MEMORY You think it’s good? Well, you’re wrong.

advertisement

MEMORY

You think it’s good? Well, you’re wrong.

ENCODING

 DEF: forming a memory code

 Requires attention : focusing awareness on a narrowed range of stimuli or events

 Attention is selective; acts as a filter

LEVELS OF PROCESSING

 Craik and Lockhart (1972) propose incoming info can be processed at different levels

 3 levels for verbal info.:

 1: Structural encoding : shallow processing that emphasizes the physical structure of the stimulus

LEVELS OF PROCESSING CONTINUED

 Phonemic encoding : emphasizes what a word sounds like

 Semantic encoding : emphasizes meaning of verbal input; thinking about the objects and actions the word represents

 Levels of Processing Theory : deeper levels of processing result in longer lasting memory codes

ENRICHING ENCODING

 Elaboration : linking a stimulus to other info at the time of encoding

 Helps enhance semantic encoding

 Involves thinking of examples to illustrate the idea

VISUAL IMAGERY

 Creating visual images to represent words to be remembered

 Allan Paivio: easier to form images for concrete words

 Dual-coding theory : holds that memory is enhanced by forming semantic and visual codes, since either can lead to recall

SELF-REFERENT ENCODING

 DEF: deciding how or whether info is personally relevant

 It is easier to remember something if it is meaningful to you

STORAGE: MAINTAINING

INFORMATION IN

MEMORY

Storage is maintaining info in memory over time

SENSORY MEMORY

 DEF: preserves info in its original sensory form for a brief time, usually only a fraction of a second

 Gives additional time to recognize stimulus

 Visual and auditory memory trace decays after ¼ of a second

SHORT-TERM MEMORY

 STM is a limited-capacity store that can maintain unrehearsed info for up to 20 seconds

 Rehearsal : process of repetitively verbalizing or thinking about the info

DURABILITY OF STORAGE

 Ability to recall decays considerably after only 15 seconds

 This is due to time-related decay and interference from competing stimuli

CAPACITY OF STORAGE

 1956: George Miller publishes “Magical Number 7” paper

 Claims you can store 7 items (+ or – 2) in STM

 You can increase capacity by Chunking : grouping familiar stimuli and storing as a single unit

STM AS “WORKING MEMORY”

 Alan Baddeley: “Working memory” consists of 3 parts:

 1: Phonological rehearsal loop (ex: reciting a phone #)—only 2 seconds of info

 2: Visuospatial sketchpad : allows to temporarily hold and manipulate visual images

 3: Executive control system : handles info as you engage in reasoning and decision making

LONG-TERM MEMORY

 DEF: an unlimited (virtually) capacity store that can hold info over lengthy periods of time

LONG-TERM MEMORY PERMANENT?

 Flash-bulb memories : unusually vivid and detailed recollections of momentous events

 Hypnosis induced memories

 ESB triggering long-lost memories

STM AND LTM SEPARATE

 Dominant thought today is that STM is a tiny and constantly changing portion of LTM

HOW IS KNOWLEDGE

REPRESENTED AND

ORGANIZED IN

MEMORY?

CLUSTERING AND CONCEPTUAL

HIERARCHIES

 Clustering : tendency to remember similar or related items in a group

 Conceptual hierarchy : multilevel classification system based on common properties among items

SCHEMAS

 Schema : an organized cluster of knowledge about a particular object or event abstracted from previous experience with the object or event

SCRIPTS

 Script : organizes what people know about common activities

 A kind of schema

SEMANTIC NETWORKS

 DEF: consists of nodes representing concepts, joined together by pathways that link related concepts

 Spreading activation : naturally thinking of related words

CONNECTIONIST NETWORKS AND

PARALLEL DISTRIBUTED PROCESSING

(PDP)

 PDP models assume that cognitive processes depend on patterns of activation in highly interconnected computational networks that resemble neural networks

 PDP models assert that specific memories correspond to particular patterns of activation in these networks

RETRIEVAL: GETTING

INFORMATION OUT OF

MEMORY

TIP-OF-THE-TONGUE PHENOMENON

 DEF: temporary inability to remember something you know, accompanied by the feeling that it’s just out of reach

 Similar memories are interfering

REINSTATING THE CONTEXT OF AN EVENT

 Context cues facilitate the retrieval of info.

 Remembering the origin of the thought

RECONSTRUCTING MEMORIES AND

MISINFORMATION EFFECT

 Distortions in recall occur b/c subjects reconstruct a story to fit w/ their established schemas

 Theories: overwriting, interference, and…

SOURCE-MONITORING

 Def: process of making attributions about the original memories

 Source-monitoring error : when a memory derived from a source is misattributed to another source

 Reality monitoring : process of deciding whether memories are based on external or internal sources

Download