in reply to
Re: What you refuse to see, is your worst trap
in thread What you refuse to see, is your worst trap
Several XP discussions bring up the idea of "egoless programming". Weinberg's well-known in those circles.
As far as XP goes, though, there's a whole lot more than just regular peer review. Pair programming is recommended for all code that lives longer than a day. The entire team owns the entire codebase; there are no little fiefdoms. Debugging's less important because the code is frighteningly well-tested. The test blindness is lessened, partly because of pair programming but mostly because of test-first development.
XP's not perfect for everyone in every situation, but it takes into account many of these psychological issues.