My question is in two parts:
1. Some authors have suggested that there is a sizable overlap between the domains of OI and OC. Is there evidence that suggests that the content of OI is a subset of that of OC?
2. I have measured OI and OC using separate scales; conducted EFA with one half of the sample, and confirmed the factor structure using the other half and CFA. Each construct with its factors demonstrates convergent and discriminant validity. Is there any way I can statistically test if the two constructs are distinct? May I also add that I have found the OC factors to significantly predict the OI factors (to varying degrees). This means that the two constructs are related.