
An 1883 phrenology chart.
Phrenology (from
Greek: φρήν,
phrēn, "mind"; and λόγος,
logos, "knowledge") is a
hypothesis stating that the personality traits of a person can be derived from the shape of the skull. It is now considered a
pseudoscience. Developed by German physician
Franz Joseph Gall in 1796, the discipline was very popular in the 19th century. In 1843,
François Magendie referred to phrenology as "
a pseudo-science of the present day." Phrenological thinking was, however, influential in 19th-century psychiatry and modern neuroscience.
[Simpson, D. (2005) Phrenology and the neurosciences: contributions of F. J. Gall and J. G. Spurzheim ANZ Journal of Surgery. Oxford. Vol.75.6; p.475]Phrenology is based on the concept that the
brain is the organ of the
mind, and that certain brain areas have localized, specific
functions or modules (see
modularity of mind). Phrenologists believed that the mind has a set of different
mental faculties, with each particular faculty represented in a different area of the brain. These areas were said to be proportional to a person's propensities, and the importance of the given mental faculty. It was believed that the
cranial bone conformed in order to accommodate the different sizes of these particular areas of the brain in different individuals, so that a person's capacity for a given personality trait could be determined simply by measuring the area of the skull that overlies the corresponding area of the brain.
As a type of theory of personality, phrenology can be considered to be an advance over the old medical theory of the four
humours. However, it does not have any predictive power and is therefore dismissed as
quackery by modern scientific discourse.
Phrenology, which focuses on personality and character, should be distinguished from
craniometry, which is the study of skull size, weight and shape, and
physiognomy, the study of facial features. However, researchers of these disciplines have claimed the ability to predict personality traits or intelligence (in fields such as
anthropology/
ethnology), and are alleged to have sometimes comprised a sort of
scientific racism.
History

A definition of phrenology with chart from Webster's Academic Dictionary, circa 1895
The attempt to locate faculties of personality within the head can be compared to the attempt of
philosopher Aristotle of
ancient Greece to localize anger in the liver. However, the first attempts to measure skull shape scientifically, and its alleged relation to character, were performed by the
German physician
Franz Joseph Gall (1758-1828), who is considered the initiator of phrenology. Gall was one of the first researchers to consider the brain to be the source of all mental activity.
In 1809 Gall began writing his greatest work
"The Anatomy and Physiology of the Nervous System in General, and of the Brain in Particular, with Observations upon the possibility of ascertaining the several Intellectual and Moral Dispositions of Man and Animal, by the configuration of their Heads. It was not published until 1819. In the introduction to this main work, Gall makes the following statement in regard to his doctrinal principles, which comprise the intellectual basis of phrenology:
- That moral and intellectual faculties are innate
- That their exercise or manifestation depends on organization
- That the brain is the organ of all the propensities, sentiments and faculties
- That the brain is composed of as many particular organs as there are propensities, sentiments and faculties which differ essentially from each other.
- That the form of the head or cranium represents the form of the brain, and thus reflects the relative development of the brain organs.
Through careful observation and extensive experimentation, Gall believed he had established a relationship between aspects of character, called
faculties, to precise
organs in the
brain. Gall's most important collaborator was
Johann Spurzheim (1776-1832), who disseminated phrenology successfully in the
United Kingdom and the
United States. He popularized the term
phrenology (from the Greek word "phrenos" meaning "brain": compare with the word "schizophrenia").
Other significant authors include the
Scottish brothers
George Combe (1788-1858) and
Andrew Combe (1797-1847), who initiated the
Phrenological Society of Edinburgh. George Combe was the author of some of the most popular works on phrenology and mental hygiene, e.g.,
The Constitution of Man and
Elements of Phrenology.
The American brothers
Lorenzo Niles Fowler (1811-1896) and
Orson Squire Fowler (1809-1887) were leading phrenologists of their time. Orson, together with associates
Samuel Wells and
Nelson Sizer, ran the phrenological business and publishing house
Fowlers & Wells in
New York City. Meanwhile, Lorenzo spent much of his life in England where he initiated the famous phrenological publishing house, L.N Fowler & Co., and gained considerable fame with his
phrenology head (a
china head showing the phrenological faculties), which has become a symbol of the discipline.

1848 edition of American Phrenological Journal published by Fowlers & Wells, New York City.
In the
Victorian age, phrenology as a psychology was taken seriously and permeated the literature and novels of the day. Many prominent public figures such as the Reverend Henry Ward Beecher (a college classmate and initial partner of Orson Fowler) promoted phrenology actively as a source of psychological insight and self-knowledge. British Prime Minister
David Lloyd George was known to have a keen interest in the subject, once contriving a meeting with
C.P. Snow after noticing that the author had "an interestingly shaped head." Thousands of people consulted phrenologists for advice in various matters, such as hiring personnel or finding suitable marriage partners. As such, phrenology as a brain science waned but developed into the popular psychology of the 19th century and functioned in approximately the same way as psychoanalysis permeated social thought and relationships a century later. Beginning during the 1840s, phrenology in North America became part of a counter-culture movement evident in the appearance of new dress styles, communes, mesmerism, and a revival of herbal remedies. Orson Fowler himself was known for his octogonal house.
Throughout, however, phrenology was rejected by mainstream academia, and was for instance excluded from the
British Association for the Advancement of Science. The popularity of phrenology fluctuated during the 19th century, with some researchers comparing the field to
astrology,
chiromancy, or merely a fairground attraction, while others wrote serious scientific articles on the subject. The last phrenology book in English to receive serious consideration by mainstream science was The Brain and Its Physiology (1846) by Daniel Noble, but his friend, William Carpenter, wrote a lengthy review article that initiated his realization that phrenology could not be considered a serious science, and his later books reflect his acceptance of British psycho-physiology.
Phrenology was also very popular in the United States, where automatic devices for phrenological analysis were devised. One such
Automatic Electric Phrenometer is displayed in the in the
Science Museum of Minnesota in
Saint Paul.
During the early 20th century, a revival of interest in phrenology occurred on the fringe, partly because of studies of
evolution,
criminology and
anthropology (as pursued by
Cesare Lombroso). The most famous British phrenologist of the 20th century was the
London psychiatrist
Bernard Hollander (1864-1934). His main works,
The Mental Function of the Brain (1901) and
Scientific Phrenology (1902) are an appraisal of Gall's teachings. Hollander introduced a quantitative approach to the phrenological diagnosis, defining a method for measuring the skull, and comparing the measurements with statistical averages.
In Belgium,
Paul Bouts (1900-1999) began studying phrenology from a pedagogical background, using the phrenological analysis to define an individual
pedagogy. Combining phrenology with
typology and
graphology, he coined a global approach known as
psychognomy.
Bouts, a
Roman Catholic priest, became the main promoter of renewed 20th-century interest in phrenology and psychognomy in Belgium. He was also active in
Brazil and
Canada, where he founded institutes for characterology. His works
Psychognomie and
Les Grandioses Destinées individuelle et humaine dans la lumière de la Caractérologie et de l'Evolution cérébro-cranienne are considered standard works in the field. In the latter work, which examines the subject of
paleoanthropology, Bouts developed a
teleological and
orthogenetical view on a
perfecting evolution, from the
paleo-encephalical skull shapes of
prehistoric man, which he considered still prevalent in
criminals and savages, towards a higher form of mankind.
Bouts died on
March 7,
1999, after which his work has been continued by the Dutch foundation PPP (
Per Pulchritudinem in Pulchritudine), operated by Anette Müller, one of Bouts' students.
During the 1930s, Belgian colonial authorities in Rwanda used phrenology to explain the so-called superiority of Tutsis over Hutus.
Empirical refutation induced most scientists to abandon phrenology as a science by the early 20th century. For example, various cases were observed of clearly aggressive persons displaying a well-developed "
benevolent organ", findings that contradicted the logic of the discipline. With advances in the studies of
psychology and
psychiatry, many scientists became skeptical of the claim that human character can be determined by simple, external measures.
On Monday,
October 1,
2007 the State of Michigan began to impose a tax on phrenology services.
Method
Phrenology was a complex process that involved feeling the bumps in the skull to determine an individual's psychological attributes.
Franz Joseph Gall first believed that the brain was made up of 27 individual 'organs' that created one's
personality, with the first 19 of these 'organs' believed to exist in other animal species. Phrenologists would run their fingertips and palms over the skulls of their patients to feel for enlargements or indentations. The phrenologist would usually take measurements of the overall head size using a
caliper. With this information, the phrenologist would assess the character and temperament of the patient and address each of the 27 "brain organs". This type of analysis was used to predict the kinds of relationships and behaviors to which the patient was prone. In its heyday during the 1820s-1840s, phrenology was often used to predict a child's future life, to assess prospective marriage partners and to provide background checks for job applicants.
Gall's list of the "brain organs" was lengthy and specific, as he believed that each bump or indentation in a patient's skull corresponded to his "brain map". An enlarged bump meant that the patient utilized that particular "
organ" extensively. The 27 areas were varied in function, from sense of color, to the likelihood of religiosity, to the potential to commit
murder. Each of the 27 "brain organs" was located in a specific area of the skull. As a phrenologist felt the skull, he could refer to a numbered diagram showing where each functional area was believed to be located.
The 27 "brain organs" were:
- The carnivorous instinct; the tendency to murder.
- Guile; acuteness; cleverness.
- The feeling of property; the instinct of stocking up on food (in animals); covetousness; the tendency to steal.
- Pride; arrogance; haughtiness; love of authority; loftiness.
- Vanity; ambition; love of glory (a quality "beneficent for the individual and for society").
- Circumspection; forethought.
- The memory of things; the memory of facts; educability; perfectibility.
- The sense of places; of space proportions.
- The memory of people; the sense of people.
- The sense of language; of speech.
- The sense of sounds; the gift of music.
- The sense of connectedness between numbers.
- The sense of mechanics, of construction; the talent for architecture.
- Kindness; benevolence; gentleness; compassion; sensitivity; moral sense.
- The faculty to imitate; the mimic.
- The firmness of purpose; constancy; perseverance; obstinacy.
Phrenology as a pseudoscience
Phrenology has long been dismissed as a
pseudoscience because of neurological advances. During the discipline's heyday, phrenologists including
Gall committed many
errors. In his book
The Beginner's Guide to Scientific Method Stephen S. Carey explains that pseudoscience can be defined as "fallacious applications of the
scientific method" by today's standards. Phrenologists made dubious inferences between bumps in people's skulls and their
personalities, claiming that the bumps were the determinant of personality. Some of the more valid assumptions of phrenology (e.g., that mental processes can be localized in the brain) remain in modern
neuroimaging techniques and
modularity of mind theory. Through advancements in modern
medicine and
neuroscience, scientists have generally concluded that feeling conformations of the outer skull is not an accurate predictor of behavior.
Popular culture
- In Bram Stoker's Dracula, several characters make phrenological observations in describing other characters.
- Charlotte Brontë, as well as her two famous Brontë sisters, display the belief in phrenology in their works.
- Popular Indian-English writer Amitav Ghosh's first novel The Circle of Reason (1986) has one of the main characters, Balaram practice phrenology obsessively.
- Terry Pratchett, in his Discworld series of books, describes the practice of Retro-phrenology as the practice of altering someone's character by giving them bumps on the head. You can go into a shop in Ankh-Morpork and order an artistic temperament with a tendency to introspection. What you actually get is hit on the head with a large hammer, but it keeps the money in circulation and gives people something to do.
- The comedy-musical play Heid (pronounced 'Heed', a Scottish inflection of the word 'Head') by Forbes Masson alluded to the phrenology work of George Combe, citing the pseudoscience's influence on a young Charles Darwin as an inspiration for writers.
- The film Pi depicts the main character, Max, outlining a portion of his skull according to a phrenology chart and proceeding to drill into that section to destroy a part of his brain that contained important information of a mathematical sequence that he thought nobody should know.
- In the film Men at Work, the character of Charlie Sheen claims to be a phrenologist to his love interest, unwilling to confess his real profession (garbage collector). When she seem skeptical, he goes so far as to give her a phrenology reading, offering hit or miss insights, including her love for mangos.
- In the novel Moby-Dick by Herman Melville many references are made to phrenology and the narrator identifies himself as an amateur phrenologist.
See also