 | 1969 - 1128 pages
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 | 1964 - 884 pages
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 | 1961 - 866 pages
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 | 1967 - 1222 pages
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 | 1990 - 818 pages
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 | 1961 - 116 pages
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 | Wisconsin. Department of Public Instruction - 1961 - 156 pages
...comprised of national experts in the field, mental retardation may be defined as: "Sub-average general intellectual functioning which originates during the...associated with impairment in adaptive behavior." Adaptive behavior may be further defined as impairment in one or more of the following: (1) maturation,... | |
 | Virginia - 1976 - 366 pages
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 | 1966 - 890 pages
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Mental retardation refers to subaverage general intellectual functioning which originates during the developmental period and is associated with impairment in adaptive behavior. 
