“Pavlovian A conditioning” – the procedure as developed by Pavlov, involving the pairing of CS and US, with the stimulation form the US being, at least in part, influenced by the subject’s responses. For example, the stimulation form a food US that is seized and chewed would be different form that received if, because of partial food satiation, the food was not eaten with equal eagerness.
“Pavlovian B conditioning” --- the procedure developed during Pavlov’s investigations of conditioned morphine reaction (see, for example, Pavlov, 1927). In such cases, stimulation by the US is not influenced by the US is not influenced by the behavior of the subject: the nausea and salivation occur essentially independently of instrumental responses. Of the subject.