Colin DeYoung, a psychology professor, discusses the modern day personality hierarchy, the scientific validity of the Myers-Briggs Type Indicator (MBTI), dopamine's role as the neuromodulator of exploration, the link between compassion and imagination, the neuroscience of anxiety, the cybernetics of personality, and the effects of therapy on personality change.
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Quick takeaways
Personality traits can be understood within the framework of cybernetic functioning, where human behavior is driven by a wide range of goals including exploration.
The Myers-Briggs Type Indicator (MBTI) is a flawed personality assessment that fails to accurately capture the complexity and multidimensionality of personality traits.
Dopamine plays a crucial role in motivation and reward-seeking behavior, influencing extraversion, openness to new experiences, and industriousness.
Deep dives
The Big Five and Cybernetic Functioning
The Big Five traits of personality, which include extraversion, neuroticism, conscientiousness, agreeableness, and openness to experience, can be understood within the framework of cybernetic functioning. Cybernetics is the study of goal-directed systems that regulate themselves through feedback from their environment. Human beings, as goal-directed systems, exhibit cybernetic functioning. For example, when we feel thirsty, it is a feedback mechanism that alerts us to the need for liquid to maintain our body's balance. While human behavior is driven by a wide range of goals, exploration can be seen as a unique category, as it does not serve a specific need but can lead to the discovery of new goals and experiences.
The Limitations of the Myers-Briggs Personality Inventory
The Myers-Briggs Type Indicator (MBTI) is a popular but flawed personality assessment based on Carl Jung's theories. One of the main issues with the MBTI is its categorization of individuals into binary opposites, such as extrovert vs. introvert or thinking vs. feeling. Personality, however, is better understood as existing on a spectrum. Moreover, the MBTI fails to accurately capture the complexity and multidimensionality of personality traits. For instance, the thinking-feeling dimension presents a false dichotomy between analytical and compassionate personalities, which are not inherently opposed. Rather, many individuals exhibit both intellectual and compassionate traits, highlighting the need for a more nuanced approach to personality assessment.
Dopamine and Personality Traits
Dopamine, often mistakenly referred to as a pleasure chemical, plays a crucial role in motivation and reward-seeking behavior. It drives the tendencies associated with extraversion, such as seeking social rewards and engaging in exploratory behavior. Furthermore, dopamine is also linked to openness and intellect. Individual differences in dopamine function influence an individual's level of extroversion, openness to new experiences, and industriousness. The influence of dopamine on personality traits provides insight into the motivations and behaviors of individuals.
The Hierarchy of Personality Traits and Connectivity in the Brain
Personality traits exist within a hierarchical framework. Traits such as extraversion, openness, neuroticism, conscientiousness, and agreeableness make up the higher-order dimensions of personality. Within each dimension, there are more specific sub-traits. For example, within openness and intellect, there are traits related to imagination and intellectual curiosity. Neuroscience research shows that specific brain networks are associated with these personality traits. Default mode network connectivity is linked to imaginative thinking and self-awareness, while the salience network is related to reward and goal-directed behavior. Understanding the brain's role in personality allows for greater insights into the mechanisms underlying individual differences in behavior and cognitive processes.
The Cybernetic Big Five Theory
The speaker discusses the Cybernetic Big Five Theory, which suggests that the five major personality traits represent underlying cybernetic mechanisms that allow individuals to pursue their goals effectively.
A formal theory of psychopathology
The speaker explains that mental illnesses are not categorical entities, but rather dysfunctions in cybernetic processes that hinder individuals from effectively pursuing their goals. The goal is to develop a comprehensive understanding of psychopathology by combining research on personality, neuroscience, and the neurobiological basis of mental disorders.
Today I’m really excited to have Colin DeYoung on the podcast. Dr. DeYoung is associate professor of psychology at the University of Minnesota. He specializes in personality psychology but is especially interested in personality neuroscience. Besides being a prolific academic and researcher, I am also honored to count him as a dear friend and collaborator.
In this episode we discussed wide-range of topics relating to personality, including:
The modern day personality hierarchy
The “Big Two”: Stability and Plasticity
How Carl Jung developed his theory of introversion
The latest science of introversion
The scientific validity of the Myers-Briggs Type Indicator (MBTI)