Upload
ella-logan
View
225
Download
3
Tags:
Embed Size (px)
Citation preview
https://www.youtube.com/watch?v=r0yDoNAVfuc
http://vimeo.com/35754924
Phobias Irrational fears of specific objects or situations Heights, dogs, cats, bugs, snakes, professors,
elevators, tunnels, doctors, strangers, thunderstorms, and germs
How do we acquire these? Probably Classical Conditioning!
Ivan Pavlov Russian physiologist Nobel-Prize winning research on digestion! https://www.youtube.com/watch?v=hhqumfpxuzI
Terminology Neutral Stimulus Unconditioned Stimulus (UCS) Unconditioned Response (UCR)
Conditioned Response (CR) Conditioned Stimulus
Neutral Stimulus Does not originally
produce a response
Pavolv’s bell tone
They preserved Pavlov’s dogs …. #truestory #nobelprize #science
Unconditioned Stimulus
A stimulus that evokes an unconditioned response without previous conditioning (natural, unlearned association)
Meat powder!
Unconditioned Response
An unlearned reaction to an unconditioned stimulus that occurs without previous conditioning
Drooling at the meat powder!
Conditioned Stimulus Previously neutral stimulus that has, through
conditioning, acquired the capacity to evoke a conditioned response
Bell tone!
Conditioned Response Learned reaction to a conditioned response that
occurs because of previous conditioning
Drooling at the bell tone!
This became known as a conditioned reflexo Reflex because they are said to be elicited or drawn
forth because most of them are relatively automatic and involuntary
Trials Any presentation of a stimulus or pair of stimuli How many trials are needed to condition? It
varies (no surprise there)
Classical Conditioning Procedure Summary
First described by Ivan Pavlov, a Russian physiologist
Involves placing a neutral signal before a reflex
Focuses on involuntary, automatic behaviors
https://www.youtube.com/watch?v=Eo7jcI8fAuI
Conditioning and Physiological Responses Immune functioning
o Immunosuppression/antibodies
o Sexual Arousal (quails)
Acquisition Acquisition: the initial stage of learning something
o Based on stimulus contiguity (occurrence of stimuli in time and space)
o Stimuli that are novel, unusual or especially intense have more potential to become CS’s than routine stimuli-they stand out
Extinction Extinction: the gradual weakening and
disappearance of a conditioned response tendency
Conditioned stimulus without the unconditioned stimulus
Spontaneous Recovery Reappearance of an extinguished response after
a period of non-exposure to the conditioned stimulus
Stimulus Discrimination
Occurs when an organism that has learned a response to a specific stimulus that does not respond in the same way to a new stimuli that are similar to the original stimulus
Stimulus Generalization
Occurs when an organism that has learned a specific response to a specific stimulus responds in the same way to new stimuli that are similar to the original stimulus
Baby Albert
https://www.youtube.com/watch?v=hhqumfpxuzI Pavlov
https://www.youtube.com/watch?v=H6LEcM0E0io&spfreload=10 Difference Between Classical and Operant Conditioning
https://www.youtube.com/watch?v=Mt4N9GSBoMI Big Bang