When you're hiring someone, you need to consider how they will fit into corporate culture. Sometimes you'll have trouble figuring that out. Try imagining if you'd like to have a beer with them after work.
Photo by tedxgrandrapids
The Muse offers a few ideas on choosing among many qualified candidates. Part of any job is the social interactions, both during work and after:
which of the two would you rather have a beer with after work? There's no way you can know everything about how a candidate will interact on a daily basis, but you can usually get a pretty good sense based on your gut reaction to whether you'd want to hang out with him or her.
Don't base an employment decision on just this limited test, of course. Apply this test when everything else checks out and you're struggling to find the right candidate. If you don't drink beer, try thinking about having lunch with them or a nice coffee break.