Mental Retardation - History of The Terminology

History of The Terminology

Several traditional terms denoting varying degrees of mental deficiency long predate psychiatry. All terms have been subjected to the euphemism treadmill. In common usage, these terms are simple forms of abuse. They are often encountered in old documents such as books, academic papers, and census forms (for example, the British census of 1901 has a column heading including the terms imbecile and feeble-minded).

Negative connotations associated with these numerous terms for mental retardation reflect society's attitude about the condition. There are competing desires among elements of society, some of whom seek neutral medical terms, and others who want to use such terms as weapons with which to abuse people.

Today, the term retarded is slowly being replaced by new words like special or challenged. The term developmental delay is popular among caretakers and parents of individuals with mental retardation. Using the word delay is preferred over disability by many people, because delay suggests that a person is slowly reaching his or her full potential, rather than someone who has been disabled.

Usage has changed over the years, and differed from country to country, which needs to be borne in mind when looking at older books and papers. For example, mental retardation in some contexts covers the whole field, but previously applied to what is now the mild MR group. Feeble-minded used to mean mild MR in the UK, and once applied in the US to the whole field. "Borderline mental retardation" is not currently defined, but the term may be used to apply to people with IQs in the 70s. People with IQs of 70 to 85 used to be eligible for special consideration in the US public education system on grounds of mental retardation.

• Cretin is the oldest and comes from a dialectal French word for Christian. The implication was that people with significant intellectual or developmental disabilities were "still human" (or "still Christian") and deserved to be treated with basic human dignity. Individuals with the condition were considered to be incapable of sinning, thus "christ-like" in their disposition. This term is not used in scientific endeavors since the middle of the 20th century and is generally considered a term of abuse. Although cretin is no longer in use, the term cretinism is still used to refer to the mental and physical retardation resulting from untreated congenital hypothyroidism.
• Amentia has a long history, mostly associated with dementia. The difference between amentia and dementia was originally defined by time of onset. Amentia was the term used to denote an individual who developed deficits in mental functioning early in life, while dementia included individuals who develop mental deficiencies as adults. During the 1890s, amentia meant someone who was born with mental deficiencies. By 1912, ament was a classification lumping "idiots, imbeciles, and feeble minded" individuals in a category separate from a dement classification, in which the onset is later in life.
• Idiot indicated the greatest degree of intellectual disability, where the mental age is two years or less, and the person cannot guard himself or herself against common physical dangers. The term was gradually replaced by the term profound mental retardation.
• Imbecile indicated an intellectual disability less extreme than idiocy and not necessarily inherited. It is now usually subdivided into two categories, known as severe mental retardation and moderate mental retardation.
• Moron was defined by the American Association for the Study of the Feeble-minded in 1910, following work by Henry H. Goddard, as the term for an adult with a mental age between eight and twelve; mild mental retardation is now the term for this condition. Alternative definitions of these terms based on IQ were also used. This group was known in UK law from 1911 to 1959/60 as feeble-minded.
• Mongolism was a medical term used to identify someone with Down syndrome. The Mongolian People's Republic requested that the medical community cease use of the term as a referent to mental retardation. Their request was granted in the 1960s, when the World Health Organization agreed that the term should cease being used within the medical community.
• In the field of special education, educable (or "educable mentally retarded") refers to MR students with IQs of approximately 50–75 who can progress academically to a late elementary level. Trainable (or "trainable mentally retarded") refers to students whose IQs fall below 50 but who are still capable of learning personal hygiene and other living skills in a sheltered setting, such as a group home. In many areas, these terms have been replaced by use of "moderate" and "severe" mental retardation. While the names change, the meaning stays roughly the same in practice.
• Retarded comes from the Latin retardare, "to make slow, delay, keep back, or hinder," so mental retardation means the same as mentally delayed. The term was recorded in 1426 as a "fact or action of making slower in movement or time." The first record of retarded in relation to being mentally slow was in 1895. The term retarded was used to replace terms like idiot, moron, and imbecile because retarded was not (then) a derogatory term. By the 1960s, however, the term had taken on a partially derogatory meaning as well. The noun retard is particularly seen as pejorative; as of 2010, the Special Olympics, Best Buddies and over 100 other organizations are striving to eliminate the use of the "r-word" (analogous to the "n-word") in everyday conversation.

The term mental retardation is a diagnostic term denoting the group of disconnected categories of mental functioning such as idiot, imbecile, and moron derived from early IQ tests, which acquired pejorative connotations in popular discourse. The term mental retardation acquired pejorative and shameful connotations over the last few decades due to the use of the words retarded and retard as insults. This may have contributed to its replacement with euphemisms such as mentally challenged or intellectually disabled. While developmental disability includes many other disorders (see below), developmental disability and developmental delay (for people under the age of 18), are generally considered more polite terms than mental retardation.