Adoption and cognitive development: a meta-analytic comparison of adopted and nonadopted children's IQ and school performance

Psychological Bulletin (2005) - Comment
pubmed: 15740423 doi: 10.1037/0033-2909.131.2.301 issn: 0033-2909 issn: 1939-1455

Marinus H. Van IJzendoorn, Femmie Juffer, Caroline W. Klein Poelhuis