Van Ijzendoorn, M. H., Juffer, F., & Poelhuis, C. W. K. (2005). Adoption and cognitive development: a meta-analytic comparison of adopted and nonadopted children's IQ and school performance. Psychological bulletin,…
Often I want to get the mean value for a case across a number of columns, usually years. This however gets repetitive because the base mean() function cannot handle data…
I found this one a long time ago and tweeted it, but apparently forgot to blog it. Odenstad, A., Hjern, A., Lindblad, F., Rasmussen, F., Vinnerljung, B., & Dalen, M.…
One idea for a series of blog posts is that I could about new functions in my R package. Often I just push these without letting anyone know, but I…
It seems that no one has integrated this literature yet. I will take a quick stab at it here. It could be expanded into a proper paper later in case…
See also: Rationality and bias test results I stumbled upon another political bias test: http://econturingtest.com/ Basically, you will be given 10 questions: 5 about why US-style conservatives favor/oppose a given…
https://staffanspersonalityblog.wordpress.com/2013/11/05/openness-to-experience-that-liberal-je-ne-sais-quoi/ Tattoos and piercing. I haven’t found any evidence that this relates to intelligence or even creativity. On the other hand, what underlying factor of openness would it be an…
https://twitter.com/KirkegaardEmil/status/662840970166280192 See first: Some methods for measuring and correcting for spatial autocorrelation Piffer's method Piffer's method to examine the between group heritability of cognitive ability and height uses polygenic scores…
https://www.goodreads.com/book/show/19823567-quantitative-research-in-linguistics http://gen.lib.rus.ec/book/index.php?md5=3bb68f8bfea90338ad2efa04569108e2 There are few good things to say about this book. The best thing is on the very first page: Some things never change: the sun rises in the…