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    Mental Retardation

    Mental Retardation , Mental Impairment Mental Deficiency Mental Subnormal , , , Idiot, Dumb . , .


    : Mentel Retardation Definitions of

    , , .

    Medical Definition

    , . 1900 .

    Nervous System .Central .

    ( Benoit , 1952 ) .


    Psychometric Definitions

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    1905 , Intelligence Questiont ( I .Q ) . [ 75 ] [ 2,14% ] .

    ( Wallin , 1949 ) , .

    Social Definitions

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    , Social Demand , (Doll,1941) , , , , , , , .

    (Doll,1941) ,

    . , . .


    Educational Definitions

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    (Ingram,1953) " " . [ 18% 20% ] [ 50 - 89 ] . [ 75 - 89 ] Borderline ( ) [ 16% 18% ] [ 50 , 75 ] [ 2% ] .

    Kirk " 1962 " .


    Definition of the American Association of Mental Retardation ( AAMR)

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    ( AAMR) Heber " 1961 " " 1963 " [ 16 ] : , , . [ 70 84 ] .

    Grossman 1973 , : , , [ 18 ] .

    1961 , 1973 1983 :
    1. ( ) [85 ] [ 84 ] , , [ 70 ] [ 69 ] .
    2. [ 15,86% ] [ 2,27% ] .
    3. [ 16 ] [ 18 ] .
    4. " " , " " .

    1973 , 1973 , 1992 , " , , , , , , , , , , , .

    (AAMR) 2002 , , , , 18 .

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