* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Insight Learning
Operant conditioning wikipedia , lookup
Behaviorism wikipedia , lookup
Educational psychology wikipedia , lookup
Cognitive science wikipedia , lookup
Cognitive development wikipedia , lookup
Learning theory (education) wikipedia , lookup
Psychological behaviorism wikipedia , lookup
How Does Cognitive Psychology Explain Learning? According to cognitive psychology, some forms of learning must be explained as changes in mental processes, rather than as changes in behavior alone Copyright © Allyn & Bacon 2007 How Does Cognitive Psychology Explain Learning? • Insight Learning – Problem solving occurs by means of a sudden reorganization of perceptions.. suddenly perceiving familiar objects in new forms or relationships • Cognitive Maps – A mental representation of physical space Copyright © Allyn & Bacon 2007 Wolfgang Köhler and Insight Learning • Example: chimp stacks crates to reach food • This is a form of cognitive learning • Behaviorism has no convincing stimulus-response explanation for Kohler’s demonstration. Copyright © Allyn & Bacon 2007 • Köhler observed the manner in which chimpanzees solve problems, such as that of retrieving bananas when positioned out of reach. • He found that they stacked wooden crates to use as makeshift ladders, in order to retrieve the food. • Köhler concluded that the chimps had not arrived at these methods through trialand-error (which Thorndike had claimed to be the basis of all animal learning, through his law of effect) • Rather they had experienced an insight (also known as an “aha experience”), in which, having realized the answer, they then proceeded to carry it out in a way that was “purposeful.” Copyright © Allyn & Bacon 2007 Edward Tolman’s Cognitive Map • Organisms learn the spatial layout of their environments by exploration, even if they are not reinforced for exploring • (Evolutionary perspective: Animals forging for food) Copyright © Allyn & Bacon 2007 Edward Tolman’s Cognitive Map • Argued that is was a cognitive map that accounted for a rat quickly selecting an alternative route in a maze when the preferred path was blocked • Challenged the work of Pavlov, Watson, and Skinner • Claimed learning was mental, not behavioral. Copyright © Allyn & Bacon 2007 Examples of Cognitive Maps • Giving directions • Walking through your house in the dark Copyright © Allyn & Bacon 2007 Observational Learning: Bandura’s Challenge to Behaviorism • A form of cognitive learning • We learn by watching others’ behavior and the consequences of their behavior • Albert Bandura: Proposed that rewards can be effective if we merely see someone else get them Copyright © Allyn & Bacon 2007 Observational Learning • Accounts for such things as the rapid spread of clothing fashions and slang expressions Copyright © Allyn & Bacon 2007 Bandura’ Bobo Doll Experiment 1961 • Bandura found that the children exposed to the aggressive model were more likely to act in physically aggressive ways than those who were not exposed to the aggressive model. Copyright © Allyn & Bacon 2007 The Bobo Doll Experiment Video Albert Bandura Copyright © Allyn & Bacon 2007 Children See, Children Do Copyright © Allyn & Bacon 2007 Recent Cognitive Psychologists Findings Kamin Rescorla • Expanded on this concept and demonstrated that a CS - R • Has shown that the connection only occurs if the most critical feature of CS contains unique a CS is its value in predicting when the US information about the UCS will occur – EX: Taste aversion- a certain flavor/smell could server as a warning for illness – When presents with multiple possible CS, a subject will only become conditioned to the one that provided the best info • EX: Flu=eat Taco Bell food or smells become the CS • CS is not the Taco Bell sign, the colors blue, pink, and purple, bells, Copyright © Allyn & Bacon 2007 fountain drink stations, etc… Summary Reinforcement changes not only the behavior but also the individual’s expectations for future rewards and punishments in similar situations . Reinforcement changes expectations and behavior Copyright © Allyn & Bacon 2007 Brain Mechanisms and Learning Long-term Potentiation • Biological process involving the strengthening of synapses in groups of nerve cells; believed to be the neural basis of learning • Dopamine a “reward neurotransmitter” is released in mammals w/ Operant Conditioning. Continuous Reinforcement of behavior releases dopamine, which brings pleasure and strengthens the neural pathway associated with that behavior, making a LASTING behavior Copyright © Allyn & Bacon 2007 Are There Two Learning Circuits?? • Simple ‘mindless’ learning, like learning to ride a bike • More complex learning that requires conscious processing: concept formation, insight learning, observational learning, memory of specific events. Copyright © Allyn & Bacon 2007 End of Chapter 6 Copyright © Allyn & Bacon 2007