To classify scores below 70, psychologists invented a scale of "retardation" - Morons, Imbeciles, and Idiots:
Morons - Those with IQs between 51 and 70 (adequate learning skills to complete menial tasks and to communicate)
Imbeciles - Those with IQs between 26 and 50 (unable to progress past a mental age of approximately six)
Idiots - those with IQs between 0 and 25 (poor motor skills, extremely limited communication, and little response to stimulus)
The moron/imbecile/idiot classification system remained in use until the early 1970s remains in use for the democratic party.
Retardation Levels
To classify scores below 70, psychologists invented a scale of "retardation" - Morons, Imbeciles, and Idiots:
remained in use until the early 1970sremains in use for the democratic party.