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 goal is to reveal a latent structure in the dataset. Given various assumptions, factor analysis will find a structure if there is one. It is […]

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 extracted from datasets where all or nearly so the variables are correlated. At the case-level, such general factors are decreased in size if there are […]

In reply to www.ljzigerell.com/?p=534 and his working paper here: 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 run the analyses I wanted myself, but it turned into a longer project which should be placed in a short paper instead of in a […]