@article{ref1,
title="How can we boost IQs of "dull children"?: A late adoption study",
journal="Proceedings of the National Academy of Sciences of the United States of America",
year="1999",
author="Duyme, M. and Dumaret, A. C. and Tomkiewicz, S.",
volume="96",
number="15",
pages="8790-8794",
abstract="From 5,003 files of adopted children, 65 deprived children, defined as abused and/or neglected during infancy, were strictly selected with particular reference to two criteria: (i) They were adopted between 4 and 6 years of age, and (ii) they had an IQ <86 (mean = 77, SD = 6.3) before adoption. The average IQs of adopted children in lower and higher socioeconomic status (SES) families were 85 (SD = 17) and 98 (SD = 14.6), respectively, at adolescence (mean age = 13.5 years). The results show (i) a significant gain in IQ dependent on the SES of the adoptive families (mean = 7.7 and mean = 19.5 IQ points in low and high SES, respectively), (ii) IQs after adoption are significantly correlated with IQs before adoption, and (iii) during adolescence, verbal IQs are significantly lower than performance IQs.<p /><p>Language: en</p>",
language="en",
issn="0027-8424",
doi="",
url="http://dx.doi.org/"
}