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Dupuy, Harold J.; Gruvaeus, Gunnar – 1977
Although the Intellectual Development (ID) index was constructed using standard psychometric procedures, the derivation of the other two indexes, Socio Intellectual Status (SIS) and Differential Intellectual Development (DID), by criterion scaling should have applications in diverse areas of scale or index construction. The ID is basically…
Descriptors: Elementary Secondary Education, Family Characteristics, Family Health, Family Income