You've got a no-fail means of recognizing the really dependable people out there—a nifty inner gizmo Martha Beck calls a trust-o-meter.

If your inner software is working well, your trust-o-meter is guiding you safely through life's many hazards. If it isn't, you smash into one disappointment or betrayal after another. The good news is that no matter how faulty your trust-o-meter, it's never too late to debug the system. Here's one short quiz to help you determine if your trust-o-meter needs recalibrating.