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Taste Aversion
•Learned avoidance of a
particular food.
•Foods often make us ill
if they are unhealthy,
even poisonous
Cawley’s Taste Aversion
Adapting to the Environment
Taste Aversions
Spontaneous Recovery
Generalization and Discrimination
• When a conditioned
stimulus (CS) is no
longer followed by the
unconditioned stimulus
(US), it will eventually
lose its ability to bring
about a conditioned
response (CR).
Spontaneous Recovery
• Organisms display
responses that were
extinguished earlier
• CS is again applied
after an absence
• The CR reappears,
though often weaker
Generalization & Discrimination
• Generalization – Act of responding in the same
way to stimuli that seem to be similar, even if the
stimuli are not identical
– Ex.→ Cawley gets sick when he eats a Hershey bar
• Discrimination – Act of responding differently to
stimuli that are not similar to each other
– Ex → Cawley WILL eat coconut cream pie
Applications of Classical
• Flooding
• Systematic Desensitization
• Counterconditioning
•A person is exposed to the harmless stimuli until fear
responses to that stimuli are extinguished
•Effective but very unpleasant
Systematic Desensitization
• People are taught relaxation techniques
• Gradual exposure to feared stimulus
• A pleasant stimulus is paired repeatedly
with a fearful one, counteracting the fear.
ALL human behavior
is a matter of
• John Watson