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Lecture 5

Lecture 5.docx

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Steve Joordens

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Conditioned Emotional Responsesmany stimuli are able to arouse emotional response disgust contempt fear anger sadness tenderness longing or sexual desiremany had no special signifance but were paired with stimuli that elicited strong emotional reaction so they acquired emotional or evaluative signifanceTodrank Byrnes Wrzesniewski and Rozinpeople associated pleasant or unpleasant odour with attractive or unactriveness of person in photographphobiasunreasonable fear of specific onjects or situations learned through classical learningat some time early in life person was exposed to nowfearsome object in conjunction with stimulus that elicited pain or fear classical conditioning can occur without direct experience with CS or UCScan be learned through observation vicariouslyimaginary episodes that we picture as we hear or read story UCS can provide imaginary stimuli CS that lead to real conditional emotional responses CRtherapists use knowledge of principles of learning to eliminate them suggestions that biologically relevant stimuli are especially prone to classically conditioned emotional responses What is learned in Classical Conditioningresearch shows that for classical conditioning to occur CS must be reliable predictor of UCS neutral stimulus becomes a CS only when following conditions are satisfiedCS regularly occurs prior to presentation of UCSCS does not regularly occur when UCS is absentprinciple has been clearly established by conditioning phenomenon known as blockingblockingprevention of or attenuation in learning that occurs to a neutral CS when it is conditioned in presence of a previously conditioned stimulus CSA is paired with UCS then new CSB is presented together with CSA and compound of 2 stimuli is followed by UCS compared to condition where CSA has not been previously trained CSB acquires little if any CRUCS is also predicted by CSA so CSB brings no new information about UCSwould only provide new information if the UCS changed at same time CSB was introducedclassical conditionig provides two types of information what and when of future eventswhatallows animals to learn that particular event is about to occur behaviour is determined by memory of event
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