Dimensions of the dating mind
A decade ago I got into my first media circus by scraping the OKCupid dating site. The site uses (or used) a novel approach of having users answer 100s of…
g-loadings of tests on taketest.xyz
Many people were asking me about the g-loadings of the tests on the site. The answer is somewhat complicated because: We don't have many people who took all the tests.…
The making of the 8 dimensional US political test
Some days ago I posted a new US political ideology test on X. It went decently viral and currently has collected about 28k first time completions. You can find the…
Error in the previous version of FA_residuals()
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…
Finding mixed cases in exploratory factor analysis
Abstract Two methods are presented that allow for identification of mixed cases in the extraction of general factors. Simulated data is used to illustrate them. Introduction General factors can be…
Measuring scientific knowledge: can we use questions that are denied by the religious?
In reply to http://www.ljzigerell.com/?p=534 and his working paper here: http://www.ljzigerell.com/?p=2376 We are discussing his working paper over email, and I had some reservations about his factor analysis. I decided to…