Answers are grounded in this paper and cite their sources.
Synopsis Two scales are described which have been found useful in the measurement of relevant behaviour characteristics of mentally handicapped people in large scale surveys. One scale rates according to levels of continence, ambulance, and the presence of specified disruptive behaviours, while the other reflects speech, self-help, and literacy abilities. This information has been found useful in the planning and implementation of services for the mentally handicapped.
No takes yet. Share an insight, caveat, or question.
Kushlick et al. (1973) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: