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Chapter 7 Classical Conditioning Operant conditioning Social learning Cognitive approach Ivan Pavlov’s method of conditioning, in which associations are made between a natural stimulus and a learned, neutral stimulus Ivan Pavlov researched ◦ Mental disorders ◦ Aging ◦ Personality types Associations Worked with digestive system Used dogs in experiments Important words ◦ Stimulus – anything that elicits a response ◦ Response – a reaction to a stimulus Ex. Food (S) Salivation (R) Unconditional stimulus – a stimulus that automatically elicits a response, as meat causes salvation Unconditional response – an automatic response to a particular natural stimulus, such as salvation to meat Ex. Food (UCS) Salivation (UCR) Conditioned stimulus – a previously neutral stimulus that has been associated with a natural or unconditional stimulus Conditioned response – a response to a stimulus that is brought about by learning – for example salivating at the word pickle Ex. Experimenter (NS) Food (UCS) Salivation (UCR) Conditioned stimulus and response leads to Ex. Experimenter (NS) Food (UCS) Salivation (UCR) Experimenter (CS) Salivation (CR) John B. Watson ◦ Originally worked with lab rats ◦ Everything learned resulted from stimuli and responses ◦ Deep emotions are the result of associations and learning Fear Experiment ◦ “Little Albert” Loud sound (UCS) Fear (UCR) Association Phase Rat (NS) Loud Sound (UCS) (UCR) Results Rat (CS) Fear (CR) Fear Stimulus generalization – process in which a response spread from one specific stimulus to other stimulus that resembles the original Extinction – the gradual loss of an association over time Spontaneous recovery – the sudden reappearance of an extinguished response Watson Proved 1. Conditioning of emotions to neutral objects is possible 2. Conditioned emotion can generalize to other objects that have similar characteristics Conditioning that results from the individual’s actions and the consequences they cause Organism plays role in what happens Do things based on learned results B. F. Skinner The way we turn out is a result of what we learn from all the operations we make over the years Reinforcement – something that follows a response and strengthens the tendency to repeat that response Primary Reinforcement – something necessary for psychological or physical survival that is used as a reward Secondary Reinforcement – anything that comes to represent a primary reinforce, such as money Positive reinforcement – reinforcement that involves strengthening the tendency to repeat response by following it with the addition of something pleasant Negative reinforcement – reinforcement that involves strengthening a response by following it with the removal of something unpleasant Punishment – the process of weakening a response by following it with unpleasant consequences Discrimination learning – learning to tell the difference between one event or object and another, the reverse of generalization Shaping – the process of gradually refining a response by successively reinforcing closer approximations of it Chaining – reinforcing the connection between parts of a sequence Continuous reinforcement – occurs every time Schedules for reinforcements – different methods Partial Reinforcement Schedule – not given each time act is performed ◦ Variable Ratio Schedule – Random set number of times ◦ Fixed Ratio Schedule – Set specific number of times ◦ Variable Interval Schedule – Can happen at any time ◦ Fixed Interval Schedule – Occurs after a specific amount of time has passed Social Learning – learning from the behavior of others Observational learning – a form of social learning in which the organism observes and imitates the behavior of others Cognitive approach – an approach to the study of learning that emphasizes abstract mental processes and previous knowledge Focuses on how knowledge is obtained, processed and organized Rewards have different affects Simple conditioning is not so simple Knowledge based reasons for phobias Latent learning – learning that is not obvious but goes on under the surface Expectancies – beliefs about our ability to perform an action and to get the desired reward Reinforcement Value – what its worth to you E. C. Tolman ◦ Cognitive Maps a mental image of where one is located in space ◦ Strategies methods for solving problems