The very subjectivity of privacy is one of the reasons that previous studies have withered. Attempting to base research on one or more definitions of privacy is indeed limited.
Think of privacy.
How would you visualize it?
How would you seek to explain your expectations and guidelines for information disclosure?
When asked individually it is difficult enough for us to conceive of a descriptor for privacy that is clear or concise, let alone consistent. Instead, I start with a notional idea of privacy that is non-discipline specific: that we as individuals have an interest in privacy. In this way, the model may indeed suffer from being closely linked to one concept versus another.
The advantage is we are well aware of these biases, and can surface them here.
As well, the model can be adjusted to adapt as it is tested and refined. It is possible, then, to devise tests for each definition to determine if the formal model does indeed bring people closer to an acceptable point of privacy representation and people’s expectations thereof.