Personality Psychology: Stability, Development, Culture, and Biology

Comprehensive vocabulary flashcards covering personality stability, lifespan development, intervention models, cross-cultural and cultural approaches, and neurobiology/biochemistry.

Orthogonal Traits

The theoretical property of the Big Five personality traits indicating that they are independent of one another and should not correlate.

Rank-Order Consistency

The tendency of individuals to maintain their relative standing or rank on personality traits over time compared to peers of the same age.

Cumulative Continuity Principle

The principle stating that personality consistency increases across the lifespan, becoming most stable in middle adulthood.

Predictive Validity (Personality)

The ability of personality traits measured early in life (such as childhood) to predict behaviors, relationship outcomes, and life events years or decades later.

Temperament

Early-life behavioral and emotional tendencies in infancy and childhood, partially determined by genetics, that persist across the lifespan.

Heterotypic Continuity

The continuity of an underlying personality trait across the lifespan despite being expressed through different, age-appropriate behaviors governed by social norms.

Person-Environment Transactions

Processes through which individuals respond to, seek out, and create environments that are compatible with and magnify their personality traits.

Active Person-Environment Transaction

A transaction in which a person seeks out compatible environments and avoids incompatible ones (e.g., an aggressive person going to bars where fights occur, or an introvert avoiding social gatherings).

Reactive Person-Environment Transaction

A transaction in which different individuals respond differently to the exact same situation (e.g., an extravert finding a party enjoyable while an introvert finds it unbearable).

Evocative Person-Environment Transaction

A transaction in which an individual's personality leads to behavior that actively changes the situation or environment they experience.

Causal Force

A process where a person's view of themselves shapes their behavior and how others treat them, further consolidating that personality trait over time.

Personality Development

Change in the mean level of a personality trait over time across a population.

Cross-Sectional Research

A research design that compares different groups of participants of various ages at a single point in time to make inferences about lifespan development.

Cohort Effects

Differences observed across age groups that arise because individuals grew up in different historical, technological, or social environments rather than from aging itself.

Longitudinal Research

A research method involving repeated assessments of the same individuals across years or decades, allowing researchers to isolate age effects from cohort effects.

Maturity Principle

The principle stating that traits needed to effectively perform adult social roles and responsibilities (Agreeableness, Conscientiousness, and emotional stability) increase with age.

Stability (Metatrait)

A higher-order personality factor characterized by the combination of high Agreeableness, high Conscientiousness, and low Neuroticism (emotional stability).

Plasticity (Metatrait)

A higher-order personality factor characterized by the combination of Extraversion and Openness to Experience, reflecting cognitive and behavioral exploration.

Personality Change

Intentional modification of personality traits achieved through psychiatric medications, psychotherapy (such as CBT), interventions, or life experiences.

Sociogenomic Trait Intervention Model

A framework outlining personality change through two preconditions (changing behaviors is desirable/necessary and feasible), followed by self-regulated behavioral changes, precondition 3 (behaviors become habitual), leading to trait change.

Cross-Cultural Approaches

A psychological framework that conceptualizes culture as an independent and discernible factor external to an individual's personality, typically using quantitative comparisons.

Cultural Approaches

A psychological framework that views culture and personality as inextricably linked and mutually influencing, using qualitative, bottom-up methods within cultures.

Culture as a Social Unconscious

The view that culture implicitly influences all aspects of thinking, feeling, and behaving, requiring it to be considered in all personality research.

HEXACO Model

A six-factor personality model derived through lexical approaches that adds Honesty-Humility to the traits of Emotionality, Extraversion, Agreeableness, Conscientiousness, and Openness.

Honesty-Humility

A trait in the HEXACO model defined by sincerity, fairness, greed-avoidance, authenticity, and modesty.

Reference-Group Effect

A phenomenon where individuals evaluate their traits relative to local cultural norms rather than an absolute standard, diminishing observed cross-cultural differences in self-report data.

Etic

An approach that studies concepts, behaviors, or personality traits from outside the cultural system to identify universal and comparable features across groups.

Emic

An approach that examines concepts, behaviors, and traits from inside a specific cultural system to understand culture-specific phenomena.

Easy Cultures

Cultures characterized by the availability of a wide variety of goals that individuals can pursue and achieve easily.

Tough Cultures

Cultures characterized by offering only a few socially accepted goals that are difficult to achieve.

Collectivist Cultures

Cultures where individuals view themselves as interdependent group members, prioritizing group harmony, social relationships, social worth, and saving face.

Individualist Cultures

Cultures where individuals view themselves as autonomous, prioritizing independence, self-esteem, prominence, and personal choice.

Ethnocentrism

The bias wherein an observer's perceptions and judgments of another culture are colored by the values and norms of their own cultural background.

Outgroup Homogeneity Bias

The tendency to view members of a cultural outgroup as all being alike while seeing members of one's ingroup as diverse.

Hypothalamus

A brain structure that regulates essential functions (hunger, thirst, body temperature, stress) and signals the nervous system to release hormones in the fight-or-flight response.

Amygdala

A brain region central to processing emotional stimuli tied to threat and reward, signaling the hypothalamus and dopaminergic reward pathways.

Nucleus Accumbens

A structure in the brain's reward circuit that releases dopamine in response to rewarding stimuli, driving reinforcement learning, motivation, and goal-directed behavior.

Hippocampus

A brain structure located near the amygdala that is responsible for encoding emotionally salient memories.

Insula

A brain region hidden within the lateral sulci that represents internal bodily states, integrates visceral signals into subjective feelings, and supports empathy.

Dorsolateral Prefrontal Cortex

A region of the prefrontal cortex responsible for maintaining long-term goals, cognitive control, impulse regulation, and emotional regulation.

Orbitofrontal Prefrontal Cortex

A prefrontal region responsible for assigning reward values to stimuli and updating those values based on internal physiological states.

Medial Prefrontal Cortex

A prefrontal region involved in self-referencing thoughts, rumination, and emotional regulation via its direct connections to the amygdala.

Substantia Nigra

A midbrain structure critical for dopamine production and dopamine-driven approach behavior.

Electroencephalography (EEG)

A noninvasive imaging method using scalp electrodes to detect rapid electrical firing patterns of the brain, offering high temporal accuracy but low spatial accuracy.

Magnetoencephalography (MEG)

A noninvasive imaging technique that uses sensors to detect magnetic indications of brain activity, providing both high temporal and high spatial accuracy.

Computed Tomography (CT Scan)

An imaging method that combines X-rays taken from multiple angles into cross-sectional slices to examine brain structures, but does not measure brain activity.

Functional Magnetic Resonance Imaging (fMRI)

A brain-imaging technique that uses magnetic pulses to track blood oxygen levels (the BOLD signal) to map brain activity during tasks relative to baseline.

Dopamine

A neurotransmitter that converts motivation into action, regulates reward seeking, and underpins the plasticity traits of Extraversion and Openness to Experience.

Endorphins

Naturally occurring endogenous opiates that provide pain relief and pleasant sensations, contributing to the heightened pleasure sensitivity seen in extraverts.

Serotonin

A neurotransmitter that regulates and stabilizes mood, inhibits behavioral impulses, and underpins the stability metatrait (Conscientiousness, Agreeableness, and emotional stability).

Testosterone

A hormone associated with drive, dominance, competitiveness, and aggression, showing an inverse biological relationship with Agreeableness.

Epinephrine

A hormone messenger (adrenaline) that circulates throughout the body, rising rapidly during acute stress to initiate the fight-or-flight response.

Norepinephrine

A neurotransmitter and hormone messenger (noradrenaline) operating primarily within the brain that surges during stress and threat detection.