Hard to give general advice on that because it depends on so many things - including the number of factors and whether the items are binary, ordinal, or continuous. Generally speaking, with continuous items N=200 is often sufficient.
Daniel Kern posted on Thursday, September 13, 2018 - 6:13 pm
I am using an ESEM, to regress 4 continuous IV's on a 2-factor EFA. I was wondering if you could please provide any guidance or reference regarding an adequate sample size. Any assistance would be much appreciated. Thank you.