We recently noted Martin Smith's helpful overview of recent work in the epistemology of religion. Also worth reading is his recent defense of the thesis that belief in God has relevant and tight parallels with belief in an external world: "God and the External World" (Ratio 24:1 (2011), 65-77). Here's the abstract:
There are a number of apparent parallels between belief in God and belief in the existence of an external world beyond our experiences. Both beliefs would seem to condition one's overall view of reality and one's place within it – and yet it is difficult to see how either can be defended. Neither belief is likely to receive a purely a priori defence and any empirical evidence that one cites either in favour of the existence of God or the existence of the external world would seem to blatantly beg the question against a doubter. I will explore just how far this parallel can be pushed by examining some strategies for resisting external world scepticism.