Abe Khademi posted on Saturday, March 14, 2015 - 5:58 pm
I'm running a q-technique EFA where the Person x Item matrix is transposed to an Item x Person matrix. The responses are binary (0/1). The problem is that if a person responds all 1's or all 0's to an item, the item gets zero variance and EFA analysis terminates with an error that a variable is not categorical because it is all 1 or all 0.
Can we tell Mplus that all variables have two categories and regard the variable with all 1's or all 0's as binary too? In CFA we use $ to show the number of thresholds. How about EFA? What should we do with a variable with no variance?