Evoke a response that was originally evoked by another stimulus. Stimulus that occurs without previous conditioning: conditioned stimulus (cs) a previously neutral stimulus that through. Extinction: spontaneous recovery reappearance of an extinguished response after a period of no exposure to the conditioned stimulus, new response is usually weaker than before, stimulus generalization occurs when an organism that has learned a. Instrumental learning i: law of effect if a response in the presence of a stimulus leads to positive. Effects, the associations between the stimulus and response is strengthened: learning is gradually stamped in to the mind, reinforcement occurs when an event following a response increases the. Reinforcement in a skinner box as a function of time. Is adaptive, given you rarely see the same stimulus more than once. John b watson: little albert experiment, the more similar new stimuli are to the original cs, the. Greater the generalization: stimulus discrimination occurs when an organism that has learned a.