If you look at Penis size vs IQ, Penis size is ranked - Afro, Euro, Asian. IQ is ranked the other way round, showing a negative correlation between penis size & IQ.
That claim is very suspect on both grounds.
1. The "definitive penis size survey" has found that whilst Afro origin men tend to have larger flaccid penises than their Caucasian counterparts, the results for erect measurements actually favour Caucasians by a small amount (6.3" vs 6.1"). I don't know whether that study has been subject to any criticism and certainly, other studies and anecdotal evidence suggests the opposite is true, but I merely put that out there for consideration.
2. The studies of relative IQ have been so discredited that they probably shouldn't be relied upon in argument. The criticisms include the political affiliations of those funding, conducting and interpreting the data gathered from such studies, the impact of poverty and deprivation on "thinking skills" education (both at school and within the home), and cultural biases inherent in the methodology of the testing regime.
On that last issue....Interestingly, some studies have shown that children from poor backgrounds tend to do much better than their wealthy counterparts if the tests are re-drafted to test different types of thinking skills, especially ones which favour practical problem solving. These results may seem counterintuitive, because surely the wealthier, and therefore, by and large, better educated children should win hands down. The suggestion put forward is that these latter, more practical tests, favour the poor kids because they often lead more independent, less molly coddled lives and have grown up in an environment where problems need to be thought through in a creative and radical fashion rather than just being solved by throwing money at the issue. But, my point is this - it all depends on what questions are being asked and how they are phrased.
Speaking from my own experience, when I was a student, I took part in a study conducted by my university's psychology dept. My IQ was measured at 145, averaged over 3 tests. I work in a profession where high intelligence is pretty much a sine qua non. However, in that profession I frequently meet people, both black and white that have neither my eloquence or my education, but in their environment, and on their terms, they could almost certainly run rings round me.
I know we guys tend to look for nice, neat, simple answers which can be backed up by pointing to a graph, but human beings and the societies that they form are not always susceptible to such simplistic reduction (far too many unknown and unknowable variables).
My twopenn'orth.....
