Setting factors can be either part of the organism or external to the organism. If we go to a grocery store before a meal we buy more than if we go after a meal. Similarly, a person who is ordinarily mild-mannered might be ready for a fight when drunk. The varieties of non-organismic settings are almost infinite. According to the interbehaviorist, every object that we see, hear, smell, taste, etc. occurs by means of a medium.
Sound waves are necessary for hearing and a light for seeing.
Interbehavioral psychology insists that we must not confuse media with stimulus functions. Those psychologies that assume that a medium is the stimulus have to invent some mechanism to convert the vibrations back to an appearance of the object. Interactional History and Personality Finally, our history of interactions is of utmost importance. From the time of our birth until the time of our death we continue to develop our interactional history and this influences everything we do. Up to this point the descriptions have been of what the system identifies as component events of the field.