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memory
the persistence of learning over time through the encoding, storage, and retrieval of information
recognition
a measure of memory in which the person identifies items previously learned, as on a multiple-choice test
encoding
the process of getting information into the memory system - for example, by extracting meaning
retrieval
the process of getting information out of memory storage
sensory memory
the immediate, very brief recording of sensory information in the memory system
long-term memory
the relatively permanent and limitless storehouse of the memory system. Includes knowledge, skills, and experiences
explicit memory
retention of facts and experiences that one can consciously know and “declare” (also called declarative memory)
automatic processing
unconscious encoding of incidental information, such as space, time, and frequency, and of well-learned information, such as word meanings
iconic memory
a momentary sensory memory of visual stimuli; a picture-image memory lasting no more than a few tenths of a second
chunking
organizing items into familiar, manageable units; often occurs automatically
spacing effect
the tendency for distributed study or practice to yield better long-term retention than is achieved through massed study or practice
shallow processing
encoding on a basic level, based on the structure of appearance of words
semantic memory
explicit memory of facts and general knowledge; one of our two conscious memory systems (the other is episodic memory)
hippocampus
a neural center located in the limbic system; helps process for storage explicit (conscious) memories of facts and events
flashbulb memory
a clear, sustained memory of an emotionally significant moment or event
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
anterograde amnesia
an inability to form new memories
proactive interference
the forward-acting disruptive effect of older learning on the recall of new information
repression
in psychoanalytic theory, the basic defense mechanism that banishes from consciousness anxiety-arousing thoughts, feelings, and memories
misinformation effect
occurs when misleading information has distorted one’s memory of an event
deja vu
that eerie sense that “I’ve experienced this before.” Cues from the current situation may unconsciously trigger retrieval of an earlier experience
concept
a mental grouping of similar objects, events, ideas, or people
creativity
the ability to produce new and valuable ideas
divergent thinking
expanding the number of possible problem solutions; creative thinking that diverges in different directions
heuristic
a simple thinking strategy that often allows us to make judgments and solve problems efficiently; usually speedier but also more errorprone than an algorithm
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
representativeness heuristic
estimating the likelihood of events in terms of how well they seem to represent, or match, particular prototypes; may lead us to ignore other relevant information
overconfidence
the tendency to be more confident than correct—to overestimate the accuracy of our beliefs and judgments
framing
clinging to one’s initial conceptions after the basis on which they were formed has been discredited
phoneme
in a language, the smallest distinctive sound unit
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
one-word stage
the stage in speech development, from about age 1 to 2, during which a child speaks mostly in single words
telegraphic speech
early speech stage in which a child speaks like a telegram—“go car”—using mostly nouns and verbs
broca’s area
helps control language expression—an area of the frontal lobe, usually in the left hemisphere, that directs the muscle movements involved in speech
linguistic determinism
the strong form of Whorf’s hypothesis—that language controls the way we think and interpret the world around us
recall
a measure of memory in which the person must retrieve information learned earlier, as on a fill-in-the-blank test
relearning
a measure of memory that assesses the amount of time saved when learning material again
storage
the process of retaining encoded information over time
parallel processing
processing many aspects of a problem simultaneously; the brain’s natural mode of information processing for many functions
short-term memory
activated memory that holds a few items briefly, such as digits of a phone number while calling, before the information is stored or forgotten
working memory
a newer understanding of short-term memory that adds conscious, active processing of incoming auditory and visual information, and of information retrieved from long-term memory
effortful processing
encoding that requires attention and conscious effort
implicit memory
retention of learned skills or classically conditioned associations independent of conscious recollection. (also called nondeclarative memory)
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
mnemonics
memory aids, especially those techniques that use vivid imagery and organizational devices
testing effect
enhanced memory after retrieving, rather than simply rereading, information. also sometimes referred to as a retrieval practice effect or test-enhanced learning
deep processing
encoding semantically, based on the meaning of the words; tends to yield the best retention
episodic memory
explicit memory of personally experienced events; one of our two conscious memory systems (the other is semantic memory)
memory consolidation
the neural storage of long-term memory
long-term potentiation (LTP)
an increase in a cell’s firing potential after brief, rapid stimulation; a neural basis for learning and memory
encoding specificity principle
the idea that cues and contexts specific to a particular memory will be most effective in helping us recall it
serial position effect
our tendency to recall best the last (recency effect) and first (primacy effect) items in a list
retrograde amnesia
an inability to retrieve information from one’s past
retroactive interference
the backward-acting disruptive effect of newer learning on the recall of old information
reconsolidation
a process in which previously stored memories, when retrieved, are potentially altered before being stored again
source amnesia
faulty memory for how, when, or where information was learned or imagined. (Also called source misattribution.) Source amnesia, along with the misinformation effect, is at the heart of many false memories
cognition
all the mental activities associated with thinking, knowing, remembering, and communicating
prototype
a mental image or best example of a category. Matching new items to a prototype provides a quick and easy method for sorting items into categories (as when comparing feathered creatures to a prototypical bird, such as a robin)
convergent thinking
narrowing the available problem solutions to determine the single best solution
algorithm
a methodical, logical rule or procedure that guarantees solving a particular problem. Contrasts with the usually speedier—but also more error-prone—use of heuristics
insight
a sudden realization of a problem’s solution; contrasts with strategy-based solutions
fixation
(1) in cognition, the inability to see a problem from a new perspective; an obstacle to problem solving. (2) in personality theory, according to Freud, a lingering focus of pleasure-seeking energies at an earlier psychosexual stage, in which conflicts were unresolved
intuition
an effortless, immediate, automatic feeling or thought, as contrasted with explicit, conscious reasoning
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
belief perseverance
clinging to one’s initial conceptions after the basis on which they were formed has been discredited
language
our spoken, written, or signed words and the ways we combine them to communicate meaning
morpheme
in a language, the smallest unit that carries meaning; may be a word or a part of a word (such as a prefix)
babbling stage
beginning around 4 months, the stage of speech development in which an infant spontaneously utters various sounds at first unrelated to the household language
two-word stage
the stage in speech development, from about age 1 to 2, during which a child speaks mostly in single words
aphasia
impairment of language, usually caused by left hemisphere damage either to Broca’s area (impairing speaking) or to Wernicke’s area (impairing understanding)
wernicke’s area
a brain area involved in language comprehension and expression; usually in the left temporal lobe
linguistic influence
the weaker form of “linguistic relativity”—the idea that language affects thought (thus our thinking and world view is “relative to” our cultural language)
intelligence
the ability to learn from experience, solve problems, and use knowledge to adapt to new situations
general intelligence
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 level of performance typically associated with children of a certain chronological age. Thus, a child who does as well as an average 8-year-old is said to have a mental age of 8
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 × 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 and its companion versions for children are the most widely used intelligence tests; they contain verbal and performance (nonverbal) subtests
standardization
defining uniform testing procedures and meaningful scores by comparison with the performance of a pretested group
reliability
the extent to which a test yields consistent results, as assessed by the consistency of scores on two halves of the test, on alternative forms of the test, or on retesting
normal curve
(normal distribution) a symmetrical, bell-shaped curve that describes the distribution of many types of data; most scores fall near the mean (about 68 percent fall within one standard deviation of it) and fewer and fewer near the extremes
validity
the extent to which a test or experiment 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. (Also called criterion-related validity)
cohort
a group of people sharing a common characteristic, such as from a given time period
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 with age, especially during late adulthood
cross-sectional study
longitudinal study
intellectual disability
a condition of limited mental ability, indicated by an intelligence test score of 70 or below and difficulty adapting to the demands of life. (Formerly referred to as mental retardation.)
down syndrome
a condition of mild to severe intellectual disability and associated physical disorders caused by an extra copy of chromosome 21