This research culminated in Thorndike’s famous “Law of Effect” (1911), the first canonical psychological law of associationist learning. It asserted that responses that are accompanied by the organism feeling satisfied will, ceteris paribus, be more likely to be associated with the situation in which the behavior was executed, whereas responses that are accompanied with a feeling of discomfort to the animal will, ceteris paribus, make the response less likely to occur when the organism encounters the same  situation.[11] The greater the positive or negative feelings produced, the greater the likelihood that the behavior will be evinced. To this Thorndike added the “Law of Exercise”, that responses to situations will, ceteris paribus, be more connected to those situations in proportion to the frequency of past pairings between situation and response. Thorndike’s paradigm was popularized and extended by B.F. Skinner (see, e.g., Skinner 1953) who stressed the notion not just of consequences but of reinforcement as the basis of forming associations. For Skinner, a behavior would get associated with a situation according to the frequency and strength of reinforcement that would arise as a consequence of the behavior.