Explores how psychologists identify and diagnose psychological disorders in real people.
Stresses that what feels “normal” or “unsettling” often depends on what we are used to in our own homes, cultures, and communities.
Emphasizes cultural context, individual personality differences, and workplace or family norms when judging behavior.
Uses a detailed case study (Edith) to show how everyday stress can become maladaptive and qualify as a diagnosable disorder.
Explains that the DSM is a key diagnostic manual but only one tool among many that professionals use.
Introduces five explanatory perspectives on the causes (etiology) of psychological disorders and how they inform treatment choices.
Key Concepts
Psychological Disorder
Pattern of thoughts, emotions, or behaviors that causes significant emotional distress.
Impairs a person’s ability to function in daily life (work, relationships, self-care).
Maladaptive Behavior
Behaviors or reactions that once may have helped but now interfere with tasks or health.
Example: Worry and planning that were once helpful become so intense that they prevent rest, concentration, or healthy eating.
Cultural Relativity
Definitions of “abnormal” vary by culture, religion, and social norms.
Example: Skipping meals might be seen as unhealthy or disordered in one culture, but fasting for religious reasons is admired and expected in another.
Psychologists must distinguish between culturally valued practices and genuine symptoms.
Individual Differences
People differ in temperament, coping styles, and personality quirks.
A behavior may be a harmless quirk for one person but a serious problem for another, depending on distress and impairment.
Comorbidity
Presence of two or more disorders at the same time in the same person.
Common example: Substance use disorder occurring together with major depressive disorder.
Case Study: Edith (Example)
Background and Personality
Edith has always been cautious, detail-oriented, and very organized.
She constantly thinks through “what if” scenarios and keeps elaborate plans, including backup and “backup-backup” plans.
In the past, these traits helped her succeed, even though she sometimes felt overwhelmed by worry.
Friends and family reassured her that occasional anxiety is normal and shared by many people.
Workplace Context and Trigger
Edith starts a demanding, high-pressure job in politics where stress and long hours are common.
Her meticulous work style is praised and rewarded, so her anxious planning initially seems adaptive at work.
However, the number of possible “what ifs” increases dramatically, and she begins to feel stressed every day.
Symptoms and Maladaptiveness
Persistent personal distress beyond normal job stress.
Poor sleep and frequent racing, upsetting thoughts (e.g., fear of being fired every day).
Reduced appetite and a poor diet, partly from lack of hunger and partly from new stomach pain.
Her helpful traits (hard work, organization) now make it harder to relax or cope with daily demands.
Assessment and Diagnosis
Edith seeks help from a therapist when she notices the distress and disruption in her life.
The therapist evaluates whether her symptoms fit her usual personality and job culture or represent something more serious.
Because the symptoms cause significant distress and interfere with functioning, Edith is diagnosed with Generalized Anxiety Disorder (GAD).
Treatment Options and Planning
Therapist and Edith discuss evidence-based options:
Ongoing psychotherapy (e.g., cognitive or behavioral techniques).
Possible medication to address biological aspects of anxiety.
Changes to daily habits, such as sleep routines, eating patterns, and stress-management strategies.
The therapist helps her distinguish between enduring personality traits and symptoms of a disorder that can be treated.
Treatment may require trying different professionals or approaches before finding the best fit.
The DSM (Diagnostic and Statistical Manual)
Purpose and Content
Standard reference manual for diagnosing mental disorders.
Lists nearly 300 specific mental illnesses, each with clearly defined diagnostic criteria.
Groups disorders into categories (e.g., mood, anxiety, substance-related) for easier comparison.
Notes how common a disorder is and which disorders often appear together (comorbidity).
History and Revisions
First published in 1952; updated repeatedly as research and cultural attitudes change.
Recent version mentioned: DSM-5-TR (2022).
Older editions labeled homosexuality as a mental disorder; later editions removed it entirely, reflecting new evidence and social understanding.
DSM-5 updated language, such as changing “desired gender” to “experienced gender” in discussions of gender dysphoria.
Newer versions can specify subtypes, such as “major depressive disorder with seasonal pattern,” to better guide specific treatments.
Functions in Practice
Provides shared terminology so psychologists, psychiatrists, and other professionals can communicate clearly.
Helps clinicians recognize patterns of symptoms across different individuals and settings.
Guides differential diagnosis, helping distinguish between similar conditions.
Serves as an important but incomplete tool; real-world judgment also requires cultural, social, and individual context.
Five Explanatory Perspectives (Etiology)
Biological Perspective
Views psychological disorders as rooted in brain physiology, genetics, or chemical imbalances.
Example for Edith: A psychiatrist might see her anxiety as linked to neurotransmitter levels and prescribe medication.
Psychodynamic Perspective
Emphasizes unconscious conflicts and childhood experiences as causes of current symptoms.
Edith might explore early relationships or past fears that contribute to her present anxiety.
Behavioral Perspective
Focuses on learned behaviors and responses to the environment.
Maladaptive thoughts and habits are seen as learned patterns that can be changed.
Edith may practice pausing during stressful events, using relaxation or breathing exercises to replace automatic anxious responses.
Cognitive Perspective
Attributes disorders to distorted thinking and biased interpretations of events.
Edith’s catastrophic thoughts (“If I make a mistake, I’ll be fired”) are identified and challenged.
She might use replacement statements like “Making a mistake is disappointing, not a catastrophe.”
Biopsychosocial Perspective
Integrates biological, psychological, and social or cultural factors.
Recognizes that genetics, learning history, work culture, family expectations, and broader society all interact.
Edith’s plan might combine medication, psychotherapy, and lifestyle changes, tailored to her background and job.
Diagnosis Considerations
Psychologists evaluate:
Cultural and religious norms (e.g., fasting vs. disordered eating).
Workplace and family expectations and stress levels.
Individual temperament and long-standing personality traits.
Diagnosis depends on:
Degree of emotional distress.
Level of functional impairment in work, relationships, and self-care.
Patterns such as comorbidity informed by DSM data.
Ongoing scientific research leads to new categories, refined criteria, and more effective treatments over time.
Treatment Principles
Aim to match treatments to likely causes when possible (e.g., medication for strong biological components, therapy for cognitive or behavioral patterns).
Often use combined approaches for complex or chronic conditions.
Treatment is individualized:
Considers culture, values, family situation, and practical constraints.
May evolve as symptoms change or as new evidence emerges.
Clinicians frequently draw from several perspectives at once when designing treatment plans.
Key Terms and Definitions
Psychological Disorder: Mental condition involving distress and impaired functioning.
Maladaptive: Behavior that interferes with daily life or health.
Comorbidity: Co-occurrence of two or more disorders in the same individual.
Etiology: Study of the causes and contributing factors of disorders.
DSM: Diagnostic and Statistical Manual of Mental Disorders, a standardized reference for mental health diagnoses.
Action Items / Next Steps (If Present)
If experiencing ongoing distress or impairment, seek assessment from a qualified mental health professional.
When evaluating behavior, consider cultural norms, work or school expectations, and personality history.
Discuss multiple treatment options, including therapy, medication, and lifestyle adjustments.
Remember that there is a wide spectrum of healthy, adaptive behavior, and professional help is available when you move outside that range.
Summary / Closing Points
Diagnosing psychological disorders requires attention to patterns, distress, impairment, culture, and personality.
The DSM provides structured criteria and shared language but is complemented by clinical judgment and multiple explanatory perspectives.
Biological, psychological, and social factors interact to shape mental health; professionals use this knowledge to support people in regaining comfort, functioning, and quality of life.