PSY, MARCH.11th Study Notes on Clinical Psychology and Schizophrenia

Introduction to Clinical Psychology

  • Overview of topics in the final module on clinical psychology.
  • Focus on classification and diagnosis of psychological disorders.
  • Schedule:
    • Today: Discussion on schizophrenia.
    • Upcoming session: Coverage of other disorders.
    • Friday: Video lecture uploaded on Canvas about conference.
    • Unit two test grades will be released later today.

Information Sources for Psychological Disorders

  • Importance of using credible sources for information about psychological disorders:
    • Avoid self-diagnosis through unreliable sources (e.g., chatbots like ChatGPT).
    • Recommended sources include:
    • DSM (Diagnostic and Statistical Manual of Mental Disorders)
    • PubMed
    • Qualified healthcare professionals

Key Questions in Diagnosing Psychological Disorders

  • Main question: How to identify someone with a psychological disorder?
  • Distinction between related terms:
    • Maladaptive Behavior: Broad term encompassing a range of non-adaptive behaviors.
    • Psychopathology: Systematic study focusing specifically on classified mental disorders.
    • Clinical Disorders: More specific than psychopathology, focused on practical applications in treatment.

Historical Evolution of Mental Health Support

Supernatural Era

  • Early societies attributed mental illness to supernatural phenomena, leading to rituals and exorcisms.

Greek and Roman Influences

  • Mental health treated by physicians:
    • Concept of four humors (bodily fluids) causing mental disorders.
    • Treatment often included bloodletting and balancing humors.

Middle Ages

  • Return to supernatural explanations.
  • Common practices included imprisonment and mistreatment of the mentally ill.

Asylum Era (1400s - 1800s)

  • Establishment of asylums that functioned more as prisons than places of care.
  • Early classification of mental disorders into mania (hallucinations) and melancholia (depression).

Late 19th to Early 20th Century

  • Transition to more humane psychiatric care and biological treatments.
  • Key figure: Earl Propellant
    • Developed early diagnostic classification system tracking symptoms, comorbidities, and prognoses.
    • Differentiated between 13 groups of psychological disorders.

Mid 20th Century Advances

  • Introduction of electroconvulsive therapy (ECT) as a treatment.
  • Controversial surgical methods like lobotomies negatively impacted patients.
  • Development of various medications for psychological disorders.

1950s Onwards: Deinstitutionalization Movement

  • Shift towards community-based care and rehabilitation.
  • Reduction of psychiatric hospitals, leading to gaps in community support systems.
  • Emphasis on recovery-oriented care and destigmatization of mental health.

Cultural Context in Mental Health

  • Recognition that the historical context is Eurocentric.
  • Other cultures have maintained long-standing practices addressing mental health and well-being.

The DSM: Diagnostic and Statistical Manual of Mental Disorders

Publication History

  • 1952: First edition published by the American Psychiatric Association (APA).
  • Subsequent editions (1968, 1980) improved diagnostic criteria; 1980 marked the introduction of explicit criteria.
  • 2013: Fifth edition introduced concepts of spectrum disorders and updated diagnostic details.

Structure of the DSM

  • Contains 19 categories and nearly 300 disorders, including:
    • Neurodevelopmental disorders (e.g., ADHD, autism)
    • Psychotic disorders (e.g., schizophrenia)
    • Mood disorders (e.g., depression)
    • Anxiety disorders (e.g., panic disorder)
    • Personality disorders, etc.

Key Components of DSM Disorders

  • Diagnostic Criteria: Specific symptoms required for diagnosis.
  • Prevalence: Information on how common the disorder is in the population.
  • Development and Course: Typical progression of the disorder.
  • Risk and Prognostic Factors: Influences on the disorder's severity and onset.
  • Cultural and Gender Issues: Differences in how disorders manifest across societies.
  • Functional Consequences: Impacts of the disorder on daily life.
  • Comorbidity: Presence of more than one disorder simultaneously.

Understanding Schizophrenia

General Characteristics

  • Schizophrenia is widely misunderstood; commonly associated only with hallucinations but involves more complex symptoms.
  • Negative symptoms include social withdrawal and reduced emotional expression.
  • Historically viewed with various misconceptions.

Developmental Course of Schizophrenia

  • Emerges typically between late teens and mid-thirties.
  • Symptoms cycle through three phases:
    • Prodromal Phase: Subtle changes in thoughts and emotions; often dull affect and social withdrawal.
    • Active Phase: Manifestation of full-blown psychotic symptoms, including hallucinations.
    • Residual Phase: Symptoms lessen, still show some emotional disturbances but less severe.

Genetic and Environmental Influences

  • Neurodevelopmental Hypothesis:
    • Suggests disruptions during neurological development due to factors like maternal stress, malnutrition, and birth complications.
  • Genetic markers indicate involvement of over 100 genes related to schizophrenia, complicating understanding due to interactions with other disorders.
  • Environmental Risk Factors include:
    • Trauma
    • Chronic stress
    • Familial emotional expressiveness
    • Cannabis use

Cultural Variations

  • Symptoms of schizophrenia can vary by culture, with some behaviors considered typical in one culture being seen as pathological in another.
  • Example: The Māori view schizophrenia as a spiritual experience, differing from western interpretations.

Conclusion

  • Overall, clinical psychology is a complex field with historical context, cultural considerations, and evolving diagnostic frameworks guiding understanding and treatment of psychological disorders.
  • The DSM serves as a key resource but is subject to ongoing debates regarding its definitions, criteria, and implications for diagnosis and treatment in diverse populations.