Two different questions
Identity asks how strong modeled belonging and shared attachment are. Identity Fracture asks how divided the political and social field is. One is not simply the inverse of the other.
Four useful profiles
High Identity with low fracture suggests cohesive identity. High Identity with high fracture suggests contested identity. Low Identity with low fracture suggests weak but relatively calm attachment. Low Identity with high fracture indicates fragmentation.
Why this matters
Keeping the dimensions separate prevents a single score from flattening very different social structures into the same number.
Research standard: framework notes explain measurement logic. They are not presented as empirical findings unless a cited data analysis supports them.