Blog Profile / Evo and Proud

Filed Under:Academics / Anthropology
Posts on Regator:252
Posts / Week:0.7
Archived Since:October 4, 2008

Blog Post Archive

A pathway to pro-social behavior

The digit ratio is the length of the index finger (2 nd finger) divided by the ring finger (4 th finger). It correlates with the degree of androgenization or estrogenization of fetal tissues, including the fetal brain. (source) As small...Show More Summary

What happened in the 1980s to reaction time?

A steady increase in reaction time seems to begin circa 1980 in Sweden, Great Britain, and the United States (h/t to hbd chick) Has reaction time been steadily increasing from generation to generation? This was the finding of a paper last year, which argued that mean IQ had fallen in Britain by 13 points since Victorian times (Woodley et al., 2013). Show More Summary

Small effects at many genes, but are the effects non-additive?

Allele dominance (source). A single copy of a dominant allele is as effective as two copies of a recessive allele. The current thinking is that intellectual capacity has increased in humans through new alleles that cause small positive effects at a large number of gene loci. Show More Summary

The novelty effect: a factor in mate choice

Series of facial images from clean-shaven to full beard (Janif et al., 2014) For the past thirty years, the tendency has been to study sexual attractiveness from the observer's standpoint, i.e., we choose mates on the basis of what's good for us. Show More Summary

Compliance with moral norms: a partly heritable trait?

Election poster from the 1930s for Sweden’s Social Democratic Party (source). Is the welfare state more workable if the population is more predisposed to obey moral norms? Do we differ genetically in our ability, or willingness, to comply with moral norms? Please note: I'm talking about compliance. Show More Summary

The riddle of Microcephalin

World distribution of the recent Microcephalin allele. The prevalence is indicated in black and the letter 'D' refers to the 'derived' or recent allele (Evans et al., 2005) Almost a decade ago, there was much interest in a finding that...Show More Summary

A bird in a gilded cage

My second ebook has been published in the online journal Open Behavioral Genetics. PDF version Epub version The following is a copy of the Foreword: Luigi Luca Cavalli-Sforza is a complex figure. On the one hand, he has publicly backed those who assert that human races do not exist. Show More Summary

Kinder, gentler speech

A highwayman - by Glen Campbell (source). Before the rise of the State, and its pacification of social relations, the top man was the one who dominated the local group through a mixture of violence, bombast, and charisma. Before theShow More Summary

Did Europeans become white in historic times?

T?t?roaice – Petre Iorgulescu-Yor (source). Today, the steppes north of the Black Sea lie within the European world—politically, culturally, and demographically. Not so long ago, they were home to nomads of Central Asian origin. A new...Show More Summary

Population differences in intellectual capacity: a new polygenic analysis

PISA test documents at a German school (source: Theo Müller). PISA and IQ tests are informing us about differences in intellectual capacity by country. Meanwhile, genetic studies are informing us about genomic differences by country....Show More Summary

The paradox of the Visual Word Form Area

Luke the Evangelist (source: British Library). In the past, only a minority could read long texts of cursive writing. But many more could read short texts of block writing. The Visual Word Form Area (VWFA) is a specialized part of the brain that helps us recognize written words and letters. Show More Summary

Replacement or continuity?

Inuit meat cache, Kazan River (source: Library and Archives Canada / PA-101294). Because of their high meat diet, hunters produce more body heat than farmers do. Natural selection has thus favored certain mtDNA sequences over others in hunter-gatherers. Show More Summary

Burakumin, Paekchong, and Cagots

This is the first of a series of ebooks. You can access it here. Below is the foreword.-------------------------------------------------------------------------------------------------Foreword The Burakumin of Japan, the Paekchong of...Show More Summary

A little less brown and not necessarily blue-eyed

The skin color is about right. Not so sure about the eyes (source: Spanish National Research Council (CSIC)). There seems to have been a succession of changes to hair, eye, and skin color within a relatively restricted area of Europe. Show More Summary

SLC24A5: Reply to Greg Cochran

Ethiopian manuscript paintings (source: A. Davey). Ethiopians have a self-image that is lighter-skinned than their actual selves. If the prevalence of SLC24A5 is higher in Ethiopia than the degree of admixture from lighter-skinned peoples across the Red Sea, this discrepancy may be explained by social selection for lighter skin. Show More Summary

The new European phenotype: expansion into the Middle East

Natufian sites (15,000 – 12,000 BP). These semi-sedentary hunter-gatherers are widely seen as precursors to the early civilizations of the Middle East. Yet biological continuity between the two seems doubtful. Physically, they looked more like present-day sub-Saharan Africans. Show More Summary

The first industrial revolution

Eyed sewing needles from Ice Age Europe (17,000 to 10,000 BP). (source: Didier Descouens ) As early modern humans spread farther north, they entered more challenging environments. This was particularly so when they left the boreal forests and entered the open steppe-tundra that covered much of northern Eurasia. Show More Summary

The brown man with blue eyes

Venus of Willendorf (30,000 – 27,000 BP). Is that a special headdress … or peppercorn hair? (source: Matthias Kabel) Europeans already had blue eyes while still hunter-gatherers. This is what we’ve learned after retrieving ancient DNA...Show More Summary

Looking ahead to 2014

When did early Europeans acquire their palette of eye colors? And their palette of hair colors? That question may soon be answered with retrieval of ancient DNA. (source: Dipoar) As the new year begins, I’m particularly interested in the following topics. Show More Summary

Looking back over 2013

Cameron Russell. She looks nice in a long skirt. Source: Ted Talks The year is ending, and it’s time to take stock. Which posts interested you the most? Here are the five most popular ones, with the number of visits to each post: White...Show More Summary

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