Reddit reviews Intelligence: A Very Short Introduction

I was going to post something relating to this but seeing as you've raised it. There are race differences at a global level for IQ. You can find that in pretty much any psych undergrad text book. What I was going to post, and it seems you've picked up on it; was that the bell curve is highly criticised in the academic world for not accounting for enough additional factors. I have the book and have studied intelligence before but never finished the book as I find the topic fairly boring to be honest.

However, still on that topic: http://www.amazon.co.uk/Intelligence-Very-Short-Introduction-Introductions/dp/0192893211/ this is surprisingly good, up to date and short.

For something a little different, I actually can't think of a single sciencey psych book I've read in recent years I haven't had significant problems with. That's the problem when your familiar with the field. Ramachandran writes well, as does Pinker (Pinker is a linguist rather than a psychologist and his language is beautiful to read_. However, I went into psych with Pinker as my idol but his last book killed him for me. Don't recommend reading that one. I haven't read any of Robert Sapolskys books but his presentations and lectures are outstanding so I would imagine his written work would be of a similar calibre.

A brief but fantastic (i.e., based on empirical evidence and well written) introduction to the field of human intelligence and psychometrics is a little handbook by Ian Deary called Intelligence: A Very Short Introduction. This would be a good place to start if you are looking to see what what the major questions, findings, and challenges have been in this field over the last century.

Not sure what you are saying - but the evidence overwhelmingly suggests differences between groups. You can see this in groups of biracial babies quite clearly, they regress to the mean of the parents. For example, a half Asian (avg IQ 110) and half Caucasian (100) baby will on average have an IQ of 105. Strong evidence for both the genetic determination of IQ, as well as racial differences in IQ. It also shows that these differences will decline as humans continue to intermingle, which is good news (IMO).

This book by preeminent human intelligence scientist Ian Deary has a great summary of the research

This is a good place to start even if it is rather dated by now:

http://www.amazon.com/Intelligence-A-Very-Short-Introduction/dp/0192893211

We know more about genes today due to both the falling cost of DNA sequencing and to better and lower-cost DNA chips. This has been exploited by testing thousands of non-related people (both IQ and SNP's) and there is indeed a relation, such that the more similar the DNA, the more similar the IQ and vice versa.

This is one of the articles about it:

http://www.nature.com/mp/journal/vaop/ncurrent/full/mp2014105a.html

I have another one that I think is by Plomin et al that is behind a paywall somewhere on a backup harddisk. I'll try to remember to PM you when I find it.

Det har jeg. Du kan læse .pdf-filen her: http://tinyurl.com/o82b2ay
eller købe bogen i papirform her: http://www.amazon.com/Intelligence-A-Very-Short-Introduction/dp/0192893211

Der er meget andet godt materiale på emnet. Nogle af forklaringerne kræver tung matematik. Det var også dét (matematik, i dette tilfælde faktor analyse) som Charles Spearman brugte til at se én fælles mental evne, kaldet g-faktor (ofte bare kaldet intelligens).
Wikipedia er din ven, hvis du vil vide lidt mere.