Omrod –Cognitive Views of Learning Chapter 7: Introduction to Cognition and Memory *This chapter marks a shift in the book – from roles of environmental conditions and observable behaviors Cognitive Processes Cognitive Processes: “how people perceive, interpret, remember, and in other ways think about environmental events” (p.149) I. History 1950-1960s: many psychologist became dissatisfied with “thoughtless approach” to human learning Major work started to emerge w distinct cognitive “flavor” (p.149) 1967:Ulric Neisser’s Cognitive Psychology published -landmark book -helped to legitimize cognitive theory as a major altner. to behaviorism Other well known early proponents- Jerome Bruner, David Ausubel, VERBAL LEARNING- research conducted in early/mid 20th century - tried to apply as a stimulus-response analysis to human learning, but later found that human language base learning was difficult to explain from behaviorist perspective. II. Edward Tolman’s Purposive Behavioralism (pg150-153) Tolman- prominent learning theorist His ideas included: 1)”Learning is an internal rather than external change” (p150) -learning is internal process, isn’t reflect in organism’s behavior - Ex. Study: 3 groups of rats ran a difficult maze under different reinforcement conditions- Group 1 rats- reinforced w.food, group 2- no reinforcement for success, and group 3-none during first 10 days, but started reinforcement on 11th day Results: Data number of wrong turns made – improved with group 2 and 3 over time, When group 3 started recieveing reinforcement performance equaled group 1 “Latent Learning”: unobservable learning Tolman believed “reinforcement influences performance rather than learning, in that it increases likelihood that a learned behavior will be exhibited” (P151) 2)”Behavior is Purposive”: - learning should be viewed on as a formation of S-R connections, but as a process of learning that certain events lead to other events -Purposive Behaviorism: once an organism learns that a behavior leads to an end result, organism behaves in order to achieve that end (in other words- “behavior has a purpose”/goal ) (p151) 3) “Expectations affect behavior” -“ Once organism learns that certain behaviors produce certain result, it begins to form expectations about the outcomes of it behaviors” (p.151) - Organism now expects the reinforcement that precedes it If “organisms expectations are not met, its behavior may be adversely affected” (p151) -Study: two groups of rats go through a maze, one gets sunflower seeds and one get bran (Rats like bran)- the rats with the bran go through maze faster, when these rats have reinforcement switched to sunflower seed (not as desired) they faster rats move even more slowly than the control group (p.152) 4) “Learning results in an organized body of information” - Rats in maze learn more than independent response- they learn way maze is arranged Cognitive Maps: learn where different parts of the environment are located in relation to one another. Knowing this enables organism to get to move from one place to another quickly and easily- sometimes called a mental map (p153) III. Gestalt Psychology Emphasized importance of organizational processes in perception, learning, and problem solving General idea: People organize the things they learn. (p.157) Believed people were “predisposed to organize info. in particular ways” (p153) Basic Ideas that emerged from Gestalt Psych: 1)”Perception is often different from reality” - the way an individual sees an experience is often different than the experience itself 2)”The whole is more than the sum of its parts” - cannot understand aspects of human experience when studied in isolation- need to be studied all together - Ex. Jingle bells0 is recognized by a particular sequence of musical notes, even when played in a different key, we still recognize those specific notes Transportation: importance of interrelationships among elements is shown in an experiment with chickens. Chickens are shown a black and gray piece of paper with grain placed on both sheets. Chickens only allowed to eat from the black sheet. When shown two sheets of paper later- chicken select black because through reinforcement learned something about the relationship between these pieces of paper. (p.153) 3) “An organism structures and organizes experience” (see figure 7.3 a and b for nice visual example of this on p.154, easier to explain through picture than words) 4)”The organism is predisposed to organize experiences in certain ways.” - Humans structure their experiences in predictable ways - Law of Proximity: “People tend to perceive as a unit those things that are close together in space.” Ex. Reading the letter sequence “ONEVERYHIGHWAY”is perceived differently based on how your group the words together- might be “One Very High Way” OR “On Every Highway” - Ex. See other visual examples with dot formations on P.154155 to further elaborate (they are helpful to see!) Law of Similarity: “People tend to perceive as a unit those things that are similar to one another” Ex. Visual Example of Dot formation p. 154 Law of Closure: “People tend to fill in missing pieces to form a complete picture” ex. “Singing in the Rain” Picture on pg.155 Law of Pragnanz: “Individuals always organize their experiences as simply, concisely, symmetrically, and completely as possible” (p.155) 5) “Learning follows the laws of Pragnanz” - Learning involved the formation of memory traces. - ex. Irregularly shaped objects – later remembered as circles or squares (p155-156) 6) “Problem solving involved restructuring and insight”: - believes problem solving involves mentally combining and recombining various elements of problem until a structure that solves the problem is achieved. IV. Verbal Learning Research -Central to verbal learning are two learning tasks: 1) Serial Learning: “involves learning a sequence of items in a particular order” ex. Alphabet, days of the week, planets in solar system - First item on list- is a stimulus to which the 2nd item is learned as a response - Second item, then serves as stimulus for the 3 item learned and so on. 2) Paired Associated Learning: “involves learning pairs of items” (p157) ex. Learning foreign language words and their English equivalents, learning state capitals - The first item in each pair is the stimulus, the second item is the response. Serial Learning Curve: “People learn the first few items and the last few items more quickly and easily than they learn the middle terms” (p157) Primacy effect: tendency for first items to be learned quickly Recency effect: tendency for last items to be learned quickly First and last items serve as “ANCHORS” to which other items can be attached. Overlearning: learn material to mastery and then practice it for additional study trials, enables you to remember info. much more accurately later (P 157) Distributive Practice: spreading study time over several occasion, leads to better learning Massed Practice: study time occurs all at once (I’d lovely call this “Cramming”) “Learning in one situation often affects learning and recall in other situations” (p.158) Retroactive Inhibition: “when people learned two sets of paired associates in succession, their learning of the second set often diminishes ability to recall first set” Proactive Inhibition: when individuals in above mentioned situation, often have difficulty remembering the 2nd set of information as well (p.159) Retroactive/Proactive Facilitation: under different circumstances, learning one set of info. might actually help improve the recall of info learned at another time- called retroactive or proactive depending on the order of the two sets of info. were learned. Ex. After learning the S-R response home- dragon, prob. would learn home- monster more easily. “Characteristics of the material affect the speed with which people can learn it” (p.159) - Items- learned more quickly when meaningful (when easily associated w other ideas) - Items are easy to learn and remember when they are pronounceable. - Concrete items (turtle, sandwich) are easier to remember than abstract items (truth, joy, experience) because concrete items can be “mental visualized” “People often impose meaning on new information.” (p.160) -People try to make info. meaningful to them when learning it. “People organize what they learn.” Free Recall: when people are allowed to recall info. in any order, they typically do not recall items in originally presented order- recall often reflects an organizational scheme of some kind “People use encoding strategies to help them learn” “People are more likely to learn general ideas than to learn words verbatim” (P 161) V. Introduction to Contemporary Cognitivism General Assumptions of Cognitive Theories: (Page 162) 1) “Some learning processes may be unique to humans. 2) Learning involves the formation of mental representations or associations that are not necessarily reflected in overt behavior changes. 3) People are actively involved in the learning process. 4) Knowledge is organized. 5) Objective, systematic observations of people’s behavior should be the focus of scientific inquiry, however inferences about unobservable mental processes can be drawn from behavior” Despite these common assumptions, cognitivists take different approaches in their attempts to portray how learning occurs. The predominate approach is the Information Processing Theory In recent years to other perspectives have arised, Constructivism and Contextual Theories Information Processing Theory (p163 -164) Focuses on “how people think about (ie process) the information they receive from the environment How they perceive the stimuli around them, how they put this into their memories, and how they find what they’ve learned when they need to use it Weakness: better at dissecting than at synthesis- has yet to combine various cognitive processes into integrated whole that explains overall how humans think and behave Constructivism (Emily’s Favorite! P. 164-165) We construct knowledge rather than directly acquiring it from the outside world Individual Constructivism: process of construction occurs individually within each learner Social Constructivism: people working together to construct their understanding Weaknesses: offers only vague explanations of process that underlies learning, taking the idea of learning control too far (aka teachers should not have influence over how students interpret subject matter), while students are in the “drivers seat”, teacher still needs to have the roadmap Contextual Theories (p. 165 -166) Suggests that “learners often think and perform more intelligently when they can draw on a variety of environmental support systems that enable them to make sense of new situations and help them tackle challenging tasks and problems. Contextual theories of learning have a variety of labels around them including- situated learning, situated cognition, distributed learning, and distributed intelligence Integrating Cognitive Perspectives: combined these 3 theories, as well as theories already considered in the book, provide us with a more complete understanding of how humans think and learn than any single approach can offer alone. VI. An Information Processing View of Human MEMORY LEARNING versus MEMORY (p 167-168) Learning: “acquisition of new information or skills”, “involves long term changes in mental representations or associations” Memory: “ability to recall previously acquired information Storage: “the process of ‘putting’ new information into your memory” Encoding: “modify the information as you store it in your memory, changing the formation of the info/simplifying the info my remembering the overall gist of it Retrieval: “process by which people find information they have previously stored so they can use it again” Dual- Store Model of Memory: (P 168-169) - claim that short term memory and long term memory are 2 distinctly different entities - information from the environment first enters a “sensory register” and is held there for a short time (a few seconds) – like junk mail you throw away - If processed in a particular way- moves to “short term memory”/”working memory” (held there for less than 1 min & must be processed further to move to long-term memory) – like bills you have to pay but then forget about them - If information is not processed sufficiently enough to transfer from short to long term- then it is assumed to be “lost” – like more important information you want to file away somewhere Sensory Register (P 169-170) Characteristics of Sensory Register: - Capacity: “unlimited” - Forms of storage: info. is stored in the same form in which it has been sensed ex. Visual input- stored visually, auditory input- stored auditory etc. - Duration: brief time, difficult to precisely measure amt of time - Studies indicate auditory input might last longer than visual input - Two factors for rapid disappearance of info: (1) interference- new info coming in replaces old (2)Decay- unnecessary simply fades away Moving Information to Working Memory (aka short term memory): The role of attention (p.170-176) -to move info from sensory register to working memory-must pay attention to it!! - Factors Influencing Attention: (p172-173) Motion: moving object more likely to capture attention than stationary ones SIZE: Larger objects attract more attention Intensity: Brighter colors or louder noises attract more attention Novelty: Things that are unusual in some way Incongruity: Objects that don’t make sense in context (ex. I took a walk to the rabbit this morning) Emotion: Stimuli that invoke a strong emotional reaction Personal Significance: meaning and relevance people find in an object or event Social cues: People more likely to pay attention to things they see other people looking at - Nature of Attention: (p.173-175) Cocktail Party Phenomenon: ability to attend to one spoken message while ignoring others (think- being at a crowded party, but still able to carry on conversation w one person despite other convos. going on around you) Shadowing: Technique used to study cocktail party phenomenon, person is asked to listen to 2 simultaneous messages through earphones and to repeat one of the messages- easier to do when two people have distinctly different speaking voices. - Attention as Limited Capacity (p175) -Figure- Ground: Individual can attend to 1 object (figure) and notice most of the details of the object - Ground: whatever the individual is NOT paying attention too, not carefully inspected - Other theorist propose that people can attend to one COMPLEX source of information at a time ex. You can carry on a conversation w a friend in your passenger seat, while driving the car. - Limited Processing Capacity: the # of stimuli being attended to depends on how much cognitive processing is required for each transmission. Working Memory (p176-182) (aka short term memory, but working memory is preferred term) -component of memory in which “thinking” occurs - identifies the information from the sensory register than warrants attention, saves the information for a longer period of time, and processes it further - may hold and processes info. it receives from the long-term memory Characteristics of Working Memory: (p177-179) - Capacity: very limited, can only from 5-9 units of info. in working memory at a time, the average being 7 units of info. Chunking: process of combined info. in some way, increases the amt. of info. that the limited space of working memory can hold. - Forms of Storage: regardless of way info. was received, most info in working memory is stored in auditory form - will this is most prominent way to store info, it can still be stored in visual, spatial, and tactile forms Phonological Loop: small amt of info. are kept fresh through constant repetition Visuospatial Sketchpad: allows manipulation &short term retention of visual Materials Episodic Buffer: “place” where information from multiple modalities can be integrated into an overall understanding of a particular situation - Duration: “somewhere between 5-20 seconds”, -some information stored in working memory will fade away, if not processed further Control Processes in Working Memory (P.180-182) -Three Processes affect the functioning of working memory: (1) Organization (2) Retrieval (3) Maintenance Rehearsal -Organization (p180) -Strategies to organize information: Chunking it into parts, making up a rhyme or melody, attach meaning to certain digit (when memorizing numbers) - When you attach meaning to something, you also facilitate its storage in long-term memory - Retrieval (p180-181) - usually easy and automatic - how quickly you can retrieve something depends on how much info. is stored there - “may sometimes be a process of scanning all of the contents for working memory, successively and exhaustively, until the desired information is found” (181) - Maintenance Rehearsal (p181) - “Repeating information to keep it alive in working memory” - Often takes the form of subvocal speech - when rehearsal isn’t possible, information disappear quickly from working memory - ex. When you try to remember a phone number, you repeat it over and over again in your head until you dial the number - There is a limit to how much info. people can store in working memory at one time through repetition - Word Length Affect: able to remember a greater number of short items than longer items - Observed more frequently in older children and adults- so to some degree it is a learned skill Moving Information to Long-Term Memory: Connecting New Information with Prior Knowledge (p182) - Storage of information in long-term memory is more complex. Further processing of info. is necessary to transfer information from working memory to long term memory Involves combined new info. with info. already stored in long-term memory “People store information in long-term memory most successfully, when they can relate it to information they already know” Working Memory: is the bottleneck, prevents most information from getting into long-term memory Process of memory storage occurs slowly and a great deal is lost Long Term Memory (P. 182-186) - Most complex component of human memory system Characteristics of Long-Term Memory (p 182-183) Declarative Knowledge: “knowledge of how thing are or were”, most of long-term memory is this knowledge Procedural Knowledge: “knowledge about ‘how to do things’, also stored in long-term memory Capacity: unlimited (as far as theorist can tell), the more information that is stored there, the easier it is to store additional info. Forms of storage: - knowledge is stored in all different forms- from sensory images, language based, nonverbal abstractions and meaning, general understanding about the world etc. - People often remember the “gist” of what they see and hear, along with idiosyncratic interpretation and minor or major distortions of reality - Explicit Knowledge: people can easily recall and explain it - Implicit Knowledge: (great deal of our memory), affects people’s behavior even though we cannot consciously retrieve and inspect it - Interconnectedness: “related pieces of information in long-term memory is probably directly or indirectly connected with every other piece” Duration: - Theorist disagree: - Some think once info. is stored in long-term memory it is there forever, the process of “forgetting” is a retrieval problem - Others believe- info. can disappear from long-term memory through a variety of forgetting processes- may or may not be depending on how info was initially stored and how often it is used - “best we can say is that long-term memory’s duration is indefinitely long” VII. Challenges to the Dual-Store (3 component) Model (P.183-184) Not all psychologists agree that the dual store model represents how human memory functions. Many have questioned the idea that working memory and long term memory are separate entities- argued that both components are actually different aspects of a single- storage mechanism In this section- will examine evidence related to these issues. 1) Are working memory and Long-Term Memory Really Different? (p184-185) - Some theorist believe that the serial learning curve can be explained as a “single-stored model” rather than a “dual stored model” - For concrete examples/studies see pg 184 2) Is Conscious Thought Necessary for Long-Term Memory? (p.185-186) - Working Memory, by definition, is “an active, conscious mechanism” - If describe in this way, one would say that a learner would have to be actively involved in storing virtually anything in long-term memory. - This is not always the case, some info. can be automatically stored - “Much of this seemingly ‘nonconsciously’ processed information becomes implicit knowledge” - “Quite possibly the human brain learns and stores information in long term memory- in at least two distinctively different ways” (1) is conscious way where working memory plays and active role (2) “thoughtless” ways that involves information of simple stimulusstimulus and stimulus-response associations - “Thinking itself may sometimes occur outside the confines of working memory” (p.186): people might describe these things as “intuition” or a “gut feeling” VIII. Alternative Views of Human Memory Level of Processing Model of Human Memory According to this model: - incoming information is processed by a central processor at many different levels of complexity - Central processor has limited capacity, information that is temporarily held there is what we are aware of at a given time - How long and how well info. is remember depends on how the central processor deals with it - Info. that isn’t processed at all leaves brief impression, only when info. undergoes “deep” processing- when its interpreted, understood, and related to previously learned info do we remember it for any length of time - Children process info in one of five ways: Labels, sentence generation, sentence repetition, “what” question, and “why” question (p187) - Intention to learn: important factor in this model, “people who intend to learn something are more likely to learn and remember it than people who do not specifically try to learn the information” - Incidental Learning: “when individuals process material deeply, they often learn it successfully even when they are not specifically trying to learn it, sometimes called non-intentional learning - Weaknesses to this approach include: the idea of “depth of processing” is too vague to define or measure, studies have shown the more often info is repeated the more better is can be remembered regardless of “deep processing” Activation Model of Human Memory According to this model: - working and long term memory are not separate entities, but “instead simply reflect different activation states of a single memory” - All info. stored in memory is either an active or inactive state - Info. that is currently active, include incoming information and information previously stored in memory, is the information that a learner is paying attention to and processing - When attention shifts, other pieces of info in memory become active and previously activated info gradually becomes inactive - Bulk of info. stored: is inactive, so we are not consciously aware of it - Priming: a phenomenon where activation of one thing, primes or activates a second item. IX. General Educational Implications of Cognitive Theories (p.190-192) “People control their own learning” – Students who aren’t mental active in the classroom- do not attend, think about or cognately process subject matter will learn very little, those who do attend- nature of cognitive process will determine how much they learn “Memory is selective” – Teachers and textbooks often load students with more information than any person can possibly remember, students must select some information and exclude other info, but do not always know how to best judge what material is most important, teachers must help students sort through essential and nonessential information. “Attention is essential for learning”- Helping students focus their attention is the first step in helping them learn, things teachers do in the classroom can make a big difference in the extent to which student pay attention to the topic at hand. Here are several effective strategies for capturing and holding attention: - Include variety in topic and presentation style: repetition can lead to boredom and reduced attention - Provide frequent breaks: especially when working w young children - Ask questions: frequent ?s helps to keep students attention and increase students learning of the content - Minimize distractions when indep. work is assigned: easier to focus when environment is quiet and subdued - Seat students near teacher if they have difficulty staying on task - Monitor students’ behaviors “People can only process a limited amount of information at a time”- getting information into long term memory is a slow process, teachers need to remember this when planning lessons and lectures- in choosing or creating instructional materials. When too much info is presented too fast, students will simply not be able to remember it all. “Limited capacity for working memory is not necessarily a bad thing”- working memory “bottleneck” forces learners to condense, organize, and synthesize information they receive X. SUMMARY “Cognitivism encompasses several perspectives – information processing theory, constructivism, and contextual views- that all contribute to our understanding of how human beings think and learn.” (p.192) Most prevalent views of human learning – dual-store model “Despite the differing perspectives on memory that currently exist, we can make several generalizations about memory that have implications for classroom practice. For instance what learners do on the ‘inside’ makes a huge difference in what they learn and how well they remember it, and teachers can do many things to nudge students towards effective cognitive processes” (p.193)