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 […]

I don’t have time to do this project right now. However, since I gathered a bunch of relevant resources that I don’t want to have to re-find, I will write them down somewhere — here. My blog is my extended memory. Music genres are another fuzzy concept, like races. Lots of genres (and classification systems […]

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 […]

This post covers some stuff already covered by others, but more briefly. Two studies of interest: Riemann, R., Angleitner, A., & Strelau, J. (1997). Genetic and Environmental Influences on Personality: A Study of Twins Reared Together Using the Self- and Peer Report NEO-FFI Scales. Journal of Personality, 65(3), 449–475. doi.org/10.1111/j.1467-6494.1997.tb00324.x Connelly, B. S., & Ones, […]

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. doi.org/10.1111/ecoj.12453 This paper shows that across multiple generations, the persistence of occupational and educational attainment in Germany is larger than estimates from two generations […]

I was skimming a Wikipedia article related to immigrant crime and came across an obscure Swedish language report from the 1990s: Ahlberg, J. (1996). Invandrares och invandrares barns brottslighet: En statistisk analys [Immigrants’ and immigrants’ children’s crime: a statistical analysis]. Brottsförebyggande rådet (BRÅ). (file available on OSF) This report is a goldmine. Briefly: Data from […]

Kirkegaard, E. O. W., & Becker, D. (2017). Immigrant crime in Germany 2012-2015. Open Quantitative Sociology & Political Science. Retrieved from openpsych.net/paper/50 So the German paper is finally out. As far as I know, this is the most extensive analysis of immigrant crime in Germany. Still, it is a quite simple analysis in some ways. […]

(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: doi.org/10.1101/106062 This study investigates the creation of polygenic scores (PGS)s for […]

McCormick, G. L., Robbins, T. R., Cavigelli, S. A., & Langkilde, T. (2017). Ancestry trumps experience: Transgenerational but not early life stress affects the adult physiological stress response. Hormones and Behavior, 87, 115–121. doi.org/10.1016/j.yhbeh.2016.11.010 www.psypost.org/2017/02/stress-experienced-individuals-ancestors-may-overshadow-stress-experienced-within-lifetime-47316 Exposure to stressors can affect an organism’s physiology and behavior as well as that of its descendants (e.g. through maternal […]