Unit 5: Cognitive Psychology

memory

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

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 assesses the amount of time saved when learning material for a second time

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.

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 of learned skills or classically conditioned associations independent of conscious recollection

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 effect

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

testing effect

enhanced memory after retrieving, rather than simply rereading, information

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

semantic memory

explicit memory of facts and general knowledge; one of our two conscious memory systems

episodic memory

explicit memory of personally experienced events; one of our two conscious memory systems

hippocampus

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

memory consolidation

the neural storage of a long-term memory

flashbulb memory

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

long-term potentiation (LTP)

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

priming

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

encoding specificity principle

the idea that cues and contexts specific to a particular memory will be most effective in helping us recall it

mood-congruent memory

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

serial position effect

our tendency to recall best the last and first items in a list

anterograde amnesia

an inability to form new memories

retrograde amnesia

an inability to retrieve information from one's past

proactive interference

the forward-acting disruptive effect of prior learning on the recall of new information

retroactive interference

the backward-acting disruptive effect of new learning on the recall of old information

repression

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

reconsolidation

a process in which previously stored memories, when retrieved, are potentially altered before being stored again

misinformation effect

occurs when misleading information is incorporated into one's memory after an event

source amnesia

faulty memory for how, when, or where information was learned 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.

cognition

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

concept

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

prototype

a mental image or best example of a category

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)

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 realization of a problem's solution

confirmation bias

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

fixation

the inability to see a problem from a new perspective; an impediment to problem solving

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.

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; semantics is the language's set of rules for deriving meaning from sounds, and syntax is its set of rules for combining words into grammatically, sensible sentences

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

the strong form of Whorf's hypothesis- that language controls the way we think and interpret the world around us

linguistic influence

the idea that language affects thought

intelligence

the ability to learn from experience, solve problems, and use knowledge to adapt to new situations

general intelligence factor (g)

according to Spearman and others, underlies all mental abilities and is therefore measured by every task on an intelligence test

factor analysis

a statistical procedure that identifies clusters of related items (called factors) on a test; used to identify different dimensions of performance that underlie a person's total score.

savant syndrome

a condition in which a person otherwise limited in mental ability has an exceptional specific skill, such as in computation or drawing

grit

passion and perseverance in the pursuit of long-term goals

emotional intelligence

the ability to perceive, understand, manage, and use emotions

intelligence test

a method for assessing an individual's mental aptitudes and comparing them with those of others, using numerical scores

achievement test

a test designed to assess what a person has learned

aptitude test

a test designed to predict a person's future performance; aptitude is the capacity to learn

mental age

a measure of intelligence test performance devised by Binet; the chronological age that most typically corresponds to a given level of performance

Stanford-Binet

the widely used American revision (by Terman at Stanford University) of Binet's original intelligence test.

intelligence quotient (IQ)

defined originally as the ratio of mental age (ma) to chronological age (ca) multiplied by 100 [thus, IQ = (ma/ca) x 100]. On contemporary intelligence tests, the average performance for a given age is assigned a score of 100.

Wechsler Adult Intelligence Scale (WAIS)

the WAIS is the most widely used intelligence test; contains verbal and performance (nonverbal) subtests

standardization

defining uniform testing procedures and meaningful scores by comparison with the performance of a pretested group

normal curve

the symmetrical bell-shaped curve that describes the distribution of many physical and psychological attributes. Most scores fall near the average, and fewer and fewer scores lie near the extremes.

reliability

the extent to which a test yields consistent results, as assessed by the consistency of scores on two halves of the test, on alternate forms of the test, or on retesting

validity

the extent to which a test measures or predicts what it is supposed to

content validity

the extent to which a test samples the behavior that is of interest

predictive validity

The success with which a test predicts the behavior it is designed to predict; it is assessed by computing the correlation between test scores and the criterion behavior.

cohort

A population group unified by a specific common characteristic, such as age, and subsequently treated as a statistical unit.

crystallized intelligence

our accumulated knowledge and verbal skills; tends to increase with age

fluid intelligence

our ability to reason speedily and abstractly; tends to decrease during late adulthood

cross-sectional study

a study in which people of different ages are compared with one another

longitudinal study

research in which the same people are restudied and retested over a long period

intellectual disability

a condition of limited mental ability, indicated by an intelligence score of 70 or below and difficulty in adapting to the demands of life; varies from mild to profound

Down Syndrome

a condition of mild to severe intellectual disability and associated physical disorders caused by an extra copy of chromosome 21

heritability

The proportion of variation among individuals that we can attribute to genes. The heritability of a trait may vary, depending on the range of populations and environments studied.

stereotype threat

a self-confirming concern that one will be evaluated based on a negative stereotype