Personality Disorders PSYC, Lecture notes of Psychology

Personality Disorders PSYC in class lecture summary

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2023/2024

Uploaded on 01/26/2026

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The Spectrum of Personality: Understanding Personality Disorders
While many clinical disorders come and go in "episodes," Personality
Disorders are different. They are enduring, rigid, and long-standing patterns
of behavior that begin in adolescence and continue throughout adulthood.
These patterns are so deeply ingrained that the person often doesn't see
their own behavior as a problem—even if it causes massive conflict with
everyone else.
Psychologists organize these into three "clusters":
Cluster A (Odd/Eccentric): Includes behaviors like extreme social
detachment or deep suspicion of others.
Cluster B (Dramatic/Erratic): Includes impulsive or overly emotional
behaviors, such as Antisocial Personality Disorder (a lack of
conscience for wrongdoing) or Borderline Personality Disorder
(instability in relationships and self-image).
Cluster C (Anxious/Fearful): Includes behaviors driven by a
paralyzing fear of rejection or a need for total control.
A Mini Example
Think of a person with Narcissistic Personality Disorder (Cluster B). They
don't just have high self-esteem; they have an exaggerated sense of self-
importance and a total lack of empathy for others. If a friend tells them
about a tragedy, the Narcissistic individual might immediately steer the
conversation back to their own minor achievements because they genuinely
believe their needs are the only ones that matter.
To recap, personality disorders aren't just "moods"—they are the "operating
system" of the person’s social life. Because these traits are part of
who the
person is
, they are notoriously difficult to treat compared to something like a
temporary bout of depression.
The Paths to Healing: Major Forms of Therapy
Once a disorder is diagnosed, how do we fix it? Treatment usually falls into
two big buckets: Psychotherapy (talk therapy) and Biomedical Therapy
(medication or medical procedures).
One of the most effective and commonly tested forms of talk therapy is
Cognitive-Behavioral Therapy (CBT). CBT is a "problem-solving"
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The Spectrum of Personality: Understanding Personality Disorders While many clinical disorders come and go in "episodes," Personality Disorders are different. They are enduring, rigid, and long-standing patterns of behavior that begin in adolescence and continue throughout adulthood. These patterns are so deeply ingrained that the person often doesn't see their own behavior as a problem—even if it causes massive conflict with everyone else. Psychologists organize these into three "clusters":  Cluster A (Odd/Eccentric) : Includes behaviors like extreme social detachment or deep suspicion of others.  Cluster B (Dramatic/Erratic) : Includes impulsive or overly emotional behaviors, such as Antisocial Personality Disorder (a lack of conscience for wrongdoing) or Borderline Personality Disorder (instability in relationships and self-image).  Cluster C (Anxious/Fearful) : Includes behaviors driven by a paralyzing fear of rejection or a need for total control. A Mini Example Think of a person with Narcissistic Personality Disorder (Cluster B). They don't just have high self-esteem; they have an exaggerated sense of self- importance and a total lack of empathy for others. If a friend tells them about a tragedy, the Narcissistic individual might immediately steer the conversation back to their own minor achievements because they genuinely believe their needs are the only ones that matter. To recap, personality disorders aren't just "moods"—they are the "operating

system" of the person’s social life. Because these traits are part of who the

person is, they are notoriously difficult to treat compared to something like a

temporary bout of depression. The Paths to Healing: Major Forms of Therapy Once a disorder is diagnosed, how do we fix it? Treatment usually falls into two big buckets: Psychotherapy (talk therapy) and Biomedical Therapy (medication or medical procedures). One of the most effective and commonly tested forms of talk therapy is Cognitive-Behavioral Therapy (CBT). CBT is a "problem-solving"

approach that focuses on the link between thoughts, feelings, and actions. It assumes that if you can change a person's distorted thinking, their feelings and behaviors will follow. A Mini Example Imagine a student fails one quiz and thinks, "I'm a total failure and I'll never graduate." This thought leads to a feeling of hopelessness, which leads to the behavior of quitting the class. A CBT therapist would challenge that

thought: "Is failing one quiz really evidence that you're a total failure?" By

replacing the "broken" thought with a realistic one ("I just need to study differently next time"), the student feels better and keeps trying. In summary, therapy is about retraining the brain. Whether through biological means (like SSRIs for depression) or psychological means (like CBT), the goal is to break the maladaptive patterns and replace them with healthy ones. Biomedical Interventions: Drugs and Direct Brain Stimulation When talk therapy isn't enough, we turn to Biomedical Therapies. These treatments physically change the brain's chemistry or circuitry. The most common form is Psychopharmacology , which is the study of how drugs affect the mind and behavior.  Antipsychotics : Used to treat Schizophrenia by blocking dopamine.  Antidepressants : Often called SSRIs (Selective Serotonin Reuptake Inhibitors) , which increase the amount of serotonin available in the brain.  ECT (Electroconvulsive Therapy) : A procedure, used only for severe depression that hasn't responded to drugs, where a brief electrical current is sent through the brain. A Mini Example Think of your brain like a sink. If you don't have enough "water" (serotonin) in the sink, you feel depressed. An SSRI works like a "plug" in the drain. It doesn't necessarily create more water, but it stops the water from draining away too fast, so the levels stay high enough for you to feel normal. To recap, biomedical therapy views mental disorders as "glitches" in the biological hardware. By adjusting chemicals or using electrical stimulation,