Continuing the series on selected papers from the 2015 London Conference on Intelligence I am testing the power of an arresting image, as used by Ed Dutton in his presentation: Population Differences in Androgen levels: A test of the Differential K theory.
I should point out that the fine figure of a man above was neither a speaker nor a guest at the conference, but hair is an indicator of hormones, so examine the hairiness of the back of your middle finger before reading any more.
All species face a dilemma: is it better to have very many offspring, and hope that some will survive; or have a few and work hard to ensure that they survive? The first strategy involves lots of sex and not much parental involvement; the second less sex and much more parental investment. The Reproductive strategy leads to fast, “live for the moment” lives, the Konservative strategy slower, “live for tomorrow” lives.
Dutton argues that most of the data fits well with the r-k continuum, but points out anomalies regarding body hair, which against prediction is higher in European groups, possibly as an adaptation to mildly colder climates.
Read it all here: