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This overview delves into key concepts of classical conditioning such as higher-order conditioning, overshadowing, blocking, and latent inhibition. It highlights experiments like Little Albert's and their implications on emotional responses, showcasing how fears and prejudices can be conditioned. Furthermore, it discusses counter-conditioning techniques, including systematic desensitization and flooding, as effective methods to combat phobias. This analysis integrates real-life applications of classical conditioning in advertising and how emotional associations influence consumer behavior.
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Review from last class…. • Higher order conditioning • Overshadowing (Stimulus Features) • Blocking & Latent Inhibition (Prior Experience)
second-order CS first-order CS tone (CS1) food (US) Higher Order Conditioning • Need to maintain 1st order conditioning • Tone-Food • Note that Light is still never directly paired with food! Light (CS2) But what would happen to the Tone? - Extinction! Phase 1: ToneFood Phase 2: LightTone ToneFood
Overshadowing (Stimulus Features) • A more salient stimulus will interfere with learning about less salient stimuli • e.g. compound stimuli • Loud noise & dim light food • Light not learned about
Blocking (Prior Experience) • Novel stimuli presented in compound with an existing CS will not be learned about • CS must be informative (i.e. add new information) • Light won’t be learned about
Latent Inhibition (Prior Experience) • Pre-exposure to a CS makes it harder to condition • Learn first that CS does not signal US MORE TRIALS! Phase 1: Buzzer No Food Phase 2: Buzzer Food “Regular” Classical Conditioning: Buzzer Food
Chapter 4 Pavlovian (Classical) Applications
Conditioned Suppression • Conditional Response (CR) involves suppress behaviour that would otherwise be performed 1) Train rat to press bar for food 2) Classical Conditioning: Pair light with shock • Scared rats “freeze” • i.e. when shock is coming, the rat will freeze • While the rat is “frozen with fear”, it will NOT be pushing the bar • After conditioning, the rat should freeze in response to the light (CR) • Compare the amount of bar pressing when light is off and when light is on
Conditioned Emotional Response • Emotional reactions • Learned • Classical conditioning
Little Albert • Watson & Rayner (1920) • Hard line behaviourist • Nature vs Nurture • Fear previously thought to be: • Innate • Faulty reasoning • Initial studies showed that infants NOT afraid of many “innately frightening” stimuli • E.g. snakes, fire, rats • Conditioned fear
Methodology • Albert (11 months old) • Present rat … observe • No initial fear • Present rat … bang metal bar (loud noise) • UR = startle • Present rat … Albert cries, avoids • CR • Present other furry objects • generalization
Terminology • US = noise • UR = startle response/fear • CS = rat • CR = fear/avoidance
Conclusions • Fear response produced through classical conditioning • Watson suggests fear, hate, love conditionable
Albert Issues • Sample size • Replication • Generalization to other objects
Prejudice • Prejudice related to hate and fear • Hate and fear conditionable • Staats & Staats (1958) • Paired positive, negative, neutral words with nationalities • Subjects rate nationalities • Ratings correspond with conditioning
In real life… • Where do these associations come from? • Political speeches • Media coverage • Negative images, words, impressions paired with identifiable group
Counter Conditioning • Mary Cover Jones (1924) • Eliminate phobia via classical conditioning • Peter feared rabbits • Peter eats snack (US) … present rabbit (CS) • Associate positive US with CS
Systematic Desensitization • A type of Counter-conditioning • Also Aversion therapy • Relaxation techniques • Gradual introduction of phobic stimulus • Imagination up to real situation
Flooding • “Flood” patient with exposure to fear-inducing stimulus • Not counter-conditioning • Kind of like habituation but… • … not discreet trials!
First-Order C.C. in Ads • Product (initially neutral --> CS) • Pair with stimulus that elicits positive emotion (US) • Consumer sees product, has positive CR
Example • Sausages • US = funny situation • UR = happiness • CS = brand • CR = happiness, amusement, positive emotion
Second-Order C.C. • Use previously conditioned celebrity, situation, etc. • CS1 & US • Now, pair brand (CS2) with CS1
Example • Sprint • Peyton Manning = CS1 • Positive feeling = CR • Attractive, successful, lifestyle = US • Positive feeling = UR • Sprint mobility = CS2 • Assumption: buy phone, be rich, popular, laser rocket arm
Example • Japander.com • Brad Pitt and 503 Jeans • Pitt (CS1), leading man, celebrity, rich, pretty = desirable (US), 503s (CS2) • Performance-void
Problems • Celebs don’t always maintain status • Tom Cruise spoof • Michael Jackson
Paraphilia • “Incorrect love” • Fetishism, masochism, pedophilia, etc. • More common in males • Freud: unconscious forces • Classical conditioning: association formed
Example: Masochism • Generally, CS is previously neutral • But, a US, by pairing with another strong US, can become a CS • Pavlov: shock (CS) for food (US) • Masochism: pain (CS) for sexual pleasure (US)
Counter Conditioning • Pair undesired CS with strongly aversive US (e.g., nausea) • Aversion therapy • Awareness not necessary for conditioning
Treatment • Very difficult with some types of paraphilia • Pedophilia, rape? • Evolutionary Psychology • Male attraction to youthfulness • Desire for dominance and power
Typically • Long-delay or trace conditioning • US is food poisoning, illness, etc. • UR is nausea induced pain • CS is novel food/flavour • CR is avoidance, nausea • Violation of contiguity?
Explanations? • Sensitization • Aftertaste • Biological preparedness • Taste aversion a special case
Biological Preparedness in Taste-Aversion • Garcia & Koelling (1966)
Explanation • Biological predisposition • Taste and nausea • Audiovisual and shock • Must know about CS-US relationship before predicting nature of CR • Certain stimuli more easily associated than others
Allergic Reaction • Release of histamines • Body’s immune response to allergens • Not all allergic responses biological • Can be learned
Examples • Patient sneezes when presented artificial rose • Allergies to pets; sometimes not as bad if don’t know if pets are in house
Russell et al. (1984) • Expose guinea pigs to BSA • Becomes allergen (US for histamine release) • Pair BSA with odour of fish or sulphur (CSs) • Expose guinea pigs to odours and get increased histamines (CR) in bloodstream • Preparatory value of classical conditioning