Idiot as a word derived from the Greek, idiōtēs ("person lacking professional skill”), An idiot, dolt, or dullard is a mentally deficient person, or someone who acts in a self-defeating or significantly counterproductive way.

 In 19th and early 20th century medicine and psychology, an "idiot" was a person with a very severe mental retardation. In the early 1900s, Dr. Henry H. Goddard proposed a classification system for mental retardation based on the Binet-Simon concept of mental age.

The term "idiot" was used to refer to people having an IQ below 30.

In current medical classification, these people are now said to have "profound mental retardation."

IDIOT

"Moron" was coined in 1910 by psychologist Henry H. Goddard[3] from the Ancient Greek word (moros), which meant "dull"

1. The I.Q of an idiot is higher than the I.Q of a moron. True/False? TRUE 2. The I.Q of an idiot is above 50. True/False? FALSE

3. Which mental retardation is the worst? A- Imbecile B- Moron C- Fool D- Idiot

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