Everyone has no doubt heard of the many behavioral conditioning experiments in which animals in a laboratory are rewarded with sugar pellets or punished with an electric shock for pushing for a particular button.
What if the animal was randomly shocked with no regard to which button was pushed?
The answer is that the animal will take no action because they are not sure what will happen. Basically it becomes to risky to do anything therefore they go into a stressed out shell and wait for something to happen. Eventually the stressed out subject of this type of experiment loses the ability to think clearly due to the environment they find themselves in.