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Cognition.

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Presentation on theme: "Cognition."— Presentation transcript:

1 cognition

2 Resources

3 Memory Any indication that learning has persisted over time Two Models
Three Box Model of Memory Information Processing Model

4 Three Box Model of Memory
Sensory Memory Some memory is lost because it is not encoded Short-Term Memory More Memory is lost because it is not encoded Long-Term Memory Some information is lost due to retrieval failure

5 Three Memory Processes
Encoding Storage Retrieval

6 Sensory Memory Split-second holding tank, holds info less than a second Demonstrated by George Sperling Flashed a grid of nine letters for 1/20th of a second, participants could recall either the top, middle, or bottom rows perfectly Tone (high, medium, or low) used as a cue as to what row to remember Entire grid is held in memory for a split second Q L M W P X T E V

7 Sensory Memory Iconic- visual Echoic-auditory (slightly longer- 3-4 seconds) Most of the information is never encoded- selective attention What we are attending to or what we consider to be important Cocktail party phenomenon

8 Short Term/Working Memory
Everything we are currently thinking about Fades in seconds Capacity- Magic Number 7 Limit can be expanded with Chunking (including mnemonic devices) Phone numbers Rehearsal- simple repetition

9 Long-Term Memory Permanent memory, unlimited capacity
Can decay or fade Episodic Memories of specific events Semantic General knowledge of the world, stored as facts, meanings, and categories Procedural Memories of skills and how to perform them; might be complicated to explain in words

10 Long-Term Memory Can also be:
Explicit (declarative)- conscious memories of facts or events we have actively remembered Implicit (nondeclarative)- unintentional memories we might not even realize we have Eidetic (photographic) memories- very rare!

11 Levels of Processing Alternate way to think about memory
Elaborately (Deeply) Processed- will likely to be remembered later, more time spent studying Maintenance (Shallowly) Processed- will be forgotten quickly (cramming) Explains why we remember stories better than simple repetition

12 Retrieval Recognition- matching a current event or fact with one already in memory (multiple choice test) Recall- retrieving a memory with an external cue

13 Retrieval Primacy-recency effect/ serial position effect- more likely to remember the first and the last items on a list Semantic network theory- our brain forms new memories by connecting them to memories already present

14 Retrieval Flashbulb memories- encode the context of an effect
Mood congruent memory recall better when mood is the same

15 Elements of language Phonemes- smallest units of sound in a language (English-44) Ph, sh, a, l Morpheme- smallest units of meaningful sound Ing, -s, anti- Syntax- specific order in which words are written and spoken Each language has its own syntax

16 Retrieval State-dependent memory- more likely to remember when in same state of consciousness Alcohol and Drugs Constructive memories- may report false details that never occurred Elizabeth Loftus Leading questions can easily influence us

17 Forgetting Relearning effect- relearning forgotten information is quicker the second time around languages Proactive interference- learning new information interferes when recalling old information Retroactive interference- older information learned previously interferes with the recall of information learned more recently

18 Language Acquisition Beginning at 3 to 4 months
Babbling Stage- Beginning at 3 to 4 months Spontaneously utters various sounds at first unrelated to the household language One-Word Stage from about age 1 to 2 speaks mostly in single words Sometimes called holophrastic Two-Word Stage- beginning about age 2 speaks mostly two-word statements Telegraphic Speech early speech stage in which the child speaks like a telegram – “go car” uses mostly nouns and verbs and omitting “auxiliary” words Also overgeneralizes

19 Language Acquisition Skinner- Operant Conditioning
Association, imitation, and reinforcement Noam Chomsky- Inborn Universal Grammar Language Acquisition Device Acquire grammar and language without being taught Over-generalizing Linguistic Relativity Whorfs hypothesis that language determines the way we think Supported by few studies- labeling has more of an impact

20 Describing Thoughts Concept Prototype Image
mental grouping of similar objects, events, or people Address- country, city, street, house Prototype the best example of a category matching new items to the prototype provides a quick and easy method for including items in a category (as when comparing feathered creatures to a prototypical bird, such as a robin.) Image Mental picture we create in our minds of the outside world

21 Problem solving Algorithm Heuristic
methodical, logical rule or procedure that guarantees solving a particular problem Heuristic rule-of-thumb strategy that often allows us to make judgments and solve problems efficiently usually speedier than algorithms more error-prone than algorithms sometimes we’re unaware of using heuristics

22 Problem solving Availability Heuristic- Representativeness Heuristic-
judging a situation based on examples of similar situations that come to mind initially Representativeness Heuristic- judging a situation based on how similar aspects are to prototypes the person holds in his or her mind A young person is more likely to commit suicide An old person is more likely to be a poor driver

23 Problem solving Overconfidence Belief Bias Belief Perseverance
tendency to be more confident than correct Belief Bias the tendency for one’s preexisting beliefs to distort logical reasoning Belief Perseverance clinging to one’s initial conceptions after the basis on which they were formed has been discredited

24 Problem Solving Framing Functional Fixedness Confirmation Bias
tendency to think of things only in terms of their usual functions Confirmation Bias tendency to search for information that confirms one’s preconceptions Framing the way an issue is posed

25 Practice questions 1) Mr. Krohn, a carpenter is frustrated because he misplaced is hammer and needs to pound in the last nail in the bookcase he is building. He overlooks the fact that he could huse the tennis trophy sitting above the workbench to pound in the nail. Which concept best explains why Mr. Krohn overlooked the trophy? Representativeness heuristic Retrieval Functional fixedness Belief bias Divergent thinking

26 2)Which of the following is an example of the use of the representativeness heuristic?
A) Judging that a young person is more likely to be the instigator of an argument than an older person, because you believe that younger people are more likely to start fights Breaking a math story problem down into smaller, representative parts, in order to solve it Judging a situation by a rule that is usually, but not always, true Solving a problem with a rule that guarantees the right, more representative answer Making a judgment according to past experiences that are most easily recalled, therefore representative of experience

27 3) Which sentence most accurately describes sensory memory?
Sensory memory stores all memory input perfectly accurately for a short period of time Sensory memory encodes only sensations we are attending to at the time Sensory memory records all incoming sensations and remembers them indefinitely Sensory memory receives memories from the working memory and decides which memories to encode in long-term memory Sensory memory records some sensations accurately, but some are recorded incorrectly, leading to constructive memory

28 4) Which of the following would be the best piece of evidence for the nativist theory of language acquisition? A child who acquires language at an extremely early age through intense instruction by his/her parents Statistical evidence that children in one culture learn language faster than children in another culture A child of normal mental ability not being able to learn language due to language deprivation at an early age A child skipping the babbling and telegraphic speech stages of language acquisition A child deprived of language at an early age successfully learning language later

29 5) Recall is more difficult than recognition because
Memories retrieved by recognition are held in working memory, and recalled memories are in long-term memory Memories retrieved by recognition are more deeply processed The process of recall involves cues to the memory that causes interference Memories retrieved by recognition are more recent than memories retrieved be recall The process of recognition involves matching a person, event, or object with something already in memory


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