Abstract
In African infants precocious in both mental and motor test performance during the first year of life, environmental factors contributed at least 25% to test score variance. Even in the first year, therefore, social factors must be considered in evaluation of psychological development of these infants.
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HERBERT LEIDERMAN, P., BABU, B., KAGIA, J. et al. African Infant Precocity and Some Social Influences during the First Year. Nature 242, 247–249 (1973). https://doi.org/10.1038/242247a0
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DOI: https://doi.org/10.1038/242247a0
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