Psychology of Extraversion and Arousal
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Questions and Answers

What physiological basis does the position on the Extraversion spectrum depend on?

  • Cortical arousal (correct)
  • SNS responsiveness
  • Limbic system activity
  • Sensory stimuli processing
  • How does the Ascending Reticular Activating System (ARAS) affect introverts and extraverts?

  • It manages responses to cognitive stimuli.
  • It leads extraverts to avoid stimulation.
  • It causes higher arousal in introverts.
  • It manages arousal caused by sensory stimuli. (correct)
  • What characterizes the arousal levels of introverts compared to extraverts?

  • Introverts seek stimulation, while extraverts avoid it.
  • Introverts have lower arousal and seek to avoid overstimulation. (correct)
  • Introverts react more strongly to sensory stimuli than extraverts.
  • Introverts have higher arousal than extraverts.
  • Which system is involved in managing arousal from emotional stimuli according to Eysenck's theories?

    <p>Neuroticism-reticular-limbic system (B)</p> Signup and view all the answers

    What evidence supports Eysenck's theory on extraversion?

    <p>Behavioral studies showing introverts prefer slower response times. (B)</p> Signup and view all the answers

    What is meant by the term 'phenotype' in the context of personality?

    <p>The outward manifestation of traits in an individual (C)</p> Signup and view all the answers

    Which example best illustrates a neural correlate of personality?

    <p>Cortical folding in the left DLPFC impacting TN scores (D)</p> Signup and view all the answers

    Research into genetic heritability primarily focuses on what aspect?

    <p>The shared genetic traits between parents and children (B)</p> Signup and view all the answers

    How do biological theories of personality generally structure their framework?

    <p>DNA → Brain Structure → Personality (A)</p> Signup and view all the answers

    What role do non-functional sequences in chromosomes play within the context of personality?

    <p>They are involved in gene transcription processes. (B)</p> Signup and view all the answers

    What aspect of personality does asexuality in hyenas primarily exhibit?

    <p>Confidence and jealousy (B)</p> Signup and view all the answers

    Which specific method was mentioned for evaluating animal personality?

    <p>Cating responses to situations (B)</p> Signup and view all the answers

    Which species demonstrated repeatability in exploratory behavior as observed in Dingemanse et al. (2002)?

    <p>Great tits (B)</p> Signup and view all the answers

    In the study by Gosling & John (1999), which personality trait was most frequently observed in the evaluated animals?

    <p>Extraversion (D)</p> Signup and view all the answers

    What did the research suggest about projecting human understanding onto animal behavior?

    <p>It is often inaccurate and misleading. (D)</p> Signup and view all the answers

    Which system is associated with impulsivity and positive emotion?

    <p>Behavioural Approach System (C)</p> Signup and view all the answers

    What does the Behavioural Inhibition System primarily signal?

    <p>Punishment signals (C)</p> Signup and view all the answers

    According to Gray's Reinforcement Sensitivity Theory, which of the following is NOT one of the three neurological systems underlying personality?

    <p>Cognitive Behavioural System (B)</p> Signup and view all the answers

    What aspect of personality does the Fight-Flight-Freeze system primarily respond to?

    <p>Threats (A)</p> Signup and view all the answers

    What is a key problem with Eysenck's Theory related to Neuroticism (N)?

    <p>Unclear relationship between N and arousal (A)</p> Signup and view all the answers

    What did the 2018 Hierarchical Reinforcement Sensitivity Theory study utilize to predict personality traits?

    <p>Resting fMRI data (C)</p> Signup and view all the answers

    How are behavioral patterns shaped according to the Reinforcement Sensitivity Theory?

    <p>Regarding stimuli, rewards, and punishments (A)</p> Signup and view all the answers

    What is one key concept derived from individual differences within the Reinforcement Sensitivity Theory?

    <p>Neural activation levels affecting behavior (C)</p> Signup and view all the answers

    What does the Behavioral Activation System (BAS) primarily seek?

    <p>To seek rewards and new events (C)</p> Signup and view all the answers

    How did caffeine affect the performance of introverts and extroverts according to the evidence for Gray's theory?

    <p>Hindered performance in introverts but benefited extroverts (A)</p> Signup and view all the answers

    Which personality system is related to the volume of the hippocampus?

    <p>Behavioral Inhibition System (BIS) (B)</p> Signup and view all the answers

    What is the basic driver of evolutionary arguments in psychology?

    <p>Selective functions based on genes (A)</p> Signup and view all the answers

    Which index measures the likelihood to ascend within a social hierarchy?

    <p>LDE (Locus of Dominance Engagement) (A)</p> Signup and view all the answers

    What is a notable risk associated with high levels of extraversion (E)?

    <p>Increased risk of arrest and serious injury (D)</p> Signup and view all the answers

    What does the Locus of Control (LOC) measure in response to social dilemmas?

    <p>Tendency to trust others and cooperate (D)</p> Signup and view all the answers

    Which statement regarding personality dimensions is accurate according to Nettle's findings?

    <p>Personality dimensions are context and environment dependent. (C)</p> Signup and view all the answers

    What does dominant genetic variance refer to?

    <p>Genes that are expressed regardless of other genes (C)</p> Signup and view all the answers

    In the context of twin studies, what is the main implication of comparing MZ twins to DZ twins?

    <p>It helps to assess the extent of genetic versus environmental differences (D)</p> Signup and view all the answers

    What percentage of variance in personality traits is estimated to be accounted for by genetic influences?

    <p>40-55% (D)</p> Signup and view all the answers

    Which of the following factors is NOT typically considered part of the non-shared environment?

    <p>Shared family traditions (D)</p> Signup and view all the answers

    What is the role of the ORDU gene in personality traits?

    <p>It may influence novelty-seeking and impulsivity (C)</p> Signup and view all the answers

    According to Ricmann (1997), how is heritability calculated?

    <p>By doubling the difference between MZ twin correlation vs DZ (B)</p> Signup and view all the answers

    What is a significant challenge in identifying common genetic variations that impact personality?

    <p>The polygenic nature of personality traits (D)</p> Signup and view all the answers

    Which of the following is NOT a factor considered in genetic studies on personality?

    <p>Cultural assimilation during childhood (A)</p> Signup and view all the answers

    Flashcards

    Phenotype

    The outward expression of an organism's traits, determined by the interaction of genes and environment.

    Genetic Heritability

    A measure of how much of a trait's variation is due to genetic factors.

    Neural Correlates of Personality

    The study of how brain structures relate to personality traits.

    Dorsolateral Prefrontal Cortex (DLPFC)

    The section of the brain responsible for planning, working memory, and decision-making. It may play a significant role in Trait Neuroticism.

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    Gene Expression

    The process of transforming genetic information into proteins.

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    Arousal Level

    A person's natural level of arousal, influenced by the Ascending Reticular Activating System (ARAS). Extroverts have higher arousal and seek more stimulation, while introverts have lower arousal and prefer less stimulation.

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    Ascending Reticular Activating System (ARAS)

    A brain structure that regulates arousal and attention in response to sensory stimuli. Higher activity in the ARAS leads to higher arousal, while lower activity leads to lower arousal.

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    Extraversion

    A personality trait characterized by a tendency to be outgoing, sociable, and enjoy social interaction. Extraverts have higher arousal and seek out stimulation.

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    Introversion

    A personality trait characterized by a tendency to be introspective, reserved, and prefer quiet and solitary activities. Introverts have lower arousal and prefer less stimulation.

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    Limbic System

    A brain structure responsible for processing and managing emotional responses. Higher activity in the limbic system is associated with higher levels of neuroticism.

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    Additive genetic variance

    The total effect of a trait stemming from genetic loci, where each locus contributes measurably towards the trait.

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    Dominant genetic variance

    Genes that are always expressed, regardless of the presence of other genes, leading to a dominant phenotype.

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    Epistatic genetic variance

    Genes interacting with each other, where the effect of one gene depends on the presence or absence of another gene, creating complex trait expression.

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    Non-shared environment

    The portion of environmental influence that is unique to each individual, distinct from shared family experiences.

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    Heritability

    The extent to which genetic factors contribute to individual differences in a trait, as estimated from twin studies.

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    Adoption studies

    Identical twins raised separately share similar DNA sequences but experience different environments, allowing us to isolate the impact of genetics vs. environment.

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    ORDU gene

    A gene associated with dopamine function, potentially linked to novelty-seeking and impulsivity, but not impacting extraversion.

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    Twin and adoption studies

    Studies on twins and adoptees that have helped researchers disentangle the relative influences of genetics and environment on personality traits.

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    Bio-bases of personality

    The idea that personality traits within a species might have a biological basis.

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    Observer ratings of animal behavior

    A research method used to study animal personality by observing their behavior in different situations.

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    Gosling & John (1999)

    A study that used factor analysis to analyze personality in different animal species (including chimps, gorillas, monkeys, hyenas, and even octopuses!).

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    Explorative behavior in Great Tits (Dingemanse et al, 2002)

    A study that examined the repeatability of exploratory behavior in Great Tits.

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    Repeatability of personality in animals

    The concept of personality traits in animal species being relatively consistent over time, even when studied in different settings.

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    Reinforcement Sensitivity Theory (RST)

    A theory that explains personality based on three neurological systems: the Behavioral Approach System (BAS), the Behavioral Inhibition System (BIS), and the Fight-Flight-Freeze System.

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    Behavioral Approach System (BAS)

    The neurological system associated with impulsivity and positive emotions. It responds to signals of impending reward, triggering approach behavior. This system involves the medial forebrain bundle and lateral hypothalamus.

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    Behavioral Inhibition System (BIS)

    The neurological system linked to anxiety and negative emotions. It responds to signals of punishment, triggering inhibition and withdrawal from threats. This system is comprised of the septo-hippocampal system and its connected structures.

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    Fight-Flight-Freeze System

    A neurological system involved in responding to immediate threats. It triggers escape behavior, including fighting, fleeing, or freezing.

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    Environmental Influence on Personality

    The idea that personality traits can be influenced by environmental factors. This suggests that our personalities aren't fixed, but can change depending on our experiences and surroundings.

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    Hierarchical Reinforcement Sensitivity Theory (HRST)

    A biological model that explains how our brains respond to rewards and punishments. This system includes the Behavioral Approach System (BAS) and the Behavioral Inhibition System (BIS).

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    Resting fMRI

    A type of brain imaging technique that measures brain activity while the individual is at rest.

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    Functional Connectivity

    The connectivity between different brain regions. It plays a role in understanding how information flows and is processed in the brain.

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    Behavioral Activation System (BAS)

    A brain system that is activated by rewards and new events, contributing to an individual's impulsivity. Think of it as a 'go' system, making you seek out pleasurable experiences.

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    Fight-Flight-Freeze System (FFS)

    A brain system responding to immediate and severe threats, leading to fight, flight, or freeze response. Think of it as a survival mechanism triggered by danger.

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    Gray's Theory

    A theory that suggests our personalities are influenced by how our brains respond to rewards and punishments. Think of it as a way of explaining why some people are more impulsive or cautious.

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    Locus of Control (LOC)

    The tendency to trust others and cooperate in social situations. Think of it as having faith in others and being willing to work together.

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    Level of Agreeableness (LOA)

    A measure of how willing someone is to conform to social norms and cooperate. Think of it as being a team player and following the rules.

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    Level of Dominance (LDE)

    A measure of how likely someone is to climb the social ladder and strive for dominance. Think of it as having ambition and a competitive drive.

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    Evolutionary Psychology and Personality

    The idea that our personalities are influenced by the evolutionary pressures we have faced. Think of it as our traits being shaped by survival needs.

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