Renaming functions in R packages using roxygen2
Naming things in programming is hard. I can see 2 reasons for this. 1) It is hard to pick a name you won't want to change later. With large projects,…
Ending cognitive aging
Consider the findings from the large UK study I recently blogged (Akarlin blogs it too): Some of these have steep declines. It's not just an artifact of the FLynn effect,…
Cross-validating the Human Accomplishment dataset with Wikipedia
(Partial Rnotebook) Last year I convinced Charles Murray to share some of his data underlying his great book Human Accomplishment. He put it on OSF, where it remains available. So…
A sex difference that won’t go away and measurement invariance
Whitley, E., Deary, I. J., Ritchie, S. J., Batty, G. D., Kumari, M., & Benzeval, M. (2016). Variations in cognitive abilities across the life course: Cross-sectional evidence from Understanding Society:…
Immigrant performance in the Netherlands: brief look
I have only been able to find one fairly detailed dataset of immigrant performance in the Netherlands (covered in this study). It found the usual things, but with much uncertainty…
PSA: bugfix for the scoreIrt function in psych package, you should re-do your analyses!
I was working on a study and while doing so, I updated all my R packages. To my surprise, this changed the results in my analysis to a degree that…
Cross-national data for social desirability bias in polling
This is just a brief post summarizing some stuff because I don't have time to do more right now. Noah Carl asks me: Can you point me to some evidence…