What is PRT?
PRT stands for Positive Reinforcement Training: a form of condition first started in use (as PRT) by B.F. Skinner. Skinner looked at human/animal behavior in a little different light than most psychologists/psychiatrists did at the time (and still do.) Instead of dealing with things like the psyche and 'the soul', he tried to look at things from an empirical perspective. (Also called 'blackbox' theories. The word blackbox referred to the brain itself.)
Skinner seemed to believe that there was no way of looking at an animal's behavior (and it's brain indirectly) to say exactly WHY it was doing something, only the fact of the circumstances that would change behaviors of the subject (thus coining the term 'behavioralism'). By saying "I don't care why it works, I only know it works", Skinner was able to quantify behaviors and separate the "what from the "why" and get results from psychological studies. Skinner's risk of stepping out only on empirical evidence (like Pavlov's experiments i.e. condition a dog to expect a bell before dinner, ring the bell and 99% of the time he will salivate in expectation of the dinner to come), helped animal behaviorists to break a series of behaviors into sequence of quantifiable stimuli and responses and make animal behavior studies a more 'scientific' pursuit.