Thanks for your interest in helping me. Below is what you requested. If you dont want to read all this stuff, you could help me simply by explaining in general the difference between separate and joint factor models and possible, plausible interpretation of what a fit of the latter model means when dealing with two assessments that on their face measure similar constructs.

Thanks!

barry

Here is the link:

https://pdfs.semanticscholar.org/7a75/9dda0eb0e9af5c3cf1a9a14f96d70a44922f.pdf
This describes the 2 models: [p.3]

The Present Study

Two hypothesized models tested the hypothesis that openness

facets and their corresponding OEs represent the same

latent constructs. In the separate-factor model, indicators of

OEs and indicators of openness facets were modeled as two

separate constructs expected to show a very strong correlation.

Openness facets and their corresponding OEs are as follows:

O1 Fantasy and imaginational OE, O2 Aesthetics and

sensual OE, O3 Feelings and emotional OE, O4 Actions and

psychomotor OE, O5 Ideas and intellectual OE, and O6

Values on its own. The joint-factor model made this hypothesized

relationship more explicit by having all openness and

OE items belonging to each combination load into one single

latent variable.

Key result:

Model 2, in which openness facets and their corresponding

OEs were specified as joint factors, fit the data well

with the exception of CFI, and results were interpretable.

One Interpretation of this result:

Based on the results, openness to experience and OEs seem

to represent largely the same construct.

Another interpretation:

the joint-factor model had acceptable fit and interpretable loadings; thus,

openness seems to encompass OEs.