe in a room. The big one called out, but Hans took the crumpled giraffe away and sat on it.
Freud’s Interpretation: The big giraffe represented the father, while the crumpled one represented the mother (or her genitals). The act of sitting on it symbolized Hans’s defiant wish to take possession of his mother.
2. The Plumber Fantasy
The Fantasy: Hans imagined that a plumber came, removed his bottom and his “widdler” with pincers, and replaced them with larger ones.
Freud’s Interpretation: This represented his desire to grow into a man with adult genitals like his father, thereby triumphing over his castration anxiety.
3. The Parenting Fantasy
The Fantasy: In a final, triumphant fantasy, Hans imagined that he was married to his mother and had his own children, relegating his father to the role of “Granddaddy.”
Freud’s Interpretation: This fantasy provided a friendly resolution to the Oedipus complex, satisfying his desires while maintaining his affection for his father.
After many letters were exchanged, Freud concluded that Hans feared his father would castrate him as punishment for desiring his mother.
The horse stood in for the father. Hans’s fear of being bitten was this castration fear in disguise.
Freud’s central argument was that the phobia was not really about horses at all. It was a disguised expression of the Oedipus complex, carried by displacement, the defence mechanism that redirects a feeling from its true, threatening object onto a safer stand-in.
Oedipus Complex
Freud held that during the phallic stage, roughly ages 3 to 6, a boy develops an intense sexual attachment to his mother. He comes to see his father as a rival.
The father is far more powerful. The boy fears retaliation in the form of castration.
Hans had an exaggerated affection for his mother: he climbed into her bed and wanted to “coax” with her. At the same time, he harboured a repressed death-wish against his father, unconsciously wanting him to fall down and die just as the horse had done.
Hans both loved and hated his father. That ambivalence produced an anxiety his ego could not tolerate directly.
Displacement and symbolic parallels
Unable to consciously confront his fear of his father, Hans used the defense mechanism of displacement: he unconsciously transferred that fear onto a safer external object, the horse.
Specific visual parallels reinforced the substitution.
The horse’s large size and large “widdler” symbolized the father.
The black noseband and the “black on the horse’s mouth” represented his father’s moustache.
The fear of being bitten by the horse was a disguised expression of his fear of being castrated by his father.
Falling horse and the death wish
The collapsing bus-horse provided the precipitating event for the phobia, but Freud interpreted it as more than a random trauma.
The sight of the falling horse represented Hans’s repressed wish that his father would fall down and die.
His terror at the event reflected guilt and anxiety surrounding this unconscious murderous impulse.
As the analysis progressed, Freud also interpreted Hans’s fear of heavily loaded carts and furniture vans as a symbolic reference to his mother’s pregnancy with his younger sister Hanna. The heavy vehicle represented a pregnant belly, he suggested, and the falling horse kicking its legs represented childbirth.
Protective function of the phobia
Freud noted that the phobia served a practical purpose for Hans.
By being too afraid to go out, he achieved his deepest wish: to remain at home in the constant company of his mother.
Resolution and Later Life
How the Phobia Resolved
Hans recovered after his father, at Freud’s suggestion, explicitly reassured him that no castration was intended.
The father explained the anatomical differences between the sexes and told Hans he bore him no anger for loving his mother.
The anxiety lifted. Hans could leave the house freely again.
Freud credited more than reassurance alone.
He pointed to Hans’s growing identification with his father. As the fear of rivalry gave way to a wish to grow up and become like him, the Oedipal conflict lost its charge.
On Freud’s account, the same process that ended the phobia also completed a piece of normal development.
Identifying with the father, rather than fearing him, was how every boy was supposed to leave the Oedipus complex behind.
Hans as an Adult: The Nineteen-Year Follow-Up
In the spring of 1922, Hans visited Freud’s consulting room at the age of 19.
Freud described him as a “strapping youth,” perfectly healthy and free from psychological troubles or inhibitions.
Puberty left no lasting damage. His childhood neurosis had been intense, but his resilience held. His parents divorced and remarried, and he lived independently, on good terms with both.
His only regret about the family’s break-up was losing closeness with his younger sister Hanna, of whom he was very fond.
Most striking was his complete amnesia. Reading Freud’s published case history, the account felt, in his own words, entirely unknown to him. He did not recognise himself in it. Only the description of a journey to Gmunden sparked a faint “glimmering recollection.”
Herbert Graf, Hans’s real name, went on to a successful career as an opera producer. Freud read this as fascinating: the analysis had not protected the childhood events from amnesia, but had itself been “overtaken by amnesia.”
Significance and Legacy
First child analysis: Hans was Freud’s only child patient, letting him claim to watch the Oedipal drama unfold directly rather than reconstruct it from adult memory.
A lasting method: the case modelled reading a symptom as a meaningful, motivated compromise, an interpretive habit that outlived Freud’s specific claims about Hans.
A teaching fixture: it remains the standard worked example for both the Oedipus complex and the weaknesses of case-study evidence.
Whatever its evidential problems, Little Hans was historically pivotal and remains one of the most taught cases in psychology, for three main reasons.
The First Child Psychoanalysis
This mattered because Hans was Freud’s only child patient.
Most of his developmental theorising up to that point rested on adult patients’ recollections, reconstructed backwards in analysis. Little Hans let Freud claim, for once, to watch the Oedipal drama unfold in a living child.
That claim mattered.
It was the first published psychoanalytic case study of a child.
It was Freud’s chief claim to observe infantile sexuality directly, not reconstruct it from adult memories.
The case became a template. Later work treated children’s play, questions and fantasies as analysable psychological material in their own right.
It is also a direct ancestor of child psychoanalysis as a field.
Anna Freud and Melanie Klein each developed rival techniques for analysing young children, through play and observation, and both took Little Hans as their starting point.
A Model for Symptom Interpretation
The case also gave psychoanalysis a lasting method: reading a symptom as a meaningful, motivated compromise, not a meaningless malfunction.
That interpretive stance outlived many of Freud’s specific claims about Hans himself.
The template is visible in the reading Freud applied to Hans. The logic was simple.
A forbidden wish (desire for the mother, rivalry with the father) meets a danger (castration), and triggers a defence (displacement onto a safer object).
The wish resurfaces in disguised form: the horse, the falling horse, the loaded carts.
Nothing in the phobia was treated as noise.
Each detail could be decoded, not dismissed.
That habit of reading behaviour for hidden motive outlasted the Oedipal machinery used to generate it. Later clinicians rejected castration anxiety and infantile sexuality outright.
Many kept the interpretive habit anyway.
They still read a child’s symptom, play or fantasy as expressing a conflict or need, not only as something to correct directly. That interpretive stance is Little Hans’s most durable legacy.
A Teaching Fixture
In modern psychology education, Little Hans does three jobs at once.
Case-study methodology: its richness and its flaws together show what the design can and cannot deliver, unmatched depth on one side, low generalisability, observer bias and unfalsifiability on the other.
Evaluating psychodynamic evidence: students learn to ask who collected the data, what they already believed, and whether a rival account fits the same facts more economically.
A live scholarly object: a 2007 centennial special issue of the Journal of the American Psychoanalytic Association reopened the case using archival material.
Blum (2007), Ross (2007) and Wakefield (2007) relocated Hans’s distress in family conflict and attachment. Bierman (2007) argued his improvement may owe as much to sustained parental attention as to any Oedipal insight.
A century on, Little Hans functions less as proof of a theory than as a permanent case study in how psychological evidence should be weighed.
Clinical Legacy: From Interpretation to Treatment
That critique had a payoff Freud never intended. Once Wolpe and Rachman (1960) reframed Hans’s phobia as a learned, conditioned fear, a practical conclusion followed.
If a phobia is learned, it can be unlearned through the same associative mechanisms, without years of interpreting repressed material. This is the logic behind systematic desensitisation and the graded, exposure-based treatments that remain the first-line approach to childhood specific phobia today.
Hans himself never received such treatment. But his case, read against Freud’s own interpretation, helped supply its rationale.
Critical Evaluation
Freud’s case for Hans rests on real strengths and serious weaknesses. The sections below weigh both, point by point.
Some detail supports Freud: a handful of Hans’s own associations, the “trotting” remark, the moustache, the blinkers, do fit the horse-father link Freud proposed (Brown, 1965).
Biased sample: the theory rests on one atypical child, so it cannot ground a universal claim about development.
Confirmation bias: Freud had already published the Oedipus complex four years earlier, so the case tested a belief already held, not a neutral observation.
Leading interviewer: Freud himself conceded that Hans’s father steered the boy toward the expected answers, which undercuts the evidence’s independence.
Unfalsifiable: any contradicting evidence could be relabelled “resistance,” so the interpretation could never, in principle, be disproven.
Ethical problems: a five-year-old could not consent, and his own father acted as both parent and therapist.
Selective reporting: later archival material suggests family conflict and trauma the original case downplayed.
Support for Freud (Brown, 1965)
Brown (1965) identified several behavioral details consistent with Freud’s interpretation:
1 . In one instance, Hans said to his father –“ Daddy don’t trot away from me ” as he got up from the table.
2 . Hans particularly feared horses with black around the mouth. Han’s father had a moustache.
3. Hans feared horses with blinkers on. Freud noted that the father wore spectacles which he took to resemble blinkers to the child.
4 . The father’s skin resembled white horses rather than dark ones. In fact, Hans said, “Daddy, you are so lovely. You are so white”.
5 . The father and child had often played at “horses” together. During the game the father would take the role of horse, the son that of the rider.
Biased Sample
A major flaw in Freud’s developmental theory is that it rested almost entirely on the retrospective memories of adult patients. This makes Little Hans exceptionally important as Freud’s only actual child patient.
The case study still carries significant methodological limitations, though. As a single case, it lacks population validity: findings from one child cannot be generalized to children at large.
Critics at the time also argued Hans was not a “normal” child but one predisposed to neurosis, making universal claims about the Oedipus complex scientifically unjustifiable.
Research Bias
The data quality is further compromised by confirmation bias, the tendency to read ambiguous evidence as supporting a belief already held.
Freud had formulated the Oedipus complex four years earlier, in his 1905 Three Essays on the Theory of Sexuality. The father was already a committed follower of his ideas.
There is a strong case that Freud and the father approached the analysis seeking confirmation of a pre-existing theory, rather than observing the child objectively.
Children are highly suggestible, particularly toward a parent. The father’s leading questions and direct interpretations, openly acknowledged by Freud himself, almost certainly shaped Hans’s responses in the expected direction.
Freud admitted this detracted from the objective evidential value of the study, though he defended the father’s interventions as therapeutically necessary.
Freud’s Own Defence Against the Suggestion Charge
The “leading interviewer” objection is not a modern add-on. Freud raised it himself, inside the case history, and answered it in his own words.
The charge: Hans would “allow anything to be forced upon him” out of gratitude to his father, so “none of his assertions can have any evidential value” (Freud, 1909).
His concession: Hans “had to be told many things that he could not say himself,” which “detracts from the evidential value of the analysis” (Freud, 1909).
His redefinition: a psycho-analysis “is not an impartial scientific investigation, but a therapeutic measure,” whose “essence is not to prove anything, but merely to alter something” (Freud, 1909).
His counter-evidence: material the father could not have implanted, including Hans’s plumber fantasies, which the boy raised unprompted.
His own limit: “I shall not succeed in convincing any one who will not let himself be convinced” (Freud, 1909).
Unfalsifiability
A further criticism concerns unfalsifiability.
Freud’s interpretation that Hans’s fear of horses was a displaced fear of his father due to the Oedipus complex cannot be empirically tested or proven wrong.
Contradictory evidence could always be explained away as “resistance” or “denial” on the part of the patient, meaning the theory is immune to disconfirmation.
For this reason, critics argue the case lacks the scientific rigour required to support universal claims about child development.
Even if Hans did have a fully developed Oedipus complex, this would demonstrate only that such a complex might exist in one case. It would not show that it is universal, as Freud claimed.
Ethical and Consent Issues
By modern standards, the case also raises real ethical concerns. A young child cannot give informed consent, and Hans’s analysis was conducted by his own father.
This created a profound dual relationship: the roles of parent and therapist were hopelessly entangled. Hans’s questions about sex and his own body were pursued partly to serve the adults’ theoretical interest.
There was no independent safeguard for the child’s welfare against the investigators’ commitment to a hypothesis.
The imbalance was structural, not incidental. Freud met Hans in person only once, on 30th March 1908; every other exchange about the boy’s body, his fears and his fantasies passed through his father.
The father was simultaneously parent, questioner, and the person the child would naturally want to please. A modern research-ethics review would treat a parent-administered “treatment” of this kind, with no independent clinician present for the day-to-day work, as an unmanaged conflict of interest.
The Freud Archives
In 2004, the Freud Archives released documents that helped complete the context of the case (Hans’s real name was Herbert Graf).
The released material included a 1952 interview transcript with Max Graf (Hans’s father), conducted by Kurt Eissler.
They can alter how the original case is read. Hans’s mother, for example, had been a patient of Freud’s herself.
That detail stands out.
Freud had given little Hans a rocking horse.
It was for his third birthday, and Freud knew the family well enough to carry it up the stairs himself. Yet the published case never mentions it, despite Hans’s horse phobia.
Disclosing it would not have broken confidentiality for the family or for Freud. The archived documents reveal real conflict within the Graf family.
Blum (2007, p. 749) concludes that:
“Trauma, child abuse [of Hans’s little sister], parental strife, and the preoedipal mother-child relationship emerge as important issues that intensified Hans’s pathogenic oedipal conflicts and trauma. With limited, yet remarkable help from his father and Freud, Little Hans nevertheless had the ego strength and resilience to resolve his phobia, resume progressive development, and forge a successful creative career.”
Alternative Explanation: Behaviorism
A simpler account of Hans’s phobia can be offered through behaviorist principles, without reference to unconscious conflict.
Acquisition: witnessing the bus-horse collapse was an unconditioned stimulus producing extreme fright. Through association, horses became a conditioned stimulus that automatically triggered fear.
Spread: stimulus generalisation explains how Hans’s fear broadened from that specific horse to all horses and to heavy vehicles resembling the bus.
Maintenance: by refusing to leave the house, Hans avoided horses and felt immediate relief. That negative reinforcement perpetuated and strengthened his avoidance.
Wolpe and Rachman (1960) explicitly compared this case to Watson and Rayner’s “Little Albert” experiment, in which a baby was conditioned to fear a white rat through loud noise. That fear then generalised to other furry objects.
To a behaviorist, Little Hans was simply a naturally occurring version of Little Albert.
Freud’s own case history adds a further detail. During the acute phase of the phobia, Hans had his tonsils removed, and Freud recorded that afterwards “the phobia has grown very much worse again” (Freud, 1909).
The white-gowned surgeon may, on this reading, have reinforced Hans’s fear of specifically white horses.
Alternative Explanation: Bowlby’s Attachment Theory
He argued that Hans’s phobia was rooted in separation anxiety, not castration anxiety, and that Freud had misdiagnosed the boy. Crucially, Bowlby built his counter-argument entirely on evidence already inside Freud’s own published text.
The evidence was already there.
Bowlby found that Hans’s mother regularly used threats of abandonment as discipline.
Hans told his father, “Mummy’s told me she won’t come back.” The father replied, “She said that because you were naughty.”
The week before the phobia emerged, Hans had woken crying from a dream that his mother was gone. He repeatedly cried in the street, begging to be taken home to “coax” with her.
These were not symbolic or displaced anxieties, in Bowlby’s view. They were responses to genuine, well-founded fears of maternal desertion.
Bowlby also noted that the actual castration threats in the case came from the mother, not the father. This undermines Freud’s account of who Hans feared, and why.
Hans’s specific fear of white horses biting him was linked to witnessing his friend Lizzi depart in a horse-drawn cart, after her father warned her the horse would bite.
To Bowlby, horses meant departures, not paternal authority.
Hans’s refusal to leave the house was, on this view, a logical survival strategy. Staying home meant his mother could not leave while he was away. No unconscious Oedipal conflict was needed to explain it.
A contemporary attachment reading extends this. Wakefield (2007) reread Hans’s giraffe fantasy through attachment and sibling rivalry, the competition for his mother’s attention after Hanna’s birth. On this view, the fantasy is not a coded Oedipal scene at all.
Weighing the Rival Accounts
None of these alternatives is decisive alone. Two stand out as the most economical: the behaviourist account (Wolpe & Rachman, 1960) and Bowlby’s own attachment account (1973).
Both explain the same facts (the triggering incident, the spread to loaded vehicles, the persistence of avoidance) without an unobservable Oedipal drama. The explicit castration threat in the record came from Hans’s mother, not his father, a problem neither rival theory shares.
A Cognitive Reading
A cognitive account offers a third alternative to Freud’s theory. It notes that a phobia is not just a learned stimulus-response link but involves catastrophic beliefs and biased threat appraisal.
A frightened five-year-old who has just seen a huge animal collapse violently may form the irrational belief that horses are dangerous and will bite. His attention then becomes biased toward the feared cues, such as the horse’s mouth and size.
On this view, the phobia is maintained by Hans’s maladaptive thoughts about horses, not by unconscious wishes. This anticipates the modern cognitive-behavioural model of phobia.
On this reading, the visual details Freud read as displaced castration symbolism do a plainer job. The black muzzle and the blinkers are not disguised references to a moustache and spectacles.
They are simply the most vivid, most threatening features of the animal that collapsed in front of him — the features an anxious child’s attention would lock onto and rehearse.
The cognitive account also carries different treatment implications. Where Freud’s model called for interpreting a repressed wish, a cognitive-behavioural approach would target the belief itself.
Gradual, controlled exposure to horses, paired with corrective information that gently disconfirms the expectation of being bitten, is the logic behind modern exposure-based treatment of childhood phobias.
Contemporary Research
Three modern literatures test the ideas behind this case.
They ask how children learn fear from parents, whether repression holds up as a mechanism, and how leading questions distort a child’s account.
Do Children Learn Fear From Their Parents?
Aim: Alcan et al. (2025) tested whether vicarious learning, being told something is dangerous, and reinforcement from parents predict a child’s anxiety sensitivity.
Method: A systematic review of 28 studies on parent-to-child fear learning, with 10 entering a quantitative meta-analysis.
Results: Fear-learning pathways were modestly associated with anxiety sensitivity, more strongly in children than adults; no single pathway stood out.
Conclusion: Fear-related vulnerability can pass from parent to child through ordinary learning, with no unconscious content required.
Most of the underlying studies were cross-sectional.
So the review shows association, not cause. Experimental work with 7- to 10-year-olds fills that gap (Askew et al., 2016).
Children who watched an adult react fearfully to a novel animal acquired fear much like directly conditioned fear.
Applied to Hans, this makes the behaviourist reading considerably more concrete than a general appeal to “conditioning.”
Does Repression Hold Up as a Mechanism?
Freud blamed the recovery entirely on repression.
Reviewing decades of research on the concept, Otgaar et al. (2019) found that repression has never accumulated the evidence its continuing popularity implies.
It survives largely by resurfacing under relabelled terms such as “dissociative amnesia,” not by new data.
On the best current review evidence, Freud’s mechanism for Hans’s recovery is a persistent clinical belief, not an established fact.
Does a Leading Interviewer Distort a Child’s Account?
This article’s central criticism is that Hans’s father was a biased, leading interviewer.
Saywitz et al. (2019) reviewed and meta-analysed 15 experimental studies of interviewer behaviour.
Supportive, non-suggestive interviewing improved children’s accuracy; suggestive interviewing degraded it.
The review cannot re-interview Hans. But it converts a century-old methodological worry into a quantified, replicated effect.
References
Alcan, E., Gessner, J., Stangier, G., Benke, C., Busin, J., Christiansen, H., & Melzig, C. A. (2025). The association between parent-to-child fear learning pathways and anxiety sensitivity: A systematic review and meta-analysis. Clinical Child and Family Psychology Review, 28(2), 322–348. https://doi.org/10.1007/s10567-025-00517-7
Askew, C., Reynolds, G., Fielding-Smith, S., & Field, A. P. (2016). Inhibition of vicariously learned fear in children using positive modeling and prior exposure. Journal of Abnormal Psychology, 125(2), 279–291. https://doi.org/10.1037/abn0000131
Bierman, J. S. (2007). The psychoanalytic process in the treatment of Little Hans. Psychoanalytic Study of the Child, 62, 92–110.
Bowlby, J. (1973). Attachment and loss: Vol. 2. Separation: Anxiety and anger. Hogarth Press.
Brown, R. (1965). Social Psychology. Collier Macmillan.
Freud, S. (1905). Three essays on the theory of sexuality (Standard Edition, Vol. 7, pp. 123–246). Hogarth Press.
Freud, S. (1909). Analysis of a phobia in a five-year-old boy (Standard Edition, Vol. 10, pp. 1–150). Hogarth Press.
Graf, H. (1959). Interview by Kurt Eissler. Box R1, Sigmund Freud Papers. Sigmund Freud Collection, Manuscript Division, Library of Congress, Washington, DC.
Graf, M. (1952). Interview by Kurt Eissler. Box 112, Sigmund Freud Papers. Sigmund Freud Collection, Manuscript Division, Library of Congress, Washington, DC.
Otgaar, H., Howe, M. L., Patihis, L., Merckelbach, H., Lynn, S. J., Lilienfeld, S. O., & Loftus, E. F. (2019). The return of the repressed: The persistent and problematic claims of long-forgotten trauma. Perspectives on Psychological Science, 14(6), 1072–1095. https://doi.org/10.1177/1745691619862306
Saywitz, K. J., Wells, C. R., Larson, R. P., & Hobbs, S. D. (2019). Effects of interviewer support on children’s memory and suggestibility: Systematic review and meta-analyses of experimental research. Trauma, Violence, & Abuse, 20(1), 22–39. https://doi.org/10.1177/1524838016683457
Wakefield, J. C. (2007). Attachment and sibling rivalry in Little Hans: The fantasy of the two giraffes revisited. Journal of the American Psychoanalytic Association, 55(3), 821–848.
Wolpe, J., & Rachman, S. (1960). Psychoanalytic “evidence”: A critique based on Freud’s case of Little Hans. Journal of Nervous and Mental Disease, 131(2), 135–148. https://doi.org/10.1097/00005053-196008000-00007
BSc (Hons) Psychology, MSc Psychology of Education
Associate Editor for Simply Psychology
Olivia Guy-Evans is a writer and associate editor for Simply Psychology, where she contributes accessible content on psychological topics. She is also an autistic PhD student at the University of Birmingham, researching autistic camouflaging in higher education.
BSc (Hons) Psychology, MRes, PhD, University of Manchester
Saul McLeod, PhD, is a qualified psychology teacher with over 18 years of experience in further and higher education. He has been published in peer-reviewed journals, including the Journal of Clinical Psychology.
