Scientific Metric → Institutional Diagnostic

 → Public Slur / Stigma → Term Abandoned

1. "Idiotic," "Imbecile," and "Moron" (Binet-Simon Scale, 1905–1910)

When Alfred Binet and Theodore Simon developed the first intelligence test, and Henry Goddard later translated it for use in the US, they established strict clinical classifications based on mental age:

 

Moron: Highest functioning category (mental age 8–12). Coined by Goddard from the Greek moors (foolish).

 

Imbecile: Medium category (mental age 3–7). From the Latin imbecilic ("weak" or "feeble").

 

Idiot: Lowest functioning category (mental age 0–2). From the Greek idiotes (private person, layman, non-professional).

 

The Shift: These terms were designed to categorise individuals for institutional placement and specialised education. However, because they framed human worth purely around cognitive productivity, they quickly became weaponised. By mid-century, they were discarded by clinicians as they became standard verbal abuse.

 

2. "Handicapped" (19th to 20th Century)

Origins: Derived from the 17th-century game Hand-in-Cap, where players placed money into a cap to equalise odds in a trade or wager. It later spread to horse racing, where it described artificial weight added to faster horses to level the playing field.

 

The Shift: By the late 19th and early 20th centuries, it was applied to individuals with physical impairments. While meant to signify "equalising the playing field," it carried a patronising undertone of placing an artificial limitation on a person. Modern advocacy explicitly separates disability (the internal state) from handicap (the environmental barrier).

 

3. "Retarded" / "Mental Retardation" (195

 

A New Direction in Psychological Science

In the early 20th century, psychology faced a growing crisis. Heavy reliance on introspection had led to deep disagreements, as private thoughts and feelings could not be directly observed or verified by others.

This lack of objective evidence made it difficult for psychology to establish itself as a reliable science, and many researchers began to question whether consciousness should remain its central focus.