By 'depend' I don't primarily mean causal dependence. One heuristic: If you're an internalist, you're likely to think that a brain in a vat could have the same mental states as you. If you're an externalist, you're likely to think that a brain in a vat couldn't have the same mental states as you even if it's physical state and introspective semblance were exactly alike, because the brain in a vat's environment and history constitutively (and not just causally) alter which mental states it counts as having.

Perhaps the clearest example of this trend is disjunctivism, which is in the Externalism cluster. Disjunctivists think that a hallucination as of an apple, and a veridical perception of an apple, have nothing really in common; they may introspectively seem the same, and they may have a lot of neurological details in common, but any class that groups those two things (and only those two things) together will be a fairly arbitrary, gerrymandered collection. The representational, causal, historical, etc. links between my perception and the external world play a fundamental role in individuating that mental state, and you can't abstract away from those contextual facts and preserve a sensible picture of minds/brains.

I would argue that this was a problem for the professional philosophers who took this survey as well. A moral philosopher may have a passing knowledge of the philosophy of time, but not enough to defend the particular position she reports in the survey.

Yes. It would be important to at least have respondents provide some self-assessment of how well they understand each question.

I agree. I think it would make more sense to just have discussions about whichever of the topics interested people, rather than having a fixed poll. If there were such a poll, it should be one designed to encourage 'other' views and frequent revisions of one's view.

I might make something like this at some point, if only as a pedagogical tool or conversation-starter. At the moment, I have good introductions and links explaining all the PhilPapers questions up here.

Glancing at the survey, it looks like it contains a large amount of jargon that although very likely accessible to professional philosophers, most people here (myself included) would not know what most of the questions are asking, so I don't think it would be practical to do this survey as is among LW.

Right, but I meant in an accessible way that would let us analyze the data-- e.g. a google survey.