I have a 3-factor CFA model with 16 items. I conducted 8 groups comparison.For one group, Amos analytic result showed " The following covariance matrix is not positive definite." The sample size for this group is n=31 (1) Might the "not positive definite problem" happen because the sample size is too small, n= 31?(2) How to fix the about question in order to accomplish 8 groups comparison? Thank  you very much and I look forward to hearing from you.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.