Comprehensive Psychology Review: Learning, Perception, Attention, Methodology, and Foundations

Vocabulary practice flashcards covering learning and conditioning paradigms, temporal processing and timing models, attentional systems and disorders, sensory systems and psychophysics, research methodology and statistics, as well as the historical schools and branches of psychology.

Classical Conditioning

A learning process in which an organism reacts to a previously irrelevant stimulus because it has learned that the stimulus is systematically associated with and predictive of a relevant stimulus.

Unconditioned Stimulus (US)

A stimulus that naturally and automatically elicits a specific innate response irrespective of any prior conditioning, such as food producing salivation.

Unconditioned Response (UR)

The unlearned, innate physiological or behavioral reaction elicited directly by an unconditioned stimulus, such as salivating in response to food.

Conditioned Stimulus (CS)

A previously neutral stimulus that comes to elicit a conditioned response after being repeatedly and systematically associated with an unconditioned stimulus.

Conditioned Response (CR)

A learned response elicited by a conditioned stimulus following conditioning, which is practically identical in form to the unconditioned response.

Stimulus Generalization

The tendency to exhibit a conditioned response not only to the specific conditioned stimulus but also to other visually or perceptually similar stimuli.

Operant Conditioning

A learning paradigm where an organism operates in the environment and learns to perform actions that lead to rewards or suppress actions that lead to aversive outcomes or punishments.

Law of Effect

The principle formulated by Edward Thorndike stating that behaviors followed by positive consequences increase in probability of repetition, whereas behaviors followed by negative consequences decrease in probability.

Positive Reinforcement

A behavioral consequence that increases the likelihood of a behavior being repeated through the addition of an appetitive stimulus.

Negative Reinforcement

A behavioral consequence that increases the likelihood of a behavior being repeated through the removal or elimination of an aversive stimulus.

Positive Punishment

A consequence that decreases the probability of a behavior being repeated through the addition or administration of an unpleasant stimulus.

Negative Punishment

A consequence that decreases the probability of a behavior being repeated through the removal or withdrawal of a pleasant or appetitive stimulus.

Extinction

The gradual fading and disappearance of a learned behavior when the conditioned stimulus is no longer paired with the unconditioned stimulus or when reinforcement is discontinued.

Secondary Reinforcement

A reinforcer that possesses no intrinsic appetitive value on its own but acquires reinforcing power by being systematically associated with primary reinforcers through classical conditioning.

Shaping

An operant conditioning procedure developed by B.F. Skinner in which target behavior is established by reinforcing successive approximations that become progressively closer to the desired response.

Fixed Ratio Schedule

A partial reinforcement schedule where a behavior is reinforced only after it has been performed an exact, predetermined number of times ($n$).

Variable Ratio Schedule

A partial reinforcement schedule where reinforcement is delivered after an unpredictable, varying number of responses (averaging to $n$), producing the highest response rates and strongest resistance to extinction.

Blocking

The failure of a second neutral stimulus to become conditioned when it is presented simultaneously with an established conditioned stimulus that already reliably predicts the unconditioned stimulus.

Taste Aversion Conditioning

A specialized form of conditioning where an organism develops a strong avoidance of a specific flavor after only a single pairing with illness or nausea, serving a crucial survival function.

Quantitative Law of Effect

The mathematical principle stating that the likelihood of choosing a behavior ($B_1$) is directly proportional to its reinforcement ($R_1$) and inversely proportional to the sum of all alternative reinforcements available in that environment.

Latent Learning

Learning that occurs spontaneously in the absence of explicit reinforcement and remains hidden until reinforcement is introduced to motivate overt performance.

Cognitive Map

An internal mental representation of the spatial layout, configuration, and environment acquired through exploration without direct reinforcement, as demonstrated by Edward Tolman's maze studies.

Modeling

Learning that occurs through observing and imitating the actions of others, which relies on four cognitive components: attentional, retention, production, and motivational processes.

Vicarious Reinforcement

An increase in an observer's motivation to imitate a model's behavior resulting from seeing that model receive positive reinforcement for the action.

Language Acquisition Device (LAD)

An innate, biologically determined module in the human mind proposed by Noam Chomsky that incorporates universal grammar and enables generativity in language acquisition.

Learning by Insight

The sudden realization of the solution to a complex problem without incremental trial-and-error, achieved via cognitive restructuring of the elements within the problematic situation.

Circadian Timing

A biological timing system tracking roughly $24\text{-hour}$ cycles that governs bodily rhythms like sleep-wake and hormone cycles, controlled by the suprachiasmatic nucleus of the hypothalamus.

Interval Timing

An amodal biological timing mechanism covering durations from approximately $1\text{ second}$ to hours, supported by corticostriatal circuits in the basal ganglia and dopamine neurons via coincidence detection and synaptic plasticity.

Millisecond Timing

The neural timing system dedicated to sub-second durations necessary for motor control, speech, and musical coordination, primarily mediated by intrinsic properties of the cerebellum.

Retrospective Timing

A duration judgment required only after an interval has ended without prior warning, relying heavily on memory retrieval and reconstruction of the events that occurred during that period.

Prospective Timing

A timing process occurring when an individual is aware in advance that duration will be judged, directing attention directly toward the passage of time.

Internal Clock Model

A cognitive model of temporal processing consisting of a clock stage (pacemaker, switch, accumulator), a memory stage (working memory and reference memory), and a decision stage (comparison).

Attentional-Gate Model

A model of time perception postulating an attentional gate between the pacemaker and accumulator; paying more attention to time opens the gate to let more pulses through, making time feel longer.

Time Perspective

The automatic, often non-conscious cognitive bias through which considerations of past, present, and future events influence an individual's current behavioral choices and decisions.

Balanced Time Perspective

An optimal temporal orientation characterized by high past-positive, moderately high future, moderate present-hedonistic, and low past-negative and present-fatalistic scores, maximizing well-being.

Monochronic Time (M-Time)

A cultural approach to time characterized by completing one task at a time in a linear, sequential fashion, emphasizing strict adherence to schedules and clock time.

Polychronic Time (P-Time)

A cultural time orientation characterized by multitasking, flexible scheduling, and prioritizing ongoing social activities and interpersonal relationships over rigid deadlines.

Attention Taxonomy

A hierarchical structural framework dividing attention into two primary operational dimensions: Selectivity (divided and focused attention) and Intensity (alertness and sustained attention/vigilance).

Early Selection Model

Donald Broadbent's filter model positing that incoming sensory inputs are filtered based purely on physical characteristics prior to semantic analysis, allowing only the attended message through to higher-level processing.

Attenuation Theory

Anne Treisman's intermediate selection model proposing that unattended messages are not completely blocked but weakened (attenuated), and can still reach awareness if their activation threshold in the dictionary unit is sufficiently low.

Late Selection Model

A model of selective attention proposing that all incoming auditory messages are processed for semantic meaning before the filter selects which information reaches conscious awareness.

Overt Attention

The process of consciously shifting attention by physically orienting the sensory receptors, such as moving the eyes so an object falls directly onto the fovea.

Covert Attention

The allocation of visual attention to a specific peripheral location or stimulus without any accompanying physical eye movement.

Change Blindness

The failure to detect substantial visual changes in a scene or conversational partner across a brief interruption, demonstrating that looking does not guarantee conscious seeing.

Vigilance

A specialized form of sustained attention requiring an observer to monitor an environment over prolonged periods for the occurrence of rare, unpredictable, and difficult-to-detect target signals under monotonous conditions.

Switch Cost

The measurable reduction in response speed and accuracy that occurs when a person must alternate between two different cognitive tasks or operational rules compared to repeating the same task.

Supervisory Attentional System (SAS)

Norman and Shallice's executive mechanism located in the prefrontal cortex that oversees conscious, deliberate action planning and modulates or constructs schemas when dealing with novel, non-routine situations.

Stroop Effect

The cognitive interference and delay in reaction time that occurs when naming the ink color of a printed word because the word's semantic meaning conflicts with its physical font color.

Global Precedence Effect

The perceptual phenomenon observed in Navon figure tasks where observers process and identify the overall global configuration of an object faster than its local constituent features.

Simon Effect

A conflict-resolution phenomenon where reaction times are faster and more accurate when a stimulus appears on the same spatial side as the required response button, even when stimulus location is task-irrelevant.

Unilateral Spatial Neglect

A neurological syndrome typically following right inferior parietal lobe damage where a patient fails to report, respond, or orient to stimuli located in the contralesional (usually left) side of space.

Egocentric Neglect

A form of spatial neglect in which the patient fails to attend to stimuli located on the contralesional side relative to their own body's midline.

Allocentric Neglect

A form of spatial neglect in which the patient ignores the contralesional half of individual objects regardless of where those objects are positioned within the visual field.

Anosognosia

A severe metacognitive deficit caused by brain pathology characterized by an individual's complete lack of awareness or denial of their own neurological or physical impairments.

Sensation

The physical process wherein specialized sensory receptor organs detect external environmental stimuli and convert raw physical energy into biological signals.

Perception

The psychological process that organizes, synthesizes, and interprets incoming sensory information, translating electrical impulses into meaningful experiences of environmental events.

Transduction

The biological process in which sensory receptors convert physical energy from external stimuli (such as photons or acoustic pressure waves) into electrical neural impulses.

Absolute Threshold

The minimum physical intensity of a stimulus required for a sensory modality to detect its presence at least $50\%$ of the time.

Just Noticeable Difference (JND)

The minimum difference in physical magnitude between two stimuli required for an observer to distinguish between them; also known as the difference threshold.

Sensory Adaptation

A reduction in sensitivity of sensory receptors that occurs when a stimulus remains constant, unchanging, and repetitive over time.

Bottom-Up Processing

A data-driven, reductionist perceptual approach proposed by James Gibson asserting that perception begins with raw sensory inputs and proceeds directly to analysis without requiring prior learning or hypotheses.

Top-Down Processing

A holistic perceptual approach formulated by Richard Gregory stating that perception is driven by expectations, previous knowledge, and contextual cues that generate hypotheses to interpret ambiguous sensory data.

Weber-Fechner Law

The psychophysical principle stating that the just noticeable difference between stimuli is a constant fraction of the original stimulus intensity: $\text{Weber Fraction} = \frac{\text{Just Noticeable Difference}}{\text{Original Stimulus Intensity}}$.

Waveform Characteristics

The physical attributes of waves including amplitude (the height from peak to trough indicating wave intensity) and wavelength (the distance between successive peaks inversely related to frequency).

Signal Detection Theory (SDT)

A psychophysical framework for decision-making under uncertainty that separates an observer's true sensory sensitivity (discriminating signal from noise) from their decision criterion (response bias).

Method of Constant Stimuli

A psychophysical measurement method where a predetermined set of stimuli of varying intensities are presented in random order multiple times to establish an accurate, unbiased detection threshold.

Method of Limits

A psychophysical method where stimulus intensity is systematically increased (ascending series) or decreased (descending series) in discrete steps until the participant reports a change in detection.

Method of Adjustment

A classical psychophysical procedure allowing the observer to continuously manipulate and adjust the stimulus intensity themselves until it matches a target or reaches the detection threshold.

Staircase Procedures

An adaptive psychophysical method where stimulus intensity is systematically lowered after detection and raised after non-detection, converging efficiently on threshold reversal points.

Retinal Architecture

The multi-layered cellular organization of the retina through which light travels past ganglion cells and bipolar cells before triggering photopigments within the photoreceptors (rods and cones).

Rods

Photoreceptor cells highly concentrated outside the fovea that mediate peripheral vision and visual perception in dim light conditions (scotopic vision).

Cones

Photoreceptor cells densely concentrated in the fovea that provide high visual acuity, fine detail discrimination, and color vision under well-lit conditions.

Fovea

The small central region of the retina packed with the highest density of cone photoreceptors, providing the highest visual resolution and detail.

Optic Disc

The structural exit point on the retina where axons of ganglion cells bundle to form the optic nerve; devoid of photoreceptors, it creates the natural blind spot.

Myopia

A refractive visual condition (nearsightedness) where the lens cannot flatten sufficiently or the eyeball is too long, causing images of distant objects to focus in front of the retina.

Hyperopia

A refractive visual defect (farsightedness) where the lens cannot become spherical enough or the eyeball is too short, causing images of nearby objects to focus behind the retina.

Trichromatic Theory

The color vision theory formulated by Young and Helmholtz asserting that human color perception relies on three distinct types of cones sensitive to short (blue), medium (green), or long (red) wavelengths.

Opponent-Process Theory

Ewald Hering's color theory stating that color processing beyond the retina occurs in three opposing paired channels (red-green, blue-yellow, black-white), which explains the perception of negative afterimages.

Stroboscopic Motion

An illusory perception of smooth movement created by presenting a sequence of stationary visual images or flashing lights in rapid succession, as discovered by Max Wertheimer in $1912$.

Place Theory of Pitch Perception

Hermann von Helmholtz's pitch theory stating that sound frequencies are encoded based on the specific location of maximal vibration along the basilar membrane.

Temporal Theory of Pitch Perception

Lord Rutherford's pitch theory positing that sound frequency is encoded by the firing rate of action potentials across the entire auditory nerve, limited to frequencies below $1000\text{ impulses/sec}$.

Tinnitus

A sensory symptom involving the phantom perception of ringing, buzzing, or other noises in one or both ears in the absence of an external acoustic stimulus.

Conductive Hearing Loss

A hearing impairment caused by physical failure in the mechanical transmission of sound waves through the outer ear canal, eardrum, or ossicles to the cochlea's oval window.

Sensorineural Hearing Loss

Hearing impairment caused by structural damage to hair cells in the cochlea, the auditory nerve, or central neural pathways that transmit auditory signals to the brain.

Lingual Papillae and Taste Buds

Specialized surface structures on the tongue, categorized as foliate, fungiform, and circumvallate papillae, which house receptor cells that mediate gustation.

Proprioception

The somatosensory capability that provides awareness of the static position and orientation of the body and its limbs in space.

Kinesthesis

The sensory awareness and perception of active or passive body and limb movements through space.

Congenital Analgesia

A rare inherited condition where an individual is born completely unable to perceive physical pain despite maintaining normal sensitivity to touch, vibration, and temperature.

Vestibular Sense

The sensory system composed of the fluid-filled utricle, saccule, and semicircular canals in the inner ear that detects head movement, gravity, and acceleration to maintain balance.

Falsifiability

Karl Popper's core criterion of scientific empirical theories requiring that an assertion or hypothesis must be capable of being empirically tested and potentially proven wrong.

Hindsight Bias

The common cognitive tendency to falsely believe, after an event has occurred, that one could have accurately predicted or anticipated the outcome.

Two-Factor Theory of Emotion

Schachter and Singer's formulation stating that emotional experiences depend on two necessary factors: physiological arousal and the cognitive interpretation/labeling of that arousal within situational context.

Independent Variable

The experimental variable that is directly and intentionally manipulated or categorized by the researcher to determine its causal effect.

Dependent Variable

The variable measured and observed by researchers to assess whether it changes in response to the manipulation of the independent variable.

Operationalization

The process of translating abstract, unobservable psychological constructs (such as attention or intelligence) into explicit, quantifiable, and measurable variables.

Within-Participant Design

An experimental framework where every subject participates in all conditions (both experimental and control), increasing statistical power and controlling for individual variation.

Between-Participant Design

An experimental framework where different subjects are randomly allocated to separate groups, with each group receiving only one condition of the independent variable.

p-Value

The probability in inferential statistics of obtaining an effect equal to or greater than the observed result if the null hypothesis were true, conventionally evaluated against a threshold of $< 5\%$.

Power Analysis

An a priori statistical procedure used before starting data collection to calculate the sample size needed to reliably detect a true effect of a specified magnitude.

Correlation Coefficient

A standardized statistical index ranging between $-1$ and $+1$ that quantifies the strength and direction of the linear co-variation between two variables without demonstrating causation.