Learning = lasting change caused by an experience | 3 responses to stimuli reflexes, instincts, learning. Does not require linking or association of stimuli. Learning following repeated exposure to a single stimulus or event. E. g. first night sleeping in an unknown place you may find yourself awakened by noises; after a few nights, you are able to sleep without interruption: you have learned not to associate sound with any meaning. Two types of non-associative learning: habituation. Form on non-associative learning where repeated presence of a stimulus leads to a reduced response. E. g. you walk by bird"s nest, every time it flies down to guard its nest, soon it stops doing that or decreases the frequency of doing so; the bird has habituated to you. Dishabituation: full form recovery of the habituated response: sensitization. Involves altered response in presence of a stimuli. Repeated presentation of a stimulus leads to a reduction in response.