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Learning and Cognition Cognitive Information Processing b Unit 3 b Behaviorists Behaviorists insist that psychologists should study only observable, measurable behaviors-not mental processes b Methodological Behaviorists study only events that can be observed and measured : the environment and the individuals actions b In contrast Radical Behaviorists deny that internal events, like hunger, or fear, cause behavior b Cognitivists Concerned with mental processes b How people acquire, process, and use information b Pay attention to what goes on at the very moment of learning, not just the results of learning b Behaviorism Behaviorism: The study of observable patterns of behavior. Learning Theory: the study of our methods of learning, and how this learning then influences our behavior. Classical Conditioning Discovered by Ivan Pavlov when studying digestion and salivation in dogs. ◦ This theory applies to things that are already reflexive or innate behaviors. The Discovery: ◦ Morning routine: Enter room, turn on lights, feed dogs. ◦ Expected pattern: Lights go on, food goes down, dogs start drooling. ◦ Unexpected discovery: After a few weeks, the dogs began to drool when the lights came on! Classical Conditioning Operant Conditioning Developed by B.F. Skinner, who believed that Classical Conditioning was correct, but that behavior was not solely reflexive. Behavior is a learned response, based on the consequences of previous behaviors. Operant Conditioning Operant Conditioning Increasing or Decreasing a Behavior ◦ Reinforcement: A consequence that increases the likelihood that a behavior will be repeated. ◦ Punishment: A consequence that decreases the likelihood that a behavior will be repeated. Operant Conditioning Giving or Removing a Stimulus: ◦ Positive: Presenting/Giving/Introducing a new stimulus. ◦ Negative: Removing/Taking Away an existing stimulus. “Skinner Box” . Operant Conditioning Our scenario:Your teenage daughter just received her first car and was allowed to attend a social event alone, provided she was home by 10pm. ◦ Reinforcement: She was home at 9:45! ◦ Punishment: Little Missy strolled in at MIDNIGHT! Reinforcement Punishment Positive Extend curfew to 11pm next time. (GIVING time) Work Little Missy to death with added chores. (GIVING unpleasant tasks). Negative Take away curfew all together – she’s trust-worthy! (TAKE AWAY restriction) Take away her car until she learns. (TAKE AWAY valued object – the car!) Operant Conditioning The Schedule of Reinforcemen t can impact learning! Timing: ◦ Interval ◦ Ratio Schedule: ◦ Fixed ◦ Variable Operant Conditioning Extinction: Cessation of a behavior based on a lack of continued reinforcement, experience of a punishment, etc. Stimulus Discrimination Telling Things Apart: ◦ Generalization ◦ Discrimination ◦ Just Noticeable Difference Training: ◦ ◦ ◦ ◦ Shaping Chaining Omission Training Escape Learning aka Avoidance Learning Conditioned Taste Aversion Behavioral Principles Edward Thorndike’s Law of Effect: ◦ If a behavior has positive consequences, it is more likely to be repeated. ◦ If a behavior has negative consequences, it is less likely to be repeated. David Premack’s Premack Principle: ◦ An opportunity to engage in a behavior that is naturally seen frequently can serve as a reinforcement for a less frequent behavior. Latent Learning: ◦ The subject exhibits the desired behaviors and understands the patterns of the A-B-C model. Harlow’s Rhesus Monkeys Harry Harlow attempted to determine if physical comfort or food was more important to baby monkeys. Monkeys were given access to 2 artificial wire “mothers”. ◦ 1 had a bottle of milk ◦ 1 had a fleece cover •Babies preferred the fleece mother, and Harlow concluded that primates are comforted by warm, soft things, NOT food. Social Learning Theory Albert Bandura decided to study learning from a social perspective. Social Learning Theory states that we can learn just by watching others. ◦ We DO NOT have to experience the consequence ourselves! Social Learning Theory The BoBo Doll Study: ◦ Take groups of kids into a room and have them watch a video of a model punching/kicking/hitting a BoBo Doll. ◦ Children see 3 potential endings: Actor is Punished Actor is Rewarded Nothing happens, actor walks off-screen Social Learning Theory ◦ Children are given an opportunity to play with a BoBo doll. Those who saw a reward mimic behaviors right away Those who saw neutral mimic some behaviors. All, INCLUDING those who saw the punishment, can mimic behaviors if asked. Those who saw punishment were able to very closely, if not identically, mimic the video! Social Learning Theory Observational Learning: The ability to learn by watching the behaviors and consequences of others. Stages of Cognitive Development Theory was developed when Jean Piaget (a Biologist!) was helping to develop IQ tests and noticed that when children answered incorrectly, there was a PATTERN to the WAY they answered! Stages of Cognitive Development Age Infancy Stage Sensorimotor Stage Description •Child experiences the word through their sense. •“The Little Scientists” •Object Permanence: The ability to understand that objects continue to exist even when they are no longer visible. Stages of Cognitive Development Age 2 years old Stage Description Preoperational •Child can think symbolically (e.g. Stage thinking of the past and future, using language, playing pretend). •There is a large growth in vocabulary and use of words and symbols in this stage. •Children LACK operations (the ability to mentally manipulate objects). •Egocentric: Children in this stage cannot distinguish between their own perspective and the perspectives of others. Stages of Cognitive Development Age School aged Stage Description Concrete •Children can think logically and consistently Operational Stage about features in their world that are real and concrete. •Children are capable of abstract reasoning and performing operations as long as it is in terms of concrete objects. •EX: A > B, B > C, which is greater, A or C? – NO •EX: Adam is taller than Bill, Bill is taller than Charlie, who’s taller, Adam or Charlie? – YES! •The schema of conservation (i.e. knowing that changing the shape of things does not change the amount) is formed during this time. •Egocentrism begins to disappear. Stages of Cognitive Development Age Stage Description Adolescents Formal •Individuals are able to think on many different and Adults Operational Stage planes: •Hypothetically •Abstractly •Speculatively •Rationally •Deductive reasoning and learning to consider possibilities also occurs in this stage. Some Adults Post-Formal •Individuals are able to think on many different Operational Stage levels, building on formal operational thought. •Individuals are able to mentally manipulate even complex, abstract ideas. Other Cognitive Theories Zone of Proximal Development (ZPD) by Lev Vygotsky ◦ The difference between what a learner can do on their own, and with a little bit of guidance/help from an instructor. Scaffolding: The process of introducing new ideas with sufficient support so that the student can learn and achieve on a level they would not be capable of on their own. Other Cognitive Theories b Jean Piaget ◦ Learning is structured through the use of: Schemes (templates) Assimilation (adding on) Accommodation (changing schemes) Information Processing Model Information Processing Model: Your brain is like a computer! ◦ We move memories from… Sensory register to… 2-3 seconds Very limited capacity Short-Term Memory to… A couple minutes to a couple hours Capacity limited by Miller’s Magic Number (7 plus or minus 2) Long-Term Memory Indefinite storage Infinite capacity Information Processing Model Strategies for Encoding Memories •Rehearsal •Outlines •Hierarchies •Concept Trees •Mnemonics •Method of Loci: Visual Mnemonics •Self-questioning •Chunking •Elaboration •Cued Recall •Retrieval Cues •SPAR: Survey, Process, Ask, Review •Quiz Systems •Flash Cards Encoding Memories The Debate: ◦ Do we forget? ◦ Or do we forget where we put it? State-Dependent Memory aka Cued Recall Encoding Specificity Principle Forgetting vs. Failure to Retrieve Types of Memories Working Memory: Current thoughts Declarative Memory: Facts ◦ Semantic Memory: General knowledge ◦ Episodic Memory: Events Sensory Memory: Sensory recall ◦ Iconic Memory:Visual recognition ◦ Echoic Memory: Auditory recognition Procedural Memory: How-to ◦ AKA Kinesthetic Learning aka Proprioception Levels-of-Processing Principle Shallow Deep Serial-Order Effect Serial-Order Effect: The order in which we encounter information determines how well it will be stored. ◦ ◦ ◦ ◦ Primacy Effect Recency Effect Frequency Effect Familiarity Effect Memory Reconstruction Memory Reconstruction ◦ Hindsight Bias ◦ Repression ◦ Eye-Witness Effect Memory Loss Amnesia: Damage to the Hippocampus ◦ Anterograde Amnesia ◦ Retrograde Amnesia ◦ Explicit vs Implicit Memory Korsakoff ’s Syndrome: Damage to the Frontal Lobe due to prolonged alcoholism Memory Loss Alzheimer’s Disease: Damage to neural networks spreading from the Frontal Lobe toward the Brainstem. ◦ Neurolitic Plaque ◦ Neurofibulary Tangles Problem Solving Recognition: Identify the problem Algorithms: Step-by-step procedures Heuristics: “Short-cuts” that may solve a problem faster Cognition & Language Categorization Cognitive Maps Attention ◦ Preattentive Process ◦ Attentive Process ◦ Postattentive Process Selective Attention Pattern Recognition The Stroop Effect Linguistics Linguistics: The study of language ◦ Noam Chomsky’s Transformational Grammar: Deep-level logic moves to surface-level grammar & word order Linguistics Broca’s Area ◦ Broca’s Aphasia Wernicke’s Area ◦ Wernicke’s Aphasia Language Development Sounds: ◦ Phonemes: An individual sound ◦ Morpheme: A cluster of sounds with meaning Reading: ◦ Fixation ◦ Saccades Figuring Out Meaning: ◦ Syntactic Bootstrapping Language Development Pre-Linguistic: 0-12 Months Word Learning: 13 Months and up Syntatic Relations: 20 Months and up Discourse/Pragmatics: Elementary school years ◦ Irony, sarcasm, humor ◦ Perspective taking ◦ Social/interactional skill Language Development Over-generalization Under-generalization Linguistic Schema Development Intelligence IQ Scores continue to develop and increase throughout adulthood Types of Intelligence ◦ Fluid Intelligence = Abstract thought, memory, speed of thought, etc. Declines with age ◦ Crystallized Intelligence = Accumulated learning of facts, vocabulary, etc. Increases with age Intelligence Sternberg’s Types of Intelligence ◦ Analytical = problem solving ◦ Creative = artistic, musical, inventive, designing ◦ Practical = street smart, apply knowledge to everyday life Performance Novice Performance Expert Performance Shift from Novice to Expert requires deliberate practice! Special Needs Gifted and Talented: A term for children who show high levels of intellectual functioning, creativity, artistic talent, leadership quality, etc. ◦ No social, emotional, or physical difference from “normal” children. ◦ Typically are capable of abstract thought (Formal Operational Thinking in Piaget’s model) before “normal” children. Theories of Intelligence Robert Sternbger: Stated that there are 3 types of intelligence. ◦ Academic Intelligence: “Book learning” – the ability to memorize facts. ◦ Creative Intelligence: “Artistic Creativity” – the ability to play music, imagine art, paint, sculpt, etc. ◦ Practical Intelligence: “Street smarts” – the ability to problem-solve. Theories of Intelligence Howard Gardner: Stated there were at least 9 types of intelligence. Theories of Intelligence Intelligence Mental Retardation Normal Above Average Genius