CH7: Learning Flashcards
Learning
interacting w/ enviro to prdc change in mental processes/behaviours
extinction
CS repeatedly presented w/o US causes CR to stop over time
spontaneous recovery
response randomly elicited after extinction
acquisition
gradual association of US & CS
stimulus generalization
stimuli like CS elicit CR
stimulus discrimination
stimuli like CS don’t elicit CR
biological preparedness
some NS more likely to become CS and easier
Rescorla-Wagner model
CS-US strength depends on how surprising US is
Little Albert Experiment - who? and so what?
Watson; nurture can shape anyone into anything (cl. conditioning -> behaviourism)
Thorndlike’s Law of Effect
behaviour producing good consequences will be repeated, bad consequences won’t
antecedent / discriminative stimulus
environmental event preceding behaviour
Hebb’s rule
when neurons consistently fire together (stim+resp), they wire together (association)
reinforcement
increase probability of behaviour
punishment
decrease probability of behaviour
positive
apply stimulus
negative
remove stimulus
shaping
reinforcing behaviour more and more like desired behaviour
power
reinforcement must be strong enough to affect response
immediacy
consequence + response close together
contingency
if-then relation b/w response + consequence
Premack Principle
high probability behaviour used to reinforce low probability behaviour
escape
negative reinforcement; response stops existing stimulus
avoidance
negative reinforcement; response prevents stimulus
2-factor theory
classical conditioning = fear, operant = ability to escape fear