Group mean difference comparisons expressed as standard deviations (e.g. Cohen’s d, Hedges’ g) is the typical way to express effect sizes, and is widely used in meta-analyses.

You may refer to the use of standard errors in statistical testing, which is used to determine whether a found group difference is likely to be real or not. The problem with the standard error is that it is dependent on the sample size, and therefore non-informative outside that specific context. Whatever his other faults, your description of the passage does not support calling Gould a liar.

And then there is Lewontin’s Fallacy. Another Marxist subverting science.

Witness the differences between the European Ashkenazic Jews and the Sephardim, who did not experience the pressure-cooker that was the Jewish ghetto of the European Middle Ages. How different are they, and to what degree are they adapted to different environments? Is it racism to acknowledge the intellectual achievements of the Ashkenazi, while noting that the Sephardim have far less of whatever it is that creates that potential?

As well, how sure are we that these things are related to genes, and how much are environmental?

Whatever it is in humans that’s expressed as personality and that quality we have come to term “intelligence”, there’s a huge question as to where it comes from–If it were strictly learned, cultural, then many of the twin studies done over the years wouldn’t produce such disquieting results. If it were strictly genetic, then we wouldn’t have these cases where genius and intelligence pop out of nowhere in the population, either.

So, in the end, my belief is that the solution is to observe and learn more. The nature of what makes us human isn’t at all clear, nor is that chimerical quality that everyone terms “intelligence”. Which, I have to tell you, I’ve come to view with a very, very jaundiced eye, given that so many of those acclaimed to possess that quality are actually ‘effing idjits when I’ve observed them and the product of their efforts out in the real world.

By Far the biggest, most expensive, most intrusive, most dishonest and incompetent Lysenkoism is surely the ‘Climate change scam – the world has never seen anything to approach it…

However, the dishonesty about IQ since the mid 1960s is also extremely important, because it is necessary to rationalise the vast structure of Leftist politics in The West.

So maybe it is even more important than Climate Change, because more fundamental – in a sense the systematic denial of group differences in intelligence (personality traits etc) underpins the political system which implemented the global warming scam.

To put it another way, both are major strategies of the evil global establishment and their demonic overlords…