Neuro-Associative Conditioning
Neuro-Associative Conditioning or NAC is a science developed by Anthony Robbins, author of "Unlimited Power", "Awaken the Giant Within" and the "Personal Power" tape series, from the foundations of Neuro-Linguistic Programming or NLP which was developed by Richard Bandler and Dr. John Grinder in their effort to model communication strategies of effective therapists.
This system was based upon Korzybski's work of general semantics stating that a person's experience is not reality but a representation of it ("The map is not the teritory").
NLP is also based upon the primary psychology and language strategies utilized by Dr. Milton Erickson to shift the internal representations and therefore, the experience and the behaviors of patients.
The science of Neuro-Associative Conditioning is a system that describes the process of change in human beings and is based upon the premise that there are two determining reasons for human behavior: 1) the need to avoid pain and/or 2) the desire to gain pleasure.
In order for the brain to efficiently evaluate how to rapidly accomplish these two tasks, you must create neuro-associations (associations within the nervous system) that are used to instantly determine the meaning (pain/pleasure) of situations, people, things, sounds, emotions, etc. These neuro-associations are the directing force of all human behavior.