Re: Why does Photoshop invert my path selection as default?
With the path tool selected, take a look at the options bar. On the right side you'll see four squares. The first one (on the left) is "Add to path area" and the second one is "Subtract from path area". You probably have the second one selected instead of the first one when you create your path; that will reverse the path selections. If that turns out to be the problem, just click the first square before making your path. You can also just hit the + or - keys to switch back and forth.
Hope this helps.