I don't have time to provide extensive citations for this post, so some things are cited from memory. You should be able to locate the relevant literature, but otherwise just…
This is commentary on: Ellis, L., Hoskin, A. W., Dutton, E., & Nyborg, H. The Future of Secularism: a Biologically Informed Theory Supplemented with Cross-Cultural Evidence. Evolutionary Psychological Science, 1-19.…
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…
There seem to be ways to post knitr documents to Wordpress blogs, but until that's set up, I will be publishing them over at RPubs and posting a link here.…
In the spirit of reproducible science, this is a post about an error I fixed in a function that affects all prior analyses with that. When factor analyzing data, the…
I'm reading Missing Data: A Gentle Introduction and it mentions various methods to understand how data are missing in a given dataset. The book, however, is light on actual tools.…
Suppose you have some dataset where you know or suspect that the real generating function is actually a piecewise function with k pieces each of which is a standard linear…
Someone asks on Reddit: Can someone intuitively explain the correlation formula? I know what the Cov(X,Y) means. It tells you if the relationship between the variables X and Y is…
When one has a continuous variable and then cuts it into bins (discretization) and correlates it with some other variable, the observed correlation is biased downwards to some extent. The…