4-11-08 - Learning Animal Learning Laboratory learning....

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1 Learning BioNB 222 April 11, 2008 R Hoy Animal Learning Laboratory learning. – Originated with animal studies – Associative paradigms Pavlovian or Classical Conditioning Instrumental or Operant Conditioning – The principles apply to all animals, even humans. • But it’s not the way we humans teach and learn Human Learning • Learning in the “real world” is social . – Learning as occurs in human societies is social and cognitive – Last time: speech learning in infants as an example – Social cognitive learning is only now being investigated in animals—mainly primates and a few social mammals Pavlovian Conditioning: learning is guided by sensory associations Ivan Pavlov www.radford.edu/~jmontuor/XPsyc%20333/333PPClassical_ conditioning www.radford.edu/~jmontuor/XPsyc%20333/333PPClassical_ conditioning
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2 www.radford.edu/~jmontuor/XPsyc%20333/333PPClassical_ conditioning A white-board moment: Pavlovian Conditioning/Training • U = unconditioned • C = conditioned • S = stimulus • R = response/reflex • N = neutral • t = time www.radford.edu/~jmontuor/XPsyc%20333/333PPClassical_ conditioning Conditioning Learning Curve www.radford.edu/~jmontuor/XPsyc%20333/333PPClassical_ conditionin g Conditioning Learning Curve www.radford.edu/~jmontuor/XPsyc%20333/333PPClassical_ conditionin g Conditioning can occur at different rates Learning curve for conditioning 2. Contingency (if…then…) • Contingency represents the number of times that the CS is paired with the US. • Maximum contingency is obtained when the CS precedes the US on every trial. (100% association) • The less often the CS precedes the US, the weaker will be the conditioned response. • If the CS precedes the US on 50% of the trials or less, little conditioning will occur. • Bottom line: associative learning, including Pavlovian/classical conditioning is about making predictions and expectations.
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3 Extinction • If the conditioned stimulus is no longer followed by the unconditioned stimulus, responding will gradually slow down and
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This note was uploaded on 04/30/2008 for the course BIO 2220 taught by Professor Hopkins,c.d. during the Spring '08 term at Cornell University (Engineering School).

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4-11-08 - Learning Animal Learning Laboratory learning....

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