Stefan MolyneuxVerified account

wrong, that victorian era statistic is based on university graduates taking a 1 dollar intelligence test, the flynn effect also disproves this

The Flynn effect is not real. Reflects increased familiarity with testing, not increase in factor being tested (g). To suppose otherwise you have to conclude the average Euro was borderline mentally disabled in 1900 - obviously preposterous

Literacy rates in England in 1850 were around 70% for men and 55% for women. Currently it's around 99% for both. I would think this would have a negative impact on the "general intelligence" of the average Englishman.

The man is Tweeting almost verbatim passages from a book as if these they're his own conclusions.

How was that calculated? Sounds very dubious

Hmm yeah I'd consider that pretty weak. Interesting idea but I think any changes are a lot smaller than a full SD in 150 years. I could be wrong of course but just comparing societies separated by that amount, I don't see that degree of difference.

We are talking about G not IQ. We are aware of dysgenic fertility patterns that should depress G but there haven't been empirical findings of this until recently. That's why this study and other like it investigating G-loaded tasks like RT, tonal and color discrimination etc