10 Unethical And Shocking Experiments Conducted On Children
Throughout history, there have been numerous scientific and psychological experiments conducted on children, many of which have left deep scars. These experiments, often driven by a quest for knowledge or control, have been criticized for their ethical violations, psychological trauma, and sometimes irreversible effects on young minds.
In this article, we delve into ten of the most controversial and ethically dubious experiments conducted on children, revealing the darker side of science and psychology.
The “Monster Study” – Stuttering Experiment Gone Wrong

In 1936, Dr. Wendell Johnson, a speech pathologist, experimented on 22 orphaned children to study stuttering.
The children were divided into two groups: one labeled as “normal speakers” and the other as “stutterers.” While the “normal” group was praised for their speech, the “stutterer” group was harshly criticized and told they could not speak properly.
As a result, several children in the “stutterer” group developed significant speech problems. The psychological trauma inflicted by this experiment led to lifelong issues for many participants, with some even running away from their orphanages in despair. The study became infamous as the “Monster Study,” highlighting the dangerous consequences of unethical research.
The Robbers Cave Experiment – Creating Conflict for Science
In 1954, social psychologist Muzafer Sherif conducted the Robbers Cave Experiment to study intergroup conflict. The experiment involved 22 boys at a summer camp, divided into two groups. Initially, the groups were kept separate and encouraged to bond within their respective teams.
However, when the groups were later introduced to one another, competition was introduced through tournaments, which quickly escalated into hostility, bullying, and violent behavior.
The experiment demonstrated how easily aggression and intergroup hostility could be fostered. Still, it also raised serious ethical concerns about the manipulation of young children for the sake of research.
The Little Albert Experiment – Conditioning Fear
One of the most infamous psychological experiments ever conducted was the Little Albert study, led by John B. Watson and Rosalie Rayner in 1920. The goal was to demonstrate that emotions, such as fear, could be conditioned in humans.
Little Albert, a 9-month-old infant, was exposed to a variety of harmless stimuli, including a white rat, a monkey, and a burning newspaper. Initially, the baby showed no fear. However, the researchers began making loud, frightening noises whenever the baby interacted with the rat.
Eventually, Little Albert became terrified not only of the rat but of any white, fluffy object. This experiment, while revolutionary in its time, has since been criticized for its lack of ethical standards, as it caused long-term psychological harm to the child without any informed consent.
The Bobo Doll Experiment – Social Learning and Aggression

In 1961, psychologist Albert Bandura set out to explore how children learn social behaviors through observation. He conducted the famous Bobo Doll experiment, in which children were shown videos of an adult either aggressively attacking or calmly playing with a large inflatable doll.
The children were then placed in a room with the same doll. Those who had witnessed aggressive behavior were more likely to imitate it. The experiment showed the power of observational learning, but critics argued that exposing children to such violent behavior for the sake of an experiment was ethically dubious and psychologically damaging.
The Willowbrook Hepatitis Experiment – Infecting Children for Research
In the 1950s, Dr. Saul Krugman conducted a horrific experiment at the Willowbrook State School in New York, an institution for children with mental disabilities. Krugman intentionally infected children with hepatitis in an effort to understand the disease better and develop a vaccine.
The children were exposed to the virus through unsanitary conditions, and some were even deliberately fed contaminated food. While Krugman argued that the children were being exposed to the virus under “natural” conditions, the ethics of infecting vulnerable children without their consent, and in many cases, without a clear understanding of the consequences, remain deeply controversial to this day.
Dr. Money’s Gender Experiment – A Tragic Case of Failed Science
The tragic case of David Reimer, known as the subject of Dr. John Money’s gender theory experiment, highlights the devastating consequences of unethical psychological experimentation. When Reimer was only eight months old, a botched circumcision left him with irreversible genital injuries.
Dr. Money, a psychologist, proposed that gender identity was primarily shaped by socialization and suggested that Reimer could be raised as a girl. At the age of 22 months, Reimer underwent surgery to create female genitalia, and he was raised as a girl named Brenda.
Despite being forced to adhere to gender norms and roles, Reimer showed a strong desire to identify as male, suffering severe emotional and psychological trauma. This experiment, which disregarded Reimer’s own sense of self, ended tragically with his suicide at 38, after years of torment.
Electroshock Therapy on Children – A Dark Era in Psychiatry
In the 1960s, Dr. Lauretta Bender, a psychiatrist at Creedmoor Psychiatric Center in New York, conducted electroshock therapy (ECT) on children in an attempt to treat behavioral and emotional issues. Bender believed that ECT could be used to identify early signs of schizophrenia, but her methods were controversial and largely unproven.
Over 100 children were subjected to ECT, which caused them severe psychological and physical harm. Bender’s experiments were criticized for lacking a scientific basis and failing to consider the well-being of the children involved.
The Visual Cliff Experiment – Perception and Fear in Infants
The Visual Cliff experiment, conducted by psychologists Eleanor Gibson and Richard Walk in the 1960s, explored how infants develop depth perception and the ability to sense danger.
The experiment involved a “cliff” made of clear glass with a pattern on one side and a drop-off on the other, simulating the appearance of a dangerous fall. Infants were placed on one side of the glass, and their mothers encouraged them to crawl to the other side.
Most infants hesitated to crawl over the “cliff,” indicating an instinctive avoidance of danger. While the experiment was groundbreaking in understanding infant perception, it raised ethical questions about placing babies in a potentially distressing situation for the sake of research.
A Class Divided – Teaching Racism Through Experiential Learning
In 1968, teacher Jane Elliott conducted a controversial experiment in her all-white classroom to teach her students about racism. Following the assassination of Dr. Martin Luther King Jr., Elliott divided the class based on eye color: blue-eyed children were told they were superior, while brown-eyed children were labeled inferior.
The results were immediate, with blue-eyed children becoming more dominant, while brown-eyed children showed signs of emotional distress. After a few days, Elliott reversed the roles. The experiment was highly controversial, with some parents criticizing the emotional toll it took on the children. Still, many former students later reported that the experience profoundly shaped their understanding of racism and inequality.
The Practice Babies Program – Exploiting Orphaned Infants for Science

Between 1926 and 1947, orphaned babies were used as part of a controversial “practice babies” program in several universities across the United States. These infants were placed in home economics programs where students could practice parenting skills.
The babies were cared for by multiple students, and while they received good nutrition and healthcare, the emotional impact of having no consistent caregiver was significant. Many of the former “practice babies” later reported struggles with attachment and trust, as they had never formed strong emotional bonds with a single caregiver. The ethical implications of using children as “practice” for parenting, without considering the emotional cost to the infants, have been widely criticized.
Key Takeaways
The experiments listed here shed light on some of the darkest chapters in psychological and medical research involving children. While these studies may have advanced knowledge in their respective fields, they also serve as stark reminders of the importance of ethics in research.
Children, as vulnerable subjects, should be protected from harmful experimentation, and these cases underscore the need for greater responsibility and oversight in the scientific community. The legacy of these controversial studies serves as a cautionary tale, urging us always to prioritize the well-being of those involved, especially when they are unable to give consent.
