Lecture 6-Outline

Lecture 6-Outline - Experimental Psychology- Learning...

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Experimental Psychology- Learning Lecture 6 Outline II. Stimulus Properties A. Initial Response B. Novelty- familiarity alters conditioning 1. CS Pre-exposure effect - familiarity with a CS retards later conditioning Example: Prior burrito consumption experience it will slow taste aversion to bad burrito- if you are a burrito coinsurer and you eat a burrito and get sick the likelihood of forming a taste aversion will be less 2. US Pre-exposure effect - familiarity with a US alone slows CS development to that US Example: If you are prone to GI issues (US), bad burritos will less likely cause taste aversion Why? 3. Associative Interference- pre-exposure makes stimuli less able to make new associations -Inhibitory context (restaurant) may signal safety 4. Memory Interference- conditioning is disrupted by conscious memory of the CS or US -You know that at other times you didn’t get sick C. Stimulus Properties also affect conditioning: 1. Intensity- Perceptible? Example: Loudness of a tone (louder tone= more conditioning) 2. Salience- Significance? Example: Gatorade after workout (only tasty after workout) 3. Naturalism- Naturalistic? Example: Ms. Quail D. Belongingness *- Is the CS is relevant to the US? Garcia and Koelling (1966) Sickness after eating poisonous foods: Interoceptive cues belong together- things that happen internally Peripheral pain after a sending a predator: Exteroceptive cues belong together- things that happen external to your environment Test: H20 restricted rats Test Conditioning: During H20, all rats co-exposed to: CS1-Taste+CS2-Audiovisual Rats were divided into two groups: Group 1- Shock Group 2- Sickness Test Trial with 1 CS at a time
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Lecture 6-Outline - Experimental Psychology- Learning...

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