Some quick thoughts on Sam Gyimah's resignation after conversations with various Conservative MPs: 1) the chances of a second referendum are a lot higher than I thought:

2) At this point, if you are a young and ambitious Tory MP it is now so overwhelmingly in your interest to vote against the withdrawal agreement. V v hard to see how Julian Smith can cap rebellion at under 100:
3) Really just to reiterate 1) Gyimah is the kind of "No, never gonna rebel" vaguely pro-EU Tory you'd need to get on side to outweigh Labour Leavers and Real Concerners.


THREAD: 12 Things Everyone Should Know About IQ

1. IQ is one of the most heritable psychological traits – that is, individual differences in IQ are strongly associated with individual differences in genes (at least in fairly typical modern environments).

2. The heritability of IQ *increases* from childhood to adulthood. Meanwhile, the effect of the shared environment largely fades away. In other words, when it comes to IQ, nature becomes more important as we get older, nurture less.

3. IQ scores have been increasing for the last century or so, a phenomenon known as the Flynn effect. (N ≈ 4 million)

(Note that the Flynn effect shows that IQ isn't 100% genetic; it doesn't show that it's 100% environmental.)

4. IQ predicts many important real world outcomes.

For example, though far from perfect, IQ is the single-best predictor of job performance we have – much better than Emotional Intelligence, the Big Five, Grit, etc.

5. Higher IQ is associated with a lower risk of death from most causes, including cardiovascular disease, respiratory disease, most forms of cancer, homicide, suicide, and accident. (N = 728,160)

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