Abnormal Psychology: Assessment, Classification, and Treatment

Abnormal Psychology

Introduction

Abnormal psychology is the scientific study of abnormal behavior, thoughts, and emotions. It seeks to understand the nature, causes, and treatment of mental disorders, integrating perspectives from biology, psychology, and society.

Chapter 1 Overview

• Methods of Assessment

• Classification

• Treatment

• Psychology & Society

Methods of Assessment

Clinical Interviews

Clinical interviews are the most commonly used method of assessment in abnormal psychology. They involve gathering information about the client's presenting complaints, the onset and course of symptoms, and the impact on daily functioning.

• Structured Interviews: Use a standardized set of questions to ensure reliability and consistency across clients. Example: Structured Clinical Interview for DSM Disorders (SCID).

• Semi-Structured Interviews: Follow a general outline but allow flexibility in questioning.

• Mental Status Examination: Assesses appearance, behavior, thought processes, mood, cognition, and insight.

Psychological Testing

Psychological tests are standardized tools used to assess various aspects of a person's psychological functioning.

• Intelligence Tests: Measure intellectual abilities. Example: Stanford-Binet Intelligence Scale, Wechsler Scales.

• Personality Tests: Assess personality traits and psychopathology. Example: Minnesota Multiphasic Personality Inventory (MMPI).

• Projective Tests: Use ambiguous stimuli to uncover unconscious processes. Examples: Rorschach Inkblot Test, Thematic Apperception Test (TAT).

Formula for IQ:

$IQ = \frac{\text{Mental Age}}{\text{Chronological Age}} \times 100$

Neuropsychological and Physiological Assessment

• Neuropsychological Tests: Assess cognitive, motor, and perceptual skills to detect brain dysfunction. Example: Bender Visual Motor Gestalt Test.

• Physiological Measures: Include EEG, GSR, EMG, and brain imaging techniques (CT, MRI, PET, fMRI).

Behavioural and Cognitive Assessment

• Behavioural Assessment: Involves direct observation, self-monitoring, and functional analysis (identifying antecedents, behaviors, and consequences).

• Cognitive Assessment: Measures thoughts, beliefs, and attitudes using questionnaires and thought logs.

Classification of Abnormal Behaviour

The DSM System

The Diagnostic and Statistical Manual of Mental Disorders (DSM) is the primary system for classifying mental disorders in North America. It provides standardized criteria for diagnosis and is regularly updated to reflect new research.

• DSM-5: The current edition, published in 2013, incorporates dimensional approaches and new diagnoses (e.g., prolonged grief disorder).

• ICD: The International Classification of Diseases, used globally and published by the World Health Organization.

Key Features:

• Disorders are classified based on symptom patterns and clinical significance.

• Diagnostic criteria require a minimum number of symptoms and significant distress or impairment.

• Emphasizes person-first language and cultural considerations.

Reliability and Validity in Classification

• Reliability: Consistency of a diagnostic system across time and clinicians.

• Validity: The extent to which a diagnosis accurately represents a disorder and predicts outcomes (e.g., treatment response).

Perspectives on Abnormal Behaviour

Psychodynamic Perspective

• Originated with Freud; emphasizes unconscious conflicts and childhood experiences.

• Abnormal behavior results from unresolved internal conflicts.

Behavioural Perspective

• Focuses on observable behavior and the role of learning (classical and operant conditioning).

• Abnormal behavior is learned through reinforcement and punishment.

Humanistic Perspective

• Emphasizes personal growth, self-actualization, and free will (Maslow, Rogers).

• Abnormal behavior arises when individuals are unable to achieve their potential due to lack of unconditional positive regard.

Cognitive-Behavioural Perspective

• Focuses on the interplay between thoughts, emotions, and behaviors.

• Distorted thinking patterns contribute to abnormal behavior.

Sociocultural Perspective

• Considers the impact of society, culture, and environment on mental health.

• Factors such as poverty, discrimination, and social norms influence the development and course of mental disorders.

Biopsychosocial and Diathesis-Stress Models

• Biopsychosocial Model: Integrates biological, psychological, and sociocultural factors.

• Diathesis-Stress Model: Proposes that mental disorders result from the interaction of a predispositional vulnerability (diathesis) and environmental stressors.

$\text{Disorder} = \text{Diathesis} + \text{Stress}$

Treatment of Abnormal Behaviour

Mental Health Professionals

• Psychiatrists: Medical doctors specializing in mental health; can prescribe medication.

• Psychologists: Hold doctoral degrees; provide assessment and psychotherapy.

• Social Workers, Counsellors, Psychotherapists: Provide support, therapy, and case management.

Major Treatment Approaches

• Psychodynamic Therapy: Focuses on unconscious processes and past experiences.

• Behaviour Therapy: Uses learning principles to modify maladaptive behaviors.

• Humanistic-Existential Therapy: Emphasizes self-exploration and personal growth.

• Cognitive-Behavioural Therapy (CBT): Targets dysfunctional thoughts and behaviors.

• Biological Treatments: Includes psychotropic medications, electroconvulsive therapy (ECT), and brain stimulation.

• Group and Couple Therapy: Provides support and addresses interpersonal issues.

Example: TIPP Skills for Emotional Regulation

• Temperature: Change body temperature (e.g., cold water, ice pack) to reduce emotional intensity.

• Intense Exercise: Engage in vigorous physical activity to manage strong emotions.

• Paced Breathing: Practice slow, controlled breathing (e.g., box breathing).

• Paired Muscle Relaxation: Tense and relax muscle groups to reduce stress.

Assessment Table: Types of Psychological Tests

Test Type	Purpose	Examples
Intelligence Tests	Assess intellectual functioning	Stanford-Binet, Wechsler Scales
Personality Tests	Assess personality traits and psychopathology	MMPI, NEO-PI
Projective Tests	Reveal unconscious processes	Rorschach, TAT
Neuropsychological Tests	Detect brain dysfunction	Bender-Gestalt, Luria-Nebraska

Summary

• Abnormal psychology integrates multiple perspectives to understand and treat mental disorders.

• Assessment and classification are foundational for accurate diagnosis and effective intervention.

• Treatment approaches are diverse, reflecting the complexity of mental health.