I agree with some of the other commenters that the term “decision theory” ought to be reserved for the overarching problem of which decision algorithm to use, and that the distinction you’re referring to ought to be called something like “adversarial” vs “non-adversarial” or “rival” vs “non-rival”. Nonetheless, I think this is an interesting handle for thinking about human psychology.
If we view these as two separate modes in humans, and presume that there’s some kind of subsystem that decides which mode to use, then false positives of that subsystem look like potential explanations for things like The Imp of the Perverse, or paranoia.
I agree with some of the other commenters that the term “decision theory” ought to be reserved for the overarching problem of which decision algorithm to use, and that the distinction you’re referring to ought to be called something like “adversarial” vs “non-adversarial” or “rival” vs “non-rival”. Nonetheless, I think this is an interesting handle for thinking about human psychology.
If we view these as two separate modes in humans, and presume that there’s some kind of subsystem that decides which mode to use, then false positives of that subsystem look like potential explanations for things like The Imp of the Perverse, or paranoia.