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Theories of Personality
Source: Kaplan & Sadock's Comprehensive Textbook of Psychiatry; Kaplan & Sadock's Synopsis of Psychiatry
Definition
Personality refers to the enduring, stable patterns of thinking, feeling, and behaving that characterize an individual and distinguish them from others. Personality theories attempt to explain how these patterns develop, are maintained, and influence behavior and psychopathology.
I. PSYCHOANALYTIC / PSYCHODYNAMIC THEORIES
1. Freudian (Classical Psychoanalysis) - Sigmund Freud (1856-1939)
Freud's theory is the most historically influential model of personality and forms the foundation for many subsequent theories.
Structural Model (Tripartite):
- Id - entirely unconscious; operates on the pleasure principle; source of all instinctual drives (libido and aggression)
- Ego - partly conscious; operates on the reality principle; mediates between id demands and external reality
- Superego - represents internalized moral standards and the ego ideal; source of guilt and self-criticism
Topographic Model:
- Conscious, Preconscious, Unconscious - with most psychologically significant material being unconscious
Psychosexual Stages of Development: Personality is shaped by progression through these stages. Fixation at any stage leads to characteristic adult personality traits:
| Stage | Age | Key Conflict | Fixation Result |
|---|
| Oral | 0-18 months | Feeding, oral stimulation | Dependency, pessimism, oral habits |
| Anal | 18 months - 3 years | Toilet training | Orderliness, obstinacy, parsimony (anal-retentive) |
| Phallic | 3-6 years | Oedipus/Electra complex | Vanity, recklessness, sexual problems |
| Latency | 6-12 years | Dormant sexuality | Social skills develop |
| Genital | 12+ years | Mature sexual relationships | Ideal adult integration |
Defense Mechanisms: The ego uses unconscious strategies (repression, projection, displacement, reaction formation, sublimation, rationalization) to manage anxiety arising from id-superego conflicts.
2. Adlerian Theory - Alfred Adler (1870-1937)
Adler diverged from Freud, rejecting the primacy of sexuality and the unconscious as the sole motivating force.
- Inferiority and Striving for Superiority: The cornerstone of Adler's theory is the concept of moving from a sense of inferiority (felt by all children when compared with adults) to a sense of mastery. This is the most important motivation in life.
- Individual Lifestyle: Each person develops a unique lifestyle - a pattern of behaviors, goals, and self-perceptions that gives direction to their life. Life goals are chosen and subject to change.
- Social Interest (Gemeinschaftsgefühl): The capacity to cooperate and contribute to society is a hallmark of mental health. Neurotic individuals have low social interest.
- Birth Order: Adler was among the first to systematically study birth order - first-borns tend to be conservative, middle children more socially oriented, youngest children most secure.
- Psychopathology: Emotional disorders result from mistaken lifestyles - false self-views, inappropriate goals, and blocked social interest. Neurosis = blocked from life goals while maintaining some social interest; psychosis = complete loss of social interest.
- Therapy (Individual Psychology): Focused on correcting mistaken self-views, modifying life goals, and building social interest rather than uncovering unconscious conflict.
3. Jungian Theory - Carl Gustav Jung (1875-1961)
Jung developed an elaborate metapsychology as complex as Freud's but diverging sharply in emphasis.
Structure of the Psyche:
- Ego - mediates conscious life, bridges intrapsychic and external worlds
- Personal Unconscious - contains complexes (clusters of emotionally charged ideas tied to specific experiences)
- Collective Unconscious - unique to Jung; a deeper layer shared across humanity, containing archetypes (universal inherited models of experience - the Great Mother, the Shadow, the Anima/Animus, the Self)
Key Concepts:
- Complexes - groups of unconscious ideas associated with emotionally toned experiences; they are bipolarity (e.g., good father/bad father), self-perpetuating, and can be projected onto others
- Archetypes - genetically determined intrinsic models such as the Persona (social mask), Shadow (repressed dark side), Anima/Animus (feminine aspect in men, masculine in women), and the Self (the totality of the psyche)
- Psychological Types: Jung classified people by two attitude types (introversion vs. extraversion) and four functions (thinking, feeling, sensing, intuiting), giving 8 psychological types - the foundation for modern personality typology
- Individuation: The lifelong process of integrating all aspects of the personality into a harmonious whole - the primary goal of human development
Boundary Permeability: Unlike Freud, Jung saw the boundary between conscious and unconscious as far more permeable, and placed great emphasis on non-verbal stimulation (art, music, spirituality) in personality.
4. Reichian Theory - Wilhelm Reich (1897-1957)
Reich elaborated on Freudian character types by adding behavioral and physical dimensions.
- Character Armor: Specific behavioral traits that defend against internal and external dangers. These are involuntary, repetitive, ego-syntonic behaviors that prevent emergence of repressed impulses. Character armor also manifests physically in the voluntary musculature as characteristic postures (clenched jaw, rigid back).
- Character Types:
- Hysterical character - labile, sexually suggestive movements, superficial, highly suggestible
- Compulsive character - tense, rigid, indecisive, distrusting, blockage between thought and feeling
- Phallic-narcissistic - cold, provocative, seeks power, good erectile potency but poor intimacy
- Masochistic character - self-defeating, complaining, provokes others; pleasure itself becomes painful
- Treatment (Vegetotherapy/Bioenergetics): Reich worked face-to-face with patients, physically relaxing character armor before proceeding to analysis of the unconscious - the first systematic attention to nonverbal cues in therapy.
II. BEHAVIORAL / LEARNING THEORIES
5. Radical Behaviorism - B. F. Skinner (1904-1990)
Skinner was perhaps the most influential psychologist of the 20th century. His core concept was operant conditioning - behaviors are a function of the organism's history of reinforcement.
- Skinner rejected the existence of the mind entirely, preferring to study the "empty organism"
- Personality = a repertoire of behavior imparted by an organized set of contingencies: "a self or personality is at best a repertoire of behavior imparted by an organized set of contingencies"
- Individual differences are explained by different reinforcement histories
- Behaviors can be shaped, maintained, or eliminated through reinforcers, punishers, and schedules of reinforcement
- Criticism: Rejected by humanistic psychologists (who emphasize individual choice) and trait psychologists (who see behavioral consistency transcending reinforcement environment)
6. Social Learning Theory - Rotter & Bandura
Julian Rotter (1916-2014):
- Human behavior is guided not only by history of reinforcement but also by plans, goals, and expectations of success
- Locus of Control: Individuals with a history of success develop an internal locus of control (belief they control outcomes); those with failure develop an external locus of control (outcomes depend on luck or powerful others)
- One of the most widely studied variables in personality psychology
Albert Bandura (1925-2021):
- Introduced observational learning (modeling) - people learn by watching others, not just through direct reinforcement
- Self-efficacy: The belief in one's capacity to execute behaviors necessary to achieve goals is a central determinant of personality and behavior
- Reciprocal determinism: Behavior, personal factors, and the environment all interact and influence each other - individuals both shape and are shaped by their environments
- Low self-efficacy in social situations leads to avoidance, failure to develop social skills, and perpetuation of maladaptive patterns
III. TRAIT THEORIES
7. Allport's Trait Theory - Gordon Allport (1897-1967)
- Personality is composed of traits - consistent dispositions to behave in particular ways across situations
- Classified traits into: Cardinal traits (dominant, pervasive), Central traits (6-12 major characteristics), Secondary traits (situational, peripheral)
- Emphasized the uniqueness of the individual (idiographic approach)
8. Eysenck's Three-Factor Model - Hans Eysenck (1916-1997)
Eysenck used factor analysis to identify three core personality dimensions:
- Extraversion-Introversion - degree of social engagement and arousal-seeking
- Neuroticism-Stability - emotional reactivity and susceptibility to negative emotions
- Psychoticism - tendency toward antisocial, impulsive, and cold behavior
- Psychopathology Link: Introverts are easily conditioned and prone to depressive, anxious, and obsessive-compulsive disorders. Extreme extraverts resist conditioning and are prone to hysterical and psychopathic disorders.
- His model bridges learning theory and trait psychology
9. The Big Five (Five-Factor Model) - Costa & McCrae
The most empirically supported trait model, identifying five core dimensions:
| Factor | Description |
|---|
| O - Openness to Experience | Curiosity, imagination, creativity |
| C - Conscientiousness | Organization, dependability, self-discipline |
| E - Extraversion | Sociability, assertiveness, positive emotion |
| A - Agreeableness | Cooperation, trust, altruism |
| N - Neuroticism | Emotional instability, anxiety, moodiness |
These traits are considered largely heritable and stable across the lifespan. The Big Five is the dominant framework in modern personality research.
IV. HUMANISTIC / EXISTENTIAL THEORIES
10. Carl Rogers (1902-1987) - Person-Centered Theory
- Self-concept is at the center of personality - the individual's perception of themselves
- Actualizing tendency: Every person has an innate drive toward growth, fulfillment, and self-actualization
- Conditions of Worth: When parents give love conditionally, children internalize external standards ("conditions of worth") that distort their self-concept and block authentic experience
- Congruence vs. Incongruence: Mental health = congruence between the real self and ideal self; psychopathology = incongruence
- Therapy: Client-centered therapy requires the therapist to provide unconditional positive regard, empathy, and genuineness to allow the client to reconnect with their actualizing tendency
11. Abraham Maslow (1908-1970) - Hierarchy of Needs
- Proposed a hierarchical model of motivation - lower needs must be met before higher ones become motivating:
- Physiological needs (food, shelter)
- Safety and security
- Love and belonging
- Esteem (self-worth, achievement)
- Self-actualization (realizing full potential)
- Healthy personality is characterized by self-actualization - a state of full functioning, creativity, spontaneity, and peak experiences
- Maladjustment = deficiency motivation (preoccupation with unmet lower needs)
12. Viktor Frankl (1905-1997) - Existential/Logotherapy
- Personality is organized around the search for meaning in life
- Human beings have a unique capacity for self-transcendence (placing others' well-being above self-interest) and self-distancing (humor, perspective-taking)
- Existential vacuum: The inability to find meaning leads to existential neurosis and psychopathology
- Logotherapy: Helps patients find meaning even in suffering; therapeutic techniques include paradoxical intention and dereflection
V. NARRATIVE THEORY
13. Dan McAdams (1954-) - Life Narrative Model
Personality operates on three levels:
- Level 1 - Traits: Abstract, enduring tendencies (the Big Five)
- Level 2 - Personal Concerns: Goals, plans, motivations that are time- and place-specific
- Level 3 - Life Narrative: The story a person tells about themselves to give unity and purpose to life
A common American narrative theme is the "redemptive self" - protagonist faces obstacles but eventually triumphs - which appears to inspire a productive and caring life. Personality is not a static list of traits but a dynamic, evolving story.
VI. BIOLOGICAL / TEMPERAMENT THEORIES
- Biological models view personality as rooted in heritable temperament - inborn, stable individual differences in emotional reactivity, activity level, and self-regulation
- Studies of identical twins reared apart show substantial heritability for all Big Five traits (~40-60%)
- Neurobiological correlates: Extraversion linked to dopaminergic reward circuits; Neuroticism linked to amygdala reactivity; Psychoticism linked to serotonergic dysregulation
Summary Comparison Table
| Theory | Key Theorist | Core Concept | Personality Shaped By |
|---|
| Classical Psychoanalysis | Freud | Psychosexual stages, unconscious conflict | Early childhood fixations |
| Individual Psychology | Adler | Inferiority → mastery, lifestyle | Social interest, birth order |
| Analytical Psychology | Jung | Archetypes, individuation | Collective unconscious, psyche integration |
| Radical Behaviorism | Skinner | Operant conditioning | Reinforcement history |
| Social Learning | Bandura/Rotter | Self-efficacy, locus of control | Observation, cognition, environment |
| Trait Theory | Eysenck, Costa & McCrae | Factor-derived traits, Big Five | Heredity + environment |
| Person-Centered | Rogers | Self-concept, actualization | Conditions of worth |
| Humanistic | Maslow | Hierarchy of needs | Fulfillment of needs |
| Existential | Frankl | Search for meaning | Meaning, free will |
| Narrative | McAdams | Life story | Self-constructed narrative |
Clinical Relevance
- Psychoanalytic theories underpin psychodynamic psychotherapy and understanding personality disorders
- Behavioral theories form the basis for CBT, exposure therapy, and behavior modification
- Trait theories (Big Five) guide personality assessment tools and research into personality disorders
- Humanistic theories underpin person-centered counseling and motivational interviewing
- Existential theories are used in palliative care, existential therapy, and meaning-centered interventions
- Understanding personality theories aids in formulating the doctor-patient relationship and predicting treatment adherence
Sources: Kaplan & Sadock's Comprehensive Textbook of Psychiatry (10th ed.); Kaplan & Sadock's Synopsis of Psychiatry