Is anyone aware of anyway one can change/respecify the null models for obtaining incremenrtal fix index measures in OpenMx.
My current plan to accomplish this is to fit alternate baseline models separately and to use the chi-square values from the modified baseline models to calculate the incremental fit index values.
I have ran into an issue of not being able to fit the base line model without paths in trying to carry out my plan. if it is not possible to respecify the baseline null/baseline model, can someone/anyone suggest a way to fit models without regression paths in OpenMx.
I am obviously not very savvy with programming based on the description I have provided, so please feel free to ask for clarification if you'd like to help with my question.