Cluster A – Hibernator's Library

As mentioned in my opening post about personality disorders, personality disorders are split into three clusters: A, B, and C. This post will discuss the cluster A personality disorders. Cluster A disorders are characterized by distrust, suspiciousness, and social detachment. Often, people with cluster A personality disorders are considered eccentric or odd.

The characteristic traits of paranoid personality disorder are suspiciousness and mistrust of others, tendency to see oneself as blameless, and tendency to be on guard for perceived attacks by others. The disorder develops in early adulthood. To be diagnosed, a person must exhibit 4 or more of 7 traits: 1) he suspects, without sufficient basis, that others are exploiting, harming, or deceiving him; 2) he is preoccupied with unjustified doubts about the loyalty or trustworthiness of friends or associates; 3) he is reluctant to confide in others because of unwarranted fear that the information will be used maliciously against him; 4) he reads hidden demeaning or threatening meanings into benign remarks or events; 5) he persistently bears grudges; 6) he perceives attacks on his character or reputation that are not apparent to others and is quick to react angrily 7) he has recurrent suspicions, without justification, regarding fidelity of spouse or partner.

Of course, I am unqualified to diagnose anyone with a personality disorder, but I think real-life stories are helpful.

When I worked in retail, there was a guy that I had a crush on. We had been “friends” for almost a year, and I figured it was ok to tell him I liked him. He freaked out and said that I’d betrayed him (because he wasn’t ready to date anyone due to a bad experience in the past).

He soon became incredibly paranoid. He accused me to the manager first of stalking him within the store, then of calling his phone number just to hear the sound of his voice (mind you, this guy never handed his phone number out to anyone, so he was basically accusing me of sneaking into the office and illicitly looking up his number), and finally, he accused me of placing a kilo of marijuana near his car. (Though he couldn’t produce said kilo for evidence.)

Looking back, I realized his behavior had been odd all along. He was huge on conspiracy theory; stockpiled guns; thought everyone was out to get him; didn’t tell anyone where he lived, what his phone number was, or any personal details about his past; and he accused me of being nasty and demeaning when I made a casual comment “Oh, you’ve already started Christmas shopping? Seems a bit early.” And boy could he hold a grudge.

Since then, I’ve wondered what happened to this guy. He was really a sweet, caring person. I worry about his health and safety, since his paranoia clearly had a huge negative impact on his life.

This is one of the personality disorders that would be abolished if the next DSM adopts a dimensional approach as discussed in my previous post. I wonder what category these traits would fall into then?

Schizoid personality disorder is characterized by impaired social relationships and low desire to form attachments to others. To be diagnosed with schizoid personality disorder, a patient must have 4 of the following 7 traits: 1) he neither desires nor enjoys close relationships, including being part of a family; 2) he almost always chooses solitary activities; 3) he has little, if any, interest in having sexual experiences with another person; 4) he takes pleasure in few, if any, activities; 5) he lacks close friends or confidants other than first-degree relatives; 6) he appears indifferent to the praise or criticism of others; 7) he shows emotional coldness, detachment, or flattened affectivity.

This is another personality disorder that would disappear with the dimensional approach.

People with schizotypal personality disorder are also loners. People with scizotypal personality disorder tend to have superstitious beliefs, and some experience psychotic symptoms like believing they have magical powers. They can also be paranoid, have distorted speech, or see special meaning in ordinary objects or events. Schizotypal personality disorder is thought to be related to schizophrenia – perhaps a less severe manifestation or a precursor to schizophrenia.

In order to be diagnosed with schizotypal personality disorder, a patient must have five or more of the following traits: 1) he has ideas of reference (believing innocuous events or objects have strong personal meaning); 2) he almost always chooses solitary activities; 3) he has unusual perceptual experiences (mild hallucinations); 4) he has odd thinking and speech (e.g. vague, circumstantial, metaphorical, overelaborate, or stereotyped); 5) he exhibits suspiciousness or paranoid ideation; 6) he has inappropriate or constricted affect; 7) his behavior or appearance is odd or eccentric; 8) he has a lack of close friends or confidants other than first-degree relatives; 9) he has excessive social anxiety.

This is the only cluster A personality disorder that would not be lost if we switched to the dimensional approach of diagnosis.

This is a series of posts summarizing what I’m learning in my Abnormal Psychology course. Much of the information provided comes from reading my James N. Butcher’s textbook Abnormal Psychology. To read the other posts, follow these links:

The Definition of Abnormal
A History of Abnormal Psychology
Abnormal Psychology in Contemporary Society
Contemporary Viewpoints on Treating Mental Illness – Biology
Contemporary Viewpoints on Treating Mental Illness – Psychology
Frontline: New Asylums
Brave New Films: This is Crazy
Clinical Mental Health Diagnosis: Biological Assessment
Clinical Mental Health Diagnosis: Psychological Assessment
Does the DSM Encourage Overmedication?
Post Traumatic Stress Syndrome – The Basics
Panic Disorder
Obsessive Compulsive Disorder
Hoarding and Body Dysmorphic Disorders
Depression – an Overview
Personality Disorders – Clusters and Dimensions
Personality Disorders – Cluster A
Personality Disorders – Cluster B
Personality Disorders – Cluster C
Biological Effects of Stress on Your Body
Somatic Symptom and Related Disorders
Dissociative Disorders
Borderline Personality Disorder
Dialectical Behavioral Therapy
Paraphilic Disorders
Gender Dysphoria – Homosexuality and Transgender
Anxiety Disorders
Bipolar Disorder – The Basics
Suicide – An Overview

References:

Butcher, James N. Hooley, Jill M. Mineka, Susan. (2014) Chapter 10: Personality Disorders. Abnormal Psychology, sixteenth edition (pp. 328-366). Pearson Education Inc.

Personality disorders are a difficult topic for me. For one thing, they are highly stigmatized. And I think the term “personality disorder” encourages that stigma by suggesting that there is something terribly wrong with a person’s identity, rather than implying that people with these disorders respond to the world in a highly ineffective manner that creates problems for themselves and others. In fact, Butcher describes “personality disorder” in his textbook Abnormal Psychology as: characterized by “chronic interpersonal difficulties and problems with one’s identity or sense of self.” This description is good as long as we accept that the “problem with one’s identity” is that one’s self-esteem and view of one’s relationships with others is unstable.

Everybody exhibits some dysfunctional beliefs and behaviors, but they should not be diagnosed with a personality disorder unless the behavior is pervasive and inflexible, and causes “clinically significant” distress or impairment in functioning. People with personality disorders generally cause just as many problems for others as they do in their own lives. Most do not recognize the dysfunction in their own thoughts or behaviors; therefore, it is often friends, family, or the law that force people with personality disorders to seek treatment.

Personality disorders are grouped into three clusters:

Cluster A includes paranoid, schizoid, and schizotypal personality disorders. People with cluster A disorders tend to be suspicious, paranoid, and/or withdrawn.

Cluster B includes histrionic, narcissistic, antisocial, and borderline personality disorders. People with these disorders have a tendency towards drama, emotionality, and erratic behavior.

Cluster C includes avoidant, dependent, and obsessive-compulsive personality disorders. These people tend to experience anxiety and fear.

Most personality disorders are not caused by a few traumatic events, but by a build-up of many stressors throughout life – like childhood abuse, neglect, or criminal behavior in parents. A child’s natural temperament may also have a strong impact on the development of a personality disorder later in life.

Compared to the other mental illnesses, there is little research on personality disorders. This is because people with personality disorders often do not feel there is anything wrong with themselves, or if they realize there is something wrong, they have less-than-helpful personality characteristics (such as lack of empathy or withdrawn social interaction). Another difficulty in studying people with personality disorders is the large amount of misdiagnosing that occurs. The criteria for diagnosis are more influenced by a clinician’s judgement than are the criteria for other mental illnesses.

Due to these difficulties in diagnosis of personality disorders, much work has been done in developing dimensional systems as an alternative to the cluster model. A dimensional model would rate a person on a set of personality traits, thus providing an overall behavioral pattern. Such an analysis would theoretically be more empirical than the cluster model. Such changes were proposed for the DSM-5, but they were deemed too complex for rushed clinicians and were shunted off into the “Emerging Measures and Models” section.

One popular dimensional approach is the five-factor model. According to proponents of the Big Five, everyone’s personalities can be defined by our strengths and weaknesses in five traits: neuroticism, openness to experience, extraversion, agreeableness, and conscientiousness. Each of these traits are further separated into sub-traits.

Neuroticism: anxiety, anger/hostility, depression, self-consciousness, impulsiveness, and vulnerability.

Extraversion: warmth, assertiveness, gregariousness, activity, excitement seeking, and positive emotions.

Openness to experience: fantasy, aesthetics, feelings, actions, ideas, and values.

Agreeableness: trust, straightforwardness, altruism, compliance, modesty, and tender mindedness.

Conscientiousness: competence, order, dutifulness, achievement striving, self-discipline, and deliberation.

Using this model, when a patient comes in for analysis, she would be rated high or low for each of the factors. The overall pattern (combined with knowledge of whether the individual experiences clinically significant distress) can be used to diagnose a personality disorder. Using the five-factor model, only six of the personality disorders would remain: borderline, antisocial, schizotypal, narcissistic, obsessive-compulsive, and avoidant. The others (paranoid, schizoid, histrionic, and dependent personality disorders) would be dropped.

Hopefully much research will go into developing a more empirical approach to diagnosis of personality disorders, for I feel that patients would benefit greatly from treatments that target specific dysfunctional traits instead of a generalized “personality disorder.”

If you’re interested, there are quite a few Big Five tests on the internet. I just took the Truity test. If you take it, you don’t have to create an account. There’s a “skip” option. My scores were:

Open to experience: 80%

Conscientiousness: 85%

Extraversion: 57.5%

Agreeableness: 92.5%

Neuroticism: 52.5%

Apparently, a score of 50% is considered “average person.” This test was fun and gives you an idea of what types of questions might be asked with a dimensional approach to diagnosis; however, it was certainly too short and silly to accurately diagnose a personality disorder. I’m surprised I didn’t get a higher score on neuroticism because of my bipolar disorder. Hopefully the test developed by clinical psychologists is much more extensive and precise. 🙂

This is a series of posts summarizing what I’m learning in my Abnormal Psychology course. Much of the information provided comes from reading my James N. Butcher’s textbook Abnormal Psychology. To read the other posts, follow these links:

The Definition of Abnormal
A History of Abnormal Psychology
Abnormal Psychology in Contemporary Society
Contemporary Viewpoints on Treating Mental Illness – Biology
Contemporary Viewpoints on Treating Mental Illness – Psychology
Frontline: New Asylums
Brave New Films: This is Crazy
Clinical Mental Health Diagnosis: Biological Assessment
Clinical Mental Health Diagnosis: Psychological Assessment
Does the DSM Encourage Overmedication?
Post Traumatic Stress Syndrome – The Basics
Panic Disorder
Obsessive Compulsive Disorder
Hoarding and Body Dysmorphic Disorders
Depression – an Overview
Personality Disorders – Clusters and Dimensions
Personality Disorders – Cluster A
Personality Disorders – Cluster B
Personality Disorders – Cluster C
Biological Effects of Stress on Your Body
Somatic Symptom and Related Disorders
Dissociative Disorders
Borderline Personality Disorder
Dialectical Behavioral Therapy
Paraphilic Disorders
Gender Dysphoria – Homosexuality and Transgender
Anxiety Disorders
Bipolar Disorder – The Basics
Suicide – An Overview

References:

Butcher, James N. Hooley, Jill M. Mineka, Susan. (2014) Chapter 10: Personality Disorders. Abnormal Psychology, sixteenth edition (pp. 328-366). Pearson Education Inc.