AP PSYCH UNIT 2 PART 1

selective attention

focusing conscious awareness on a particular stimulus.

inattentional blindness

failing to see visible objects when our attention is directed elsewhere.

change blindness

failing to notice changes in the environment; a form of inattentional blindness.

perceptual set

a mental predisposition to perceive one thing and not another.

gestalt

an organized whole. Gestalt psychologists emphasized our tendency to integrate pieces of information into meaningful wholes.

figure-ground

the organization of the visual field into objects (the figures) that stand out from their surroundings (the ground).

grouping

the perceptual tendency to organize stimuli into coherent groups.

depth perception

the ability to see objects in three dimensions, although the images that strike the retina are two-dimensional; allows us to judge distance.

visual cliff

a laboratory device for testing depth perception in infants and young animals.

binocular cue

a depth cue, such as retinal disparity, that depends on the use of two eyes.

convergence

a cue to nearby objects’ distance, enabled by the brain combining retinal images.

retinal disparity

a binocular cue for perceiving depth. By comparing retinal images from the two eyes, the brain computes distance — the greater the disparity (difference) between the two images, the closer the object.

monocular cue

a depth cue, such as interposition or linear perspective, available to either eye alone.

stroboscopic movement

an illusion of continuous movement (as in a motion picture) experienced when viewing a rapid series of slightly varying still images.

phi phenomenon

an illusion of movement created when two or more adjacent lights blink on and off in quick succession.

autokinetic effect

the illusory movement of a still spot of light in a dark room.

perceptual constancy

perceiving objects as unchanging (having consistent color, brightness, shape, and size) even as illumination and retinal images change.

color constancy

perceiving familiar objects as having consistent color, even if changing illumination alters the wavelengths reflected by the object.

perceptual adaptation

the ability to adjust to changed sensory input, including an artificially displaced or even inverted visual field.

cognition

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

metacognition

cognition about our cognition; keeping track of and evaluating our mental processes.

concept

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

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 crow).

schema

a concept or framework that organizes and interprets information.

assimilation

interpreting our new experiences in terms of our existing schemas.

accommodation (in developmental psychology)

in developmental psychology, adapting our current schemas (understandings) to incorporate new information.

creativity

the ability to produce new and valuable ideas.

convergent thinking

narrowing the available problem solutions to determine the single best solution.

divergent thinking

expanding the number of possible problem solutions; creative thinking that diverges in different directions.

executive functions

cognitive skills that work together, enabling us to generate, organize, plan, and implement goal-directed behavior.

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.

heuristic

a simple thinking strategy—a mental shortcut — that often allows us to make judgments and solve problems efficiently; usually speedier but also more error-prone than an algorithm.

insight

a sudden realization of a problem’s solution; contrasts with strategy-based solutions.

confirmation bias

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

fixation

in cognition, the inability to see a problem from a new perspective; an obstacle 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 events in terms of how well they seem to represent, or match, particular prototypes; may lead us to ignore other relevant information.

availability heuristic

judging 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

the persistence of one’s initial conceptions even 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.

nudge

framing choices in a way that encourages people to make beneficial decisions.

memory

persistence of learning over time through the encoding, 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 identifies items previously learned, as on a multiple-choice test.

relearning

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

encoding

the process of getting 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

processing multiple aspects of a stimulus or problem simultaneously.

sensory memory

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

short-term memory

briefly activated memory of a few items (such as digits of a phone number while calling) that is later stored or forgotten.

long-term memory

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

working memory

a newer understanding of short-term memory; conscious, active processing of both (1) incoming sensory information and (2) information retrieved from long-term memory.

central executive

a memory component that coordinates the activities of the phonological loop and visuospatial sketchpad.

phonological loop

a memory component that briefly holds auditory information.

visuospatial sketchpad

a memory component that briefly holds information about objects’ appearance and location in space.

neurogenesis

the formation of new neurons.

long-term potentiation (LTP)

an increase in a nerve cell’s firing potential after brief, rapid stimulation; a neural basis for learning and memory.

explicit memory

retention of facts and experiences that we can consciously know and “declare.” (Also called declarative memory.)

effortful processing

encoding that requires attention and conscious effort.

automatic processing

unconscious encoding of incidental information, such as space, time, and frequency, and of familiar or well-learned information, such as sounds, smells, and word meanings.

implicit memory

retention of learned skills or classically conditioned associations independent of conscious recollection. (Also called nondeclarative 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 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. Also referred to as a retrieval practice effect or test-enhanced learning.

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.