Similarly the handbook of mental deficiency edited by norman ellis and published in 1963 gave theoretical direction to many studies in the years following its appearancethe present book and the symposium on which it is based are an attempt to continue this tradition by presenting theory based programmatic research in mental retardation . The experimental psychology of mental retardation and millions of other books are available for amazon kindle learn more enter your mobile number or email address below and well send you a link to download the free kindle app then you can start reading kindle books on your smartphone tablet or computer no kindle device required . Get this from a library the experimental psychology of mental retardation donald k routh the renaissance in the field of mental retardation since world war ii has been expressed both in research and in renewed practical concern for the plight of the retarded the 1958 monograph by . The renaissance in the fi eld of mental retardation since world war ii has been expressed both in research and in renewed practical concern for the plight of the retarded the 1958 monograph by masland sarason and gladwin entitled mental subnormality biological psychological and cultural . By preventing metabolic disorders toxins and alcohols from pregnant mothers and other births environmental hazards mental retardation can be prevented to a great extent through education and propaganda early treatment for phenyl ketonuria hydrocephalis and cretinism may probably reduce the percentage of onset of mental retardation
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