Name Date Period IB Psychology Cognitive Perspective Outline Chapter 7: Thinking and Reasoning I. The Elements of Cognition (all the mental activities associated with thinking, knowing, and remembering information) a. Concept: a mental category that groups objects, relations, activities, abstractions, or qualities having common properties (eg. Dog) i. Basic concepts: concepts that have a moderate number of instances and that are easier to acquire than those having few or many instances (eg. working dog class) ii. Prototypes: a representative example of a concept (ex. Husky) iii. Propositions: a unit of meaning that is made up of concepts and expresses a single idea iv. Mental images: a mental representation that mirrors or represents a particular concept of aspect of the world b. How Conscious is Thought? i. Freud’s Model of Mental Structure (1933) Conscious (Ego) Preconscious/Subconscious (Superego) Unconscious (Id) Nonconscious 1. Subconscious processes: outside of consciousness, but is accessible when necessary 2. Nonconscious processes: occurs outside of consciousness, and is not available to conscious awareness 1 II. III. Reasoning and Creativity (the drawing of conclusions or inferences observations, facts, or assumptions) a. Formal reasoning (algorithm: step-by-step procedure for solving a problem; guarantees a solution) i. Deductive reasoning: drawing conclusions from a set of premises ii. Inductive reasoning: the conclusion probably follows from the premises but could conceivably be false b. Informal reasoning (there may be no one correct solution) i. Heuristic: a rule of thumb that guides problem solving, but can be error-prone ii. Dialectical reasoning: when opposing facts/ideas are weighted and compared with a view to determine the best solution or to resolve differences c. Creative thinking i. Mental set: a tendency to solve problems using procedures that worked before on similar problems ii. Convergent thinking: following a set of steps that will converge on one correct solution iii. Divergent thinking: exploring unconventional alternatives in solving problems 1. Personality traits associated with creative thinking (environment and personality traits interact to increase creative thinking) a. Nonconformity (not concerned about what others think of them) b. Curiosity (intrigued by what other people would ignore) c. Persistence (Thomas Edison: “Genius is 1/10 inspiration, 9/10 perspiration”) The Development of Thought and Reasoning a. How Children Think (Piaget, 1929/1960, 1952, 1984) (Research: The Development of Object Concept….) i. Key Concepts of Cognitive Development STAGE Sensorimotor AGE RANGE 0-2 years MAJOR CHARACTERISTICS 1. All knowledge is acquired through senses and movement 2. Thinking is at the same speed as physical movement 2 Preoperational 2-7 years Concrete operations 7-11 years Formal operations 11 and up 3. Object permanence develops 1. Thinking separates from movement and increases greatly in speed 2. Ability to think in symbols 3. Non-logical, “magical” thinking 4. Animism: all objects have thoughts and feelings 5. Egocentric thinking 1. Logical thinking develops 2. Conservation of liquid, area, volume 3. Ability to infer what others may be feeling or thinking 1. Logical thinking extends to hypothetical and abstract concepts 2. Ability to reason using metaphors and analogies 3. Ability to explore values, beliefs, philosophies 4. Ability to think about past and future 5. Not everyone uses formal operations to the same degree, and some not at all ii. Challenges to Piaget’s Theory 1. Stage transitions are not clear-cut or as widespread as implied 2. Children can understand more than credited for 3. Preschoolers are not as egocentric as Piaget implied 4. Theory of Mind: a system of beliefs about the way your own mind and other people’s minds work, and 3 IV. of how people are affected by their beliefs and feelings; it emerges at age 4 or 5 b. How Adults Think (King and Kitchner, 1990/94) i. Stages of reflective thought and judgment 1. Prereflective stages (1-2) (assume that a correct answer always exists and that it can be obtained directly through the senses) 2. Quasi-reflective (3-5) (people will recognize that some things cannot be known with absolute certainty, but they are not sure how to deal with these situations) 3. Reflective judgment (6-7) (people who understand that although some things may never be known with certainty, some judgments are more valid than others because of their coherence, their fit with the evidence, their usefulness, and so on) Barriers to Reasoning Rationally a. Hindsight bias: the tendency to overestimate one’s ability to have predicted an event once the outcome is known; the “I knew it all along” phenomenon) i. Framing: the way an alternative is worded will have an effect on your decision b. Aversion to loss: people are biased to try to avoid or minimize risk or losses when they make decisions c. Belief bias (tendency for preexisting beliefs to distort logic, eg. buy lottery tickets, disaster insurance) i. Availability heuristic: the tendency to judge the probability of a type of event by how easy it is to think if examples or instances ii. Representativeness heuristic: judging the likelihood of things in terms of how well they seem to represent, or match, particular prototypes; may lead one to ignore some relevant information d. Confirmation bias (the tendency to search for information that confirms one’s preconceptions) e. Need for cognitive consistency i. Cognitive Dissonance Theory (Festinger, 1957) people will resist or rationalize information that conflicts with their existing ideas, eg. smoking 1. Situations motivating reduction of dissonance a. Justifying a decision that was freely made b. When actions violate self-concept 4 V. c. Justification of effort (the tendency of individuals to increase their liking for something that they have worked hard to attain) 2. Limitations of cognitive dissonance theory a. Some cultures do not have a strong need for consistency b. Security to own up to mistakes c. Cognitive consistency can lead to self-defeating decisions and actions f. Overcoming Cognitive Biases i. Societal implications (legal system, medicine, government) ii. Expertise gives us a basis iii. When we can understand a bias, we can work to eliminate it Animal Minds a. Animal intelligence i. Cognitive ethology: the study of cognitive processes in nonhuman animals b. Animal language i. Qualifications for a language (Hockett, 1960) 1. Combinations of sounds, gestures, and symbols that are meaningful 2. Must permit displacement (communication about objects and events that are not present here and now but are displaced in time) 3. Must have grammar (syntax) that permits productivity (the ability to produce and comprehend an infinite number of new utterances) ii. Animal communication 1. Gestures, body postures, facial expressions, vocalizations and odors 2. Understanding human language a. Kohler (Sultan): problem solving with thought and insight b. Savage-Rumbaugh (Kanzi): keyboard symbols c. Gardner & Gardner (Washoe): d. Patterson (Koko): GSL 3. Thinking about the thinking of animals a. Anthropomorphism: the tendency to falsely attribute human qualities to nonhuman beings i. Clever Hans (Pfungst, 1911/1965 5 VI. b. Anthropocentrism: the tendency to think, mistakenly, that human beings have nothing in common with other animals What makes us uniquely human? a. We are the only species that tries to understand its own misunderstandings Chapter 8: Memory I. II. III. Approaches to the Study of Memory a. Hermann Ebbinghaus (1879) i. Reductionist approach ii. Nonsense syllables iii. Mathematical laws b. James Bartlett (1932) i. Memory for realistic stimuli (distortion of memory for stories) ii. Schemas c. Cognitive psychology (more influenced by Bartlett’s approach) i. Cognitive revolution in psychology ii. Analogy between mind and computer 1. encoding 2. storage 3. retrieval Memory: Our capacity to register, store, and recover information over time a. 5 concepts i. attention ii. motivation iii. rehearsal iv. state of consciousness v. interference Models of Memory a. 3 premises i. input is encoded ii. information is stored for a period of time iii. information is retrieved upon demand b. Filter Theory (Donald Broadbent) (unimportant information is dropped and relevant information is encoded unto the next stage) c. Levels of Processing Model (Craik and Lockhart) (How well we remember depends on how we process the information when it is being encoded) 6 i. Shallow processing: we assign no relevance to the information (waiting for a car to pass before crossing the street) 1. Semantic encoding: emphasizes the importance of verbal input ii. Deep processing: when we attach meaning to information 1. Elaboration: we attach meaning to the information when we create associations between new memory and existing memory 2. Self-referent encoding: best way to facilitate later recall, by relating new information to ourselves d. Three-Stage Model of Memory (Atkinson-Shiffrin) Sensory Input Sensory Memory Short-Term Memory Long-Term Memory e. Sensory memory (the information is present here just long enough to be perceived) i. Iconic memory (visual; lasts less than 1 second) ii. Echoic memory (auditory; lasts 4 seconds) f. The Nature of Attention i. Selective attention: focusing of awareness on a specific stimulus in sensory memory ii. Automatic processing: unconscious encoding of information about space, time, and frequency that occurs without interfering with other things we are thinking about iii. Parallel processing: natural mode of information processing that involves several information streams simultaneously iv. Effortful processing: encoding that requires our attention and conscious effort g. Short-Term Memory i. Capacity: 7 2 bits of unrelated information (Miller, 1956) 1. Increasing capacity a. Rehearsal (verbal, visual, spatial) 7 b. Chunking (grouping bits of information together into meaningful units (ss#, phne number, acronyms) ii. Working Memory Model (Baddeley) (an active 3-part memory temporarily hold information) 1. Phonological loop (stores information about linguistic sounds with an acoustic code from sensory memory and a rehearsal function that lets us repeat words in a loop (conversation) 2. Visuospatial loop (briefly stores visual and spatial information from sensory memory) 3. Central executive (actively integrates information from the phonological loop and visuospatial working memory, and longterm memory as we associate old and new information, solve problems, and perform other cognitive tasks) iii. Long-Term Memory (relatively permanent and unlimited capacity memory system) 1. Organization of Long-Term Memory Types of Long-Term Memories Explicit Memory (with conscious recall) Semantic Memory (general knowledge) Implicit Memory (without conscious recall) Episodic Memory (personal experiences) Procedural Memory Conditioning Effects 2. Heirarchical systems: in which concepts are arranged from more general to more specific classes a. Concepts: mental representations of related things 8 i. Superordinate concepts: clusters of concepts ii. Subordinate concepts: instances of basic concepts iii. Prototypes: typical examples of a concept 3. Semantic networks: irregular distorted systems unlike strict hierarchies, with multiple links from one concept to another a. Schema: preexisting mental frameworks for an event i. Script: a schema for an event IV. V. Retrieval a. Recognition: identification of something as familiar such as multiple choice and matching questions on a test b. Recall: retrieval of information from LTM in the absence of any other information or cues such as for an essay question or fill-inthe-blank c. Reconstruction: retrieval that can be distorted by adding, dropping, or changing details to complete a picture from incomplete stored information d. Serial-position effect: better recall for information that comes at the beginning (primacy) and at the end (recency) of a list of words. e. Context-dependent memory: physical setting in which a person learns information is encoded along with the information and becomes part of the memory trace f. Mood congruence: tendency to recall experiences that are consistent with one’s current good or bad mood g. State-dependent memory: tendency to recall information better when in the same internal state as when the information was encoded Retrieval Cues (a stimulus that provides a trigger to get an item out of memory) a. Priming: activating specific associations in memory wither consciously or unconsciously b. Distributed practice: spreading out the learning of skills over several sessions; typically produces better retrieval than massed practice c. Massed practice: cramming the learning of skills into one session d. Mneumonic devices: memory tricks or strategies to make information easier to remember (ROYGBIV, SOH CAH TOA, PEMDAS, etc) 9 VI. VII. VIII. e. Method of Loci: uses visualization with familiar objects on a path to recall information on a list f. Peg-Word mneumonic: uses association of terms to be remembered with a memorized scheme (one is bun, two is shoe…) Retrieval Distortion a. Reconstruction: retrieval that can be distorted by adding, dropping, or changing details to complete a picture from incomplete stored information i. Case studies 1. The effects of leading questions on memory (Loftus) 2. Lost-in-the-mall study b. Confabulation: process of combining and substituting memories from events other than the ones you are trying to remember c. Misinformation effect: incorporation of misleading information into memories of a given event Forgetting (the inability to retrieve previously stored information. Forgetting results from failure to encode, decay of stored memories, or inability to access stored information) a. Ebbinghaus Forgetting Curve b. Tip-of-the-tongue phenomenon: the temporary inability to access information accompanied by the feeling that the information in in LTM c. Interference: learning some items prevents retrieving others, especially when the information is similar i. Proactive interference: old memories prevent the retrieval of newer memories 1. A-B A-C A-B ii. Retroactive interference: new memories prevent the retrieval of older memories 1. A-B A-C A-C Explanations for forgetting 10 IX. X. a. Karl Lashley (memories physically deteriorate; memories do not reside in a single spot) i. Removal of rat cortex b. Sigmund Freud i. Repression: the tendency to forget unpleasant traumatic memories; hidden in the unconscious mind 1. Hypnosis: access the unconscious to retrieve repressed memories c. Elizabeth Loftus (eyewitness memory; found that it was inaccurate, fluid, malleable) i. Confabulation: process of combining and substituting memories from events other than the one you’re trying to remember ii. The power of suggestion 1. Eyewitness accounts (car crash) 2. Children’s testimony (Ceci) iii. Misinformation effect: incorporation of misleading information into memories of a given event iv. Misattribution error (source amnesia): forgetting the source if information of a given event Memory and the Brain a. Connectionism Theory (memory is stored throughout the brain in connections between neurons, many of which work together to process a single memory) b. Brain Structures Involved in Memory i. Thalamus: encoding of memory into STM ii. Cortex: involved in our declarative memory in STM iii. Hippocampus: our ability to transfer declarative memory from STM to LTM iv. Cortex: involved with declarative memory from past in LTM v. Amygdala: our ability to associate memories with emotions vi. Limbic system: involved in explicit LTM vii. Cerebellum: involved in implicit memory of skills Cognitive Disorders a. Distinction between declarative and procedural memory i. Retrograde amnesia: problems remembering events before and incident ii. Antereograde amnesia: problems remembering events after the incident 1. Hippocampus/amygdale (Clive Wearing) 2. No memory for objects/puzzles, and yet improved performance for puzzles (Squire) 11 XI. iii. Alzheimer’s disease: when the neural connections physically deteriorate, resulting in irreversible loss in memory and eventually all mental functioning Artificial Intelligence a. Parallel Processing Model: emphasizes the simultaneous processing of information, which occurs automatically and without our awareness, to create neural network based on neuron-like systems, rather than artificially contrived computer codes; they can learn, adapt, and deal with incomplete information b. Role of Neuroscientists i. Long-term potentiation: increasing the efficiency of a neural network by sending across the synapses within neural networks of long-term memories ii. Flashbulb memories: a vivid memory of an emotionally arousing event Evaluating the Cognitive Perspective I. II. Contributions of this perspective a. Innovative methods for exploring the “Black box” of the mind b. An understanding of how cognition affects behavior and emotion c. Findings of tremendous social and legal relevance d. Understanding and improving mental abilities from infancy to old age Misuses and Misinterpretations of this Perspective a. Cognitive reductionism b. Errors of cause and effect c. Cognitive relativism 12