Explore the dark side of personality. Learn about the three clusters of personality disorders, from antisocial behavior to avoidant tendencies.
In the thirty-fourth episode of Crash Course Psychology, Hank Green explores the rigid and enduring patterns of behavior known as personality disorders. Unlike mood disorders, which may come in episodes, personality disorders are characterized by inflexible traits that impair social functioning and deviate from cultural expectations. The episode breaks these disorders down into three primary "clusters." Cluster A includes "odd or eccentric" behaviors, such as paranoid or schizoid personalities. Cluster B focuses on "dramatic, emotional, or impulsive" behaviors, which are often the most well-known in popular culture. This cluster includes Histrionic, Narcissistic, Borderline, and the particularly dangerous Antisocial Personality Disorder (ASPD).
The video provides a deep dive into ASPD, often associated with sociopathy or psychopathy. Green explains that individuals with ASPD show a profound lack of conscience for wrongdoing, even toward friends and family members. You'll learn about the biological and environmental roots of this disorder, including reduced activity in the frontal lobes—the area responsible for planning and impulse control—and a lower-than-normal physiological response to stress or danger. Cluster C rounds out the discussion with "anxious or fearful" behaviors, such as Avoidant or Dependent personality disorders.
The lesson concludes by addressing the difficulty of treating these conditions, as individuals with personality disorders often do not believe they have a problem. Green emphasizes the importance of the biopsychosocial approach, illustrating how genetic predispositions can be "switched on" by environmental factors like childhood abuse or neglect. By the end of this episode, viewers will have a clear understanding of the difference between a "difficult personality" and a clinical disorder, as well as the immense challenge these conditions pose to both the individuals who have them and the society they inhabit.
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