Most of our biases (and we all have them,) are unconscious. Some interesting research, as well as an opportunity to both participate in research and discover a little something about your own unconscious biases can be found at Project Implicit

Some background and additional information, or perhaps, context can be found here
and here.

The second link in the above paragraph is likely to be experienced as less emotionally ladened than the first, and perhaps lead people to be less likely to be averse to exploring what their own unconscious biases might be, and makes most explicit that we do not have to be victims of our unconscious biases when it comes to how we make choices in the world.