Sticking Brake Caliper?

I need some advice on how to determine if my brake caliper is going bad, sticking. The vehicle "squeals" intermittently coming from the front right side. I have just replaced the pads, so I know it is not the indicators. I have heard that a sticky caliper can make the pad barely touch the rotor and give a squealing noise. How could I tell if the caliper is going bad? Can anyone give me any hints or tips on this situation. Thanks tons!!!