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A Longitudinal Study of the Effects of Nursery
Mental Growth in Young Children
Factors Influencing the Growth of Intelligence
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21 months ability Alpha-tested anthropometric Army Alpha average IQ Binet California Preschool change in IQ chil Child Development Child Welfare coefficients comparison Control Group critical ratio curves differences dren environment examination factors fathers feebleminded formboard foster homes gains Genet girls grade high school homogamy hypothesis increase individual intelligence quotients intervals Iowa Iowa City IQ changes IQ points IQ's Jour Kuhlmann-Binet mean IQ measures median mental development mental growth mental scores mental-test scores Merrill-Palmer Minnesota Miss Mooseheart mothers Non-Nursery non-nursery-school nursery-school attendance nursery-school experience nursery-school group nursery-school training occupational offspring pairs parents Penn percent period placement present study Professor Psychol range rates relation Research retest sample sibling correlation sigma scores significant Skeels socio-economic Speyer standard deviations Stanford Stanford-Binet test status Superintendent of Schools superior Table Teachers College theory trend University University of California University of Iowa University of Minnesota vocabulary Wellman Winnetka Yearbook York