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Learning Chapter 7
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Learning Behavior Change Relatively enduring Practice and experience
You learn by observing Change Connections between neurons are formed Relatively enduring Change is usually permanent Practice and experience Reinforces
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Learning Stimulus – produces activity in an organism
Anything perceived by the senses – smell, touch, taste, sight, hearing Response – reaction of an organism to a stimulus Stimulus: Bright light Response: Close/cover your eyes
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Aristotle Greek philosopher 4th Century B. C. Laws of Association
Associations are mental connections between two stimuli
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Ivan Pavlov Russian psychologist Won the Nobel Peace Prize
Classical Conditioning Studied the role of the salivary glands in digestion
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Natural Response Unconditioned Response (UCR)
unlearned, occurs naturally, no conditioning or training are needed in order to produce this response Unconditioned Stimulus (UCS) the stimulus that causes the UCR
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Conditioned Stimulus and Response
Conditioned response (CR) Learned response Conditioned stimulus (CS) A stimulus presented that wouldn’t normally cause a certain response
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Pavlov’s Experiment What happens when a dog is given food ?
Gets excited, jumps around, salivates What happens when you ring a bell? Gets excited jumps around, no salivating What happens if every time you give a dog food you rang a bell? The dog will eventually salivate What happens now if you ring the bell? The dog will salivate
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Pavlov’s Experiment UCS Food UCR Salivation CS Bell CR
Why does the dog now salivate to the sound of the bell? The dog has learned to associate the bell with food – he learned something!
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Pavlov’s Observations
The following 4 areas play a role in classical conditioning Time between CS and UCS Repetition Extinction Generalization and discrimination
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Applications of Classical Conditioning
1. Counterconditioning Changing a negative response to a positive one 2. Flooding Having a person face their fear continuously 3. Desensitization Gradually exposing a person to something they fear
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Operant Conditioning A behavior is learned in connection with a reward or punishment
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E.L. Thorndike Operant conditioning Placed a cat in a “puzzle box”
One lever in the box would open the door The cat would claw around and eventually find the lever Once the door opened the cat was able to get out and received a reward (food) The cat was put back in the box, it would claw around again and find the lever, get out of the box and receive the reward After a number of trials the cat new exactly where to go to get his reward
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B.F. Skinner Behavior psychologist Respondent behavior
The response that is involuntary, it doesn’t have to be learned, it happens automatically Operant behavior Voluntary behavior, choosing to do something Reinforcement Encourages or discourages a behavior
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Principles of Operant Conditioning
Any response followed by a reinforcing stimulus tends to be repeated A stimulus is considered reinforcing when it increases the rate of an operant behavior
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Primary and Secondary Reinforcements
A stimulus that is tied to some aspect of survival (food, water) Secondary A stimulus that is not necessary for survival, (money, praise)
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Changes in Operant Conditioning
Generalization when stimuli are similar but not identical, and the CR still occurs Discrimination learning the difference between two similar stimuli Extinction getting rid of a response
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Shaping A method of refining a behavior by reinforcing behaviors that are close to the desired behavior Eventually the reinforcements will lead to the actual desired behavior
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Chaining Teaching steps to a desired behavior separately
Once each behavior is linked together you get the actual desired behavior
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Schedules of Reinforcement
How often must a person receive reinforcement for a behavior to continue? Fixed Schedule Given consistently Variable Schedule Given at different rates or times
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Schedules of Reinforcement
Ratio Schedule Based on the number of times a behavior occurs and the rate at which it’s reinforced Interval Schedule Reinforcement is given after a specific amount of time
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Biology of Conditioning
Taste Aversion Develop a dislike for a particular food if it resulted in an illness (biological preparedness) Adaptive behavior Instinctual Drift Instincts We drift towards certain things because of inborn tendencies
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Latent Learning Edward Tolman
Individuals interact with the environment Form associations between two different stimuli Cognitive maps – associations made previously that can be used at a later time Latent learning – using a previously learned behavior at a later time, but when you learned it, it wasn’t obvious that you could use it for something else
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Insight Learning Wolfgang Kohler Figuring out a method or behavior
Placed chimpanzees in cages with bananas hanging from the ceiling In the cages were several boxes Chimps tried jumping and climbing to get to the bananas After a while they studied the boxes They then stacked the boxes, climbed on top and got the bananas
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Cognitive Theories Cognition Thinking Memory formation Learning
Problem solving
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Jean Piaget French psychologist
Mental abilities develop as a function of biological development & experience Schemas contain info. About Objects Actions Events Relationships Example: Morning routine
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Jean Piaget Children are already born with certain schema Suck Reach
Look Grasp
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Stages of Cognitive Development
1. Sensorimotor (birth-2 years) Differentiates self from objects Object permanence – things continue to exist even when they are no longer present to the senses 2. Preoperational (2-7 years) Use language, represent objects with words
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Stages of Cognitive Development
3. Concrete operational (7-12) Think logically Classifies objects by several features (size, color, shape) 4. Formal operational (12 & up) Become concerned with the hypothetical, the present, and the future
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Factors Affecting Learning
Meaningfulness Words or ideas that have personal meaning Transfer Learning new information, but being able to use it in real world situations Chemical Influence Stimulants – caffeine, soda, coffee – inc. brain chemicals and may allow for more rapid learning Depressants – alcohol – reduce nerve firing and the potential for learning
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Social or Observational Learning
Albert Bandura Direct experience Vicarious experience - observing
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Bandura’s Research Divided preschool children into 2 groups
One watched a film of an adult playing quietly with a doll The other watched a film of an adult playing aggressively with the doll Punching, kicking, throwing it around the room Later, when the children were allowed to play with toys, those who had seen the more aggressive film were more than twice as likely to act aggressively
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Processes in Observational Learning
Acquisition or modification of a behavior after at least one exposure to the behavior Attention Retention Motor Reproduction Processes Motivation
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Violence in the Media Observational Learning
Media violence can encourage violent behavior Children brought up in a home where there is no aggressive behavior or punishment are usually less likely to exhibit violent behaviors seen in the media.
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Current Approaches Individual differences in cognitive processes
The big picture Minor details Hands-on Think or reasoning
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Factors that Influence Learning
Emotions Advantageous to learning If emotions are overwhelming, little learning takes place Evolutionary Processes are inborn and are turned on by situations we face each day
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Factors the Influence Learning
Culture Values – learning depends on your family values Perceptual Processes – how do you perceive what you come into contact with Intelligence – varies among people
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