Horn J M, Loehlin J C, Willerman L
Behav Genet. 1979 May;9(3):177-201. doi: 10.1007/BF01071300.
Intellectual and personality measures were available from unwed mothers who gave their children up for adoption at birth. The same or similar measures have been obtained from 300 sets of adoptive parents and all of their adopted and natural children in the Texas Adoption Project. The sample characteristics are discussed in detail, and the basic findings for IQ are presented. Initial analyses of the data on IQ suggest moderate heritabilities. Emphasis is placed on the preliminary nature of these findings.
智力和个性测量数据来自那些在孩子出生时就将其送去领养的未婚母亲。在德克萨斯领养项目中，从300对养父母以及他们所有领养和亲生的孩子那里也获得了相同或类似的测量数据。文中详细讨论了样本特征，并呈现了智商方面的基本研究结果。对智商数据的初步分析表明遗传度适中。重点强调了这些研究结果的初步性质。
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