ch 7 - Ch7: Learning: habituation: conditioning:

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Ch 7: Learning and Adaptation Adapting to the Environment -Learning: process which exp produces a relatively enduring change in an organism’s  behavior or capabilities -habituation: invl change in behav that results from repeated exposure to stimulus -conditioning: invl learning associations b/w events classical conditioning: when 2 stimuli become associated w/ one another so that the  presentation of one stim will trigger the other operant conditioning: associate  observational conditioning: observers imitate the behav of a model I. Learning as Personal Adaptation -evolution is adaptations passed down biologically across generations -learning is process of personal adaptation how organism’s behav change in resp to env stim during lifetime II. Habituation -Def: a discrease in strength of resp to a repeated stim ex) if sitting in room and repeated clicking sound, eventually notice it less than initially serves a key adaptive funct: if resp to every stim in env, would become  overwhelmed/exhausted. By learning to not resp to uneventful familiar stim, organisms  Classical Conditioning: Associating One Stimulus With Another -Classical conditioning: organism learn to associate 2 stimuli (a song and a pleasant  event) such that one stimulus (song) will elicit a resp (feel happy) that originally was  elicited only by the other stimulus (pleasant event) -basic form of learning -elicited responses: are automatically triggered by some stim (reflexive)
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I. Pavolv’s Dog -classical conditioning is a basicl learning process that perform a key adaptive func:  alerts organism to stimuli that signal the impending arrival of an important event II. Basic Principles A. Acquisition -Def: period during which a resp is being learned -classical conditioning process NS   UCR UCS   UCR NS+UCS   UCR CS   CR -during acquisition, CS must be paired multiple times w/ UCS to establish strong CR -If UCS is intense and aversive, conditioning may require only one CS-USC pairing  one-trial (single-trial) learning (ex. car phobia) -learning occurs quickest with forward short-delay pairing (CS appear first and still  present when UCS appear) -forward short-delay pairing: CS appear 1 st  then stop then CS appear after indicates the CS signal arrival of UCS -Simultaneous pairing: present CS and UCS at same time, produces less rapid  conditioning -Backward pairing: CS presented after UCS, learning is slowest -Summary classical conditioning strongest when CS-UCS pairings
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UCS is more intense Sequence invl forward pairing Time interval b/w CS and UCS is short B. Extinction and Spontaneous Recovery
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This note was uploaded on 02/08/2011 for the course PSYCH 101 taught by Professor Passer during the Spring '07 term at University of Washington.

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ch 7 - Ch7: Learning: habituation: conditioning:

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