Proper punctuation
Please consider the following sentence.
A has a unique association with B beyond its shared variance with C and D.
My question is whether and is joining B and D, or it is joining C and D. I mean to ask if A has a unique association with B and D, or A has shared variance with C and D.
Solution 1:
It comes down to the usage of its in your example sentence. The syntax suggests that its is referring to A. This means that A is sharing the variance with both C and D.