xiangyu cong posted on Wednesday, December 05, 2012 - 6:55 am
Dear Dr. Muthen:
I am doing EFA with 31 categorical indictors.
After first run , I think 8 factors is good fit. Among 8 factors extracted, only one factor has three negative loading with absolute value greater than 0.4. After I removed 7 indicators that did not have any significant loadings on any of the 8 factors, suddenly, there are three factors have negative loadings. It is very hard to interpret the results.
If the signs of all loadings switch from positive to negative, this is not a problem.
xiangyu cong posted on Wednesday, December 05, 2012 - 11:56 am
Thanks so much for your reply.
Through EFA, I now have 8 factors and 24 indicators. The factors we identified through EFA are obviously correlated.
Next, I will run CFA with my model based on my EFA results. But, two of eight factors only has two indicators with loading higher than 0.3. Should I include additional indicators for these two factors (maybe lower the cutoff from 0.3 to 0.2) to make them each has at least three indicators each?
I guess short version of my question is: "Is it OK that two out of eight factors in my model only has two indicators each in CFA?"