Animal Behavior: LearningNon-Associative and Associative Learning Non-associative Learning Most animals show some degree of non-associative learning. This means they change their response to a stimuli without association with a positive or negative reinforcement. Animals frequently subjected to a stimulus will often become habituated to that stimulus--they will show a reduction or total elimination of response to a stimulus without positive or negative reinforcement. If you poke them, sea slugs (Aplysia) will curl inwards. However, if you poke them repeatedly, the response will become less and less extreme until they do not withdraw at all. When presented with a novel stimulus, such as an electric shock, the sea slugs will recover their withdrawal response to poking. This phenomenon in which the habituation disappears is, conveniently, known as dishabituation. Furthermore, the sea slugs can be sensitized, whereby
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