Gregory Bateson would say that information is the ‘difference that makes a difference.’ So we could say/see that judges in shows like Xfactor, Project fame, et al, receive information from the differences created by the contestants’ performances and some reference points. And there are differences between the differences so that they have information to receive and judge.
You have received something from every difference that makes a difference to you: information.
Practically, judgement is information processing information to produce information. And a lot (if not all) of the manifestations of self (behaviour) come from previous judgements. So that change is possible with the right information processed correctly.
A bit more technically, information is the reduction in uncertainty. This is easy to picture: how certain are you that what he meant to say by what he said, was what you interpreted from what you heard. The larger the reduction in uncertainty, the more information you received (as opposed to noise, or confusion), and the more correctly certain you (think you) are.
To have information is thus to have accepted certainty about a particular reality or perception.
There is a mantra that says something like, ‘get feedback to get clarity.’ Indeed, the main reason for feedback is to ensure the correctness of our eventual perception cum certainty. Fundamentally, we seek feedback for certainty. This is important because certainties are at the core of our psychology, hence, of our experience of reality, and behaviour.
To summarise: information gets transformed into our certainties, and our certainties result in our behaviour. Every movement is motivated by information, and produces information. And every action, tangible or otherwise, is a statement of certainties.