Unit 7 Psychology

Cognition

Memory

the persistence of learning over time through the storage and retrieval of information

Encoding

the processing of information into the memory system—for example, by extracting meaning.

storage

the process of retaining encoded information over time

Retrieval

the process of getting information out of memory storage

parallel processing

the processing of many aspects of a problem simultaneously; the brain's natural mode of information processing for many functions, including vision. Contrasts with the step-by-step (serial) processing of most computers and of conscious problem solving.

sensory memory

the immediate, very brief recording of sensory information in the memory system

short-term memory

activated memory that holds a few items briefly, such as the seven digits of a phone number while dialing, before the information is stored or forgotten

long-term memory

the relatively permanent and limitless storehouse of the memory system. Includes knowledge, skills, and experiences.

working memory

a newer understanding of short-term memory that focuses on conscious, active processing of incoming auditory and visual-spatial information, and of information retrieved from long-term memory

explicit memory

memory of facts and experiences that one can consciously know and "declare"

effortful processing

encoding that requires attention and conscious effort

automatic processing

unconscious encoding of incidental information, such as space, time, and frequency, and of well-learned information, such as word meanings

implicit memory

retention independent of conscious recollection. (Also called procedural memory.)

iconic memory

a momentary sensory memory of visual stimuli; a photographic or picture-image memory lasting no more than a few tenths of a second

echoic memory

a momentary sensory memory of auditory stimuli; if attention is elsewhere, sounds and words can still be recalled within 3 or 4 seconds

chunking

organizing items into familiar, manageable units; often occurs automatically

mnemonics

memory aids, especially those techniques that use vivid imagery and organizational devices

spacing effects

the tendency for distributed study or practice to yield better long-term retention than is achieved through massed study or practice

testing effect

Enhanced performance on a memory test caused by being tested on the material to be remembered.

shallow processing

encoding on a basic level based on the structure or appearance of words

deep processing

encoding semantically, based on the meaning of the words; tends to yield the best retention

Hippocampus

A neural center located in the limbic system that helps process explicit memories for storage.

flashbulb memory

A clear and vivid long-term memory of an especially meaningful and emotional event.

long-term potentiation (LTP)

an increase in a synapse's firing potential after brief, rapid stimulation. Believed to be a neural basis for learning and memory.

Recall

A measure of memory in which the person must retrieve information learned earlier, as on a fill-in-the-blank test.

recognition

a measure of memory in which the person need only identify items previously learned, as on a multiple-choice test

relearning

a measure of memory that asses the amount of time saved when learning material again

Priming

the activation, often unconsciously, of certain associations, thus predisposing one's perception, memory, or response

mood-congruent memory

the tendency to recall experiences that are consistent with one's current good or bad mood

context dependent memory

The theory that information learned in a particular situation or place is better remembered when in that same situation or place.

serial position effect

our tendency to recall best the last (a recency effect) and first items (a primacy effect) in a list

cognition

all the mental activities associated with thinking, knowing, remembering, and communicating

concept

a mental grouping of similar objects, events, ideas, or people

creativity

the ability to produce novel and valuable ideas

convergent thinking

narrows the available problem solutions to determine the single best solution

divergent thinking

expands the number of possible problem solutions (creative thinking that diverges in different directions)

anterograde amnesia

an inability to form new memories

retrograde amnesia

an inability to retrieve information from one's past

Repression

in psychoanalytic theory, the basic defense mechanism that banishes from consciousness anxiety-arousing thoughts, feelings, and memories

proactive interference

the disruptive effect of prior learning on the recall of new information

retroactive interference

the disruptive effect of new learning on the recall of old information

misinformation effect

incorporating misleading information into one's memory of an event

source amnesia

attributing to the wrong source an event we have experienced, heard about, read about, or imagined

deja vu

that eerie sense that "I've experienced this before." Cues from the current situation may subconsciously trigger retrieval of an earlier experience.

Algorithm

A methodical, logical rule or procedure that guarantees solving a particular problem.

heuristic

a simple thinking strategy that often allows us to make judgments and solve problems efficiently; usually speedier but also more error-prone than algorithms

insight

a sudden and often novel realization of the solution to a problem

confirmation bias

a tendency to search for information that supports our preconceptions and to ignore or distort contradictory evidence

mental set

a tendency to approach a problem in one particular way, often a way that has been successful in the past

intuition

an effortless, immediate, automatic feeling or thought, as contrasted with explicit, conscious reasoning

representativeness heuristic

judging the likelihood of things in terms of how well they seem to represent, or match, particular prototypes; may lead us to ignore other relevant information

availability heuristic

estimating the likelihood of events based on their availability in memory; if instances come readily to mind (perhaps because of their vividness), we presume such events are common

Overconfidence

the tendency to be more confident than correct—to overestimate the accuracy of our beliefs and judgments.

belief perseverance

clinging to one's initial conceptions after the basis on which they were formed has been discredited

Framing

the way an issue is posed; how an issue is framed can significantly affect decisions and judgments.

language

our spoken, written, or signed words and the ways we combine them to communicate meaning

phoneme

in language, the smallest distinctive sound unit

Morpheme

in a language, the smallest unit that carries meaning; may be a word or a part of a word (such as a prefix)

grammar

in a language, a system of rules that enables us to communicate with and understand others

Syntax

The arrangement of words and phrases to create well-formed sentences in a language.

semantics

the set of rules by which we derive meaning from morphemes, words, and sentences in a given language; also, the study of meaning

babbling stage

beginning at about 4 months, the stage of speech development in which the infant spontaneously utters various sounds at first unrelated to the household language

one-word stage

the stage in speech development, from about age 1 to 2, during which a child speaks mostly in single words

two-word stage

beginning about age 2, the stage in speech development during which a child speaks mostly two-word statements

telegraphic speech

early speech stage in which a child speaks like a telegram—"go car"—using mostly nouns and verbs.

aphasia

impairment of language, usually caused by left hemisphere damage either to Broca's area (impairing speaking) or to Wernicke's area (impairing understanding).

Broca's area

Controls language expression - an area of the frontal lobe, usually in the left hemisphere, that directs the muscle movements involved in speech.

Wernicke's area

controls language reception - a brain area involved in language comprehension and expression; usually in the left temporal lobe

linguistic determinism

Whorf's hypothesis that language determines the way we think