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| Les Carnets de l'enfance | 1 |
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| Migliorino, Giuseppe | 1 |
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Migliorino, Giuseppe – Les Carnets de l'enfance, 1974
Intelligence tests were administered to a stratified sample of 4058 school children from Palermo, Sicily. I.Q. scores were found to be positively correlated with socioeconomic status and negatively related to family size. As birth order increased, mental development decreased. Implications for future research were discussed. (EH)
Descriptors: Birth Order, Family Characteristics, Genetics, Heredity
