Doing some background reading on genomics topics such as: Cross-population predictive validity of genomic scores (polygenic scores). LD-decay. Causal variant tagging / distribution of causal variants / genetic architecture. Admixture mapping accuracy given LD decay. Implications of the above for research into genetic causes of group differences in polygenic traits. Implications of the above for […]

In many ways, my science — and my colleagues’ science — generally involves collecting evidence for obvious hypotheses that are mainly denied by leftist-leaning people (more precisely, egalitarian). Here’s a brief review. Stereotypes about major demographic groups are quite accurate Jussim of course already showed this, but since it’s still frequently denied, seems that we […]

In evolutionary biology, there is a hypothesis about sex ratios: Trivers-Williard hypothesis. It has been noted that males have higher dispersion in their fertility than females have, a finding that is also true in humans (one, two, three). If resources are related to fertility — which they are in many species and used to be […]

Disclaimer: I did not read Rushton’s seminal book on the topic. I was only first recently able to obtain a complete electronic copy (i.e. not abridged version). I did in fact only skim this literature. I don’t have time to work on this, but I’d like others to do so, hence I put the labor […]

I read the following interesting paper: Braun, S. T., & Stuhler, J. (2016). The Transmission of Inequality Across Multiple Generations: Testing Recent Theories with Evidence from Germany. The Economic Journal, n/a-n/a. This paper shows that across multiple generations, the persistence of occupational and educational attainment in Germany is larger than estimates from two generations […]

(See 2015 post) There’s a very interesting new preprint out: Heterogeneity in polygenic scores for common human traits Erin B Ware, Lauren L Schmitz, Jessica D Faul, Arianna Gard, Colter Mitchell, Jennifer A Smith, Wei Zhao, David Weir, Sharon LR Kardia bioRxiv 106062; doi: This study investigates the creation of polygenic scores (PGS)s for […]

Gwern has discussed this before, but here’s another take inspired by this Twitter exchange: Within MZ association has a large effect on the probability of causal path. What % of within MZ associations are causal? @JayMan471 — Emil OW Kirkegaard (@KirkegaardEmil) February 2, 2017 I envision the following way of finding out: Gather a large […]

Lots of published psychology studies don’t replicate well, in particular cute things like interactions, counter-intuitive or priming effects. In general, traditional behavioral genetics studies have replicated well. This is not surprising because basically the same method (ACE fitting) has been applied to lots of large datasets, and studies that use consistent methods on large datasets […]

Back in January, Steve Hsu did an interview with Daphne Martschenko who is a phd candidate at Cambridge in education. She’s basically doing science journalism on behavioral genetics as far as I can tell. Now there’s a new interview up. I have some comments to it because Steve was a little too nice. Bias from […]

We need dplyr for this: library(dplyr) First, use the anon user to log into the SQL server (user = “anon”, pass = “”, ip = “”, port = 3306): sql = src_mysql(“population_freqs”, host = “”, user = “anon”, port = 3306) Select the 1000 genomes phase 3 table: sql_1kg = tbl(sql, “1000genomes_phase3”) #look at the […]