Revisiting Moore’s transracial adoption study

Transracial adoption studies are a powerful methodology for examining the relative contribution of genetics and environment to average differences in IQ across racial and ethnic groups. The best — and most famous — transracial adoption study was the Minnesota Transracial Adoption Study (MTAS) conducted by Sandra Scarr and her colleagues (Scarr & Weinberg, 1976; Weinberg…

Forty years squandered by IQ environmentalists

Update: This post has been translated into French. Cet article a été traduit en français. The latest book that I have finished reading is James Flynn’s (1980) Race, IQ and Jensen. This is the earliest work by Flynn that I have ever read, and I can see in it seeds of his later thought. The…

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