Has Genetics Won the IQ Debate?

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"Does any serious scientist any longer doubt that heredity contributes importantly to individual differences in intelligence?" This was the question put by Professor Robert Plomin of the Institute of Psychiatry in London in a recent issue of the scientific journal Behavioural Genetics.

The Medical Research Council certainly takes his ideas very seriously; it has awarded Professor Plomin and others pounds 2.6m to identify the genes that underpin intelligence. Last week, at London Zoo, the Galton Institute organised a conference on the same topic called the "Biological and Social Aspects of Intelligence".

Historically, much of the research purporting to show …