PPT-Chapter 10 Extinction of Conditioned

Behavior Effects of Extinction Procedures Response Recovery after Extinction Enhancing Extinction Performance Paradoxical Reward Effects in Extinction Extinction Procedures Classical Conditioning . ASTR 1420. Lecture. 9. Sections : 4.6, 6.4, 11.3. Mass Extinctions in the Earth History. Mass Extinctions. Check . http://en.wikipedia.org/wiki/Impact_event. http://en.wikipedia.org/wiki/Mass_extinction. Pavlovian. Conditioning or Classical Conditioning. Ivan Pavlov . Early 1900s. A Russian physiologist . digestive system. Nobel prize .  Interested in the Salivary reflex. . The reflex seemed to depend on the nature of the stimulus. . EVOLUTION AND EXTINCTION. A TROPICAL MURDER MYSTERY. Finding the missing birds of Guam. A TROPIAL MURDER MYSTERY. . Finding the missing birds of Guam. 12. At the end of this chapter you will know:. Frode Svartdal. . University. of . Tromsø. . Oct. 2013. Extinction: Basics. Extinction is defined in terms of a reinforcement process. Extinction contingencies. The . stimulus. (S. R. or US) is discontinued. (. Pavlovian. & Instrumental). Learning, Psychology 3510. Fall, 2016. Professor Delamater. Extinction: Procedure & Process. The extinction procedure refers to the removal of reward, when it previously occurred.. ASTR 1420. Lecture . 9. Sections : 4.6, 6.4, 11.3. Mass Extinctions in the Earth History. Mass extinction . (a.k.a. extinction event) : is a sharp decrease in the number of species in a relatively short period of time.. What is Behavioural Psychology?. It is based on the belief that psychologists need . empirical evidence. in order to understand and change human behaviour.. . Behavioural psychologists use . experimentation. Opportunities and. Adaptive Radiations. Overview. Extinctions. Adaptive Radiations—New Niches. Stem mammals survived and experience adaptive radiation.. Evolution of birds, feathers, flight, and flightlessness.. Remember. Operant conditioning extinction differs from classical conditioning extinction. During extinction, responding decreases to baseline levels for both classical and operant conditioning. BUT: Operantly conditioned behavior shows:. Outline . Effects of Extinction Procedures. Decreased responding. Increased variability in responding. Extinction of Original Learning. Spontaneous Recovery. Renewal of Original Excitatory Conditioning. Essential Questions. What is extinction?. Which species have become extinct in modern times? . What are the characteristics of past mass extinctions? . How do modern extinction rates compare with natural (background) rates?. Conditioning. Associative Learning. Associative Learning . – . a form of conditioning in which the organism learns the . correlation . between two stimuli . (classical conditioning). , or between a response and stimulus . The Species Approach. Core Case Study: Polar Bears and . Global Warming. Polar Bears. 20,000-25,000 . in the . Arctic. Most calories in winter from seals on sea . ice. Environmental impact on polar bears. Background vs. Mass Extinction. Background extinction. = species gradually and continuously go extinct, creating a turnover of species through time.. Background extinction and mass extinction. 0. 600.