PSYS 100 Lecture Notes - Lecture 8: Operant Conditioning, Chemotherapy, Classical Conditioning
13 Oct 2016
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Learning: relatively permanent change in behavior that occurs as a result of experiences with our environment. Most people have a fear response just sitting in a dentist"s chair. Before learning: unconditioned stimulus (ucs) (injection with long needle) > unconditioned response (ucr) fear of pain. Neutral stimulus (ns) (waiting room) > nothing. After learning: ns (wait room) > ucr (fear) > conditioned response (cr) Ns (wait room) > conditioned stimulus (cs) > conditioned response (cr) We see the same learned fear in dogs & cats when we take them to the vet. 1927: ivan pavlov rst outlined this type of learning through experiments with dogs. Food (natural or unlearned stimulus) > unconditioned stimulus (ucs) > salivation (natural or unlearned response) > unconditioned response (ucr) Stimulus that does not lead to ucr (salivation) > neutral stimulus (ns) >/ unconditioned response (ucr) Pair the ns (tone) with the ucs (food) repeatedly.
