For some years now I have made occasional mention of a survey conducted in May 2013 to March 2014 to find out what intelligence researchers thought about racial differences in intelligence. Now the paper has been published, so in academic terms the work actually exists, and can be quoted and commented upon. I can remember... Read More

It takes a certain courage to title a paper: Genetic “General Intelligence,� Objectively Determined and Measured. Javier de la Fuente, Gail Davies, Andrew D. Grotzinger, Elliot M. Tucker-Drob, Ian J. Deary doi: Objectively? Is such language permissible in contemporary science? Should we not instead be cautiously shuffling towards seven types of ambiguity, hedged in with... Read More

When I started work in September 1968 one of the first things I was taught was that intelligence testing had a long history, and that many of the subtests in the Wechsler assessments I had been taken from previous research. Kohs’ blocks (1920), I used to mutter, when people talked about Block Design. I was... Read More

Apologies to the reader. Perhaps I wax tedious. But the question of intelligence is both interesting to me and great fun as talking about it puts commenters in an uproar. It is like poking a wasp’s nest when you are eleven. I am a bad person. Clearing the underbrush: Obviously intelligence is largely genetic–if it... Read More