INDEX
Topic: THEORIES OF PERSONALITY
S. Topic Page No.
No.
1 Index 1
2 2
Costa and McCrae’s Approach to Personality
3 5
Erik Erikson’s Theory of Personality
4 9
Hans Eysenck’s Theory of Personality
5 13
George Kelly’s Theory of Personality
6 17
Henry Murray
Costa and McCrae’s Approach to Personality
,Introduction
Personality refers to the relatively enduring patterns of thoughts, emotions, and behaviors
that distinguish individuals from one another and give consistency to their actions
across time and situations.
Costa and McCrae’s approach falls under the Trait Theory tradition, specifically within the
Five-Factor Model (FFM) framework of personality. Their contribution represents one of the
most empirically validated models in modern personality psychology.
I. Theoretical Background
The Five-Factor Model emerged from the lexical hypothesis, which assumes that the most
important personality characteristics become encoded in language. Through factor analysis of
trait descriptors, researchers consistently identified five broad dimensions.
Building upon earlier lexical studies (e.g., Tupes & Christal), Paul Costa and Robert McCrae
systematically refined and validated the Five-Factor Model through longitudinal research and
psychometric development.
They developed the NEO Personality Inventory (NEO-PI; later NEO-PI-R) to measure five
major personality domains.
II. The Five-Factor Model (Big Five)
Costa and McCrae proposed that personality is organized into five broad dimensions:
1. Neuroticism (N)
Tendency toward emotional instability, anxiety, moodiness, and vulnerability.
● High N: Prone to stress, worry, emotional reactivity.
● Low N: Calm, emotionally stable.
2. Extraversion (E)
Sociability, assertiveness, and positive emotionality.
● High E: Energetic, outgoing.
● Low E: Reserved, introverted.
3. Openness to Experience (O)
Intellectual curiosity, creativity, and preference for novelty.
● High O: Imaginative, open-minded.
● Low O: Conventional, traditional.
4. Agreeableness (A)
, Compassion, cooperation, and trust in others.
● High A: Kind, empathetic.
● Low A: Competitive, skeptical.
5. Conscientiousness (C)
Self-discipline, organization, goal-directed behavior.
● High C: Responsible, reliable.
● Low C: Impulsive, careless.
These traits are viewed as continuous dimensions, not categories
The Five-Factor Theory (FFT) System
Beyond identifying the traits, Costa and McCrae proposed a formal Five-Factor Theory
(FFT) to explain how these traits function within the human psyche. This system
distinguishes between biological "nature" and environmental "nurture."
● Basic Tendencies: These are the five personality traits themselves. They are
viewed as biologically based and endogenous. They are stable across the
lifespan and largely resistant to environmental influence.
● Characteristic Adaptations: These are the psychological structures that
develop as an individual interacts with the environment. They include acquired
skills, habits, attitudes, and relationships. While basic tendencies are stable,
characteristic adaptations change over time.
● Self-Concept: A sub-component of characteristic adaptations consisting of the
"self-schema." It is the individual’s own perception of their personality and life
history.
● Objective Biography: The actual events and experiences in a person’s life (the
"output" of the system).
● External Influences: The physical and social environment that interacts with
characteristic adaptations to produce behavior.
Key Propositions of the Theory
A. Biological Basis
Costa and McCrae argue that personality traits are primarily determined by genetics
and biological structures. They point to high heritability coefficients and the lack of
evidence that parenting styles significantly alter "Basic Tendencies."
B. The Stability of Traits
Topic: THEORIES OF PERSONALITY
S. Topic Page No.
No.
1 Index 1
2 2
Costa and McCrae’s Approach to Personality
3 5
Erik Erikson’s Theory of Personality
4 9
Hans Eysenck’s Theory of Personality
5 13
George Kelly’s Theory of Personality
6 17
Henry Murray
Costa and McCrae’s Approach to Personality
,Introduction
Personality refers to the relatively enduring patterns of thoughts, emotions, and behaviors
that distinguish individuals from one another and give consistency to their actions
across time and situations.
Costa and McCrae’s approach falls under the Trait Theory tradition, specifically within the
Five-Factor Model (FFM) framework of personality. Their contribution represents one of the
most empirically validated models in modern personality psychology.
I. Theoretical Background
The Five-Factor Model emerged from the lexical hypothesis, which assumes that the most
important personality characteristics become encoded in language. Through factor analysis of
trait descriptors, researchers consistently identified five broad dimensions.
Building upon earlier lexical studies (e.g., Tupes & Christal), Paul Costa and Robert McCrae
systematically refined and validated the Five-Factor Model through longitudinal research and
psychometric development.
They developed the NEO Personality Inventory (NEO-PI; later NEO-PI-R) to measure five
major personality domains.
II. The Five-Factor Model (Big Five)
Costa and McCrae proposed that personality is organized into five broad dimensions:
1. Neuroticism (N)
Tendency toward emotional instability, anxiety, moodiness, and vulnerability.
● High N: Prone to stress, worry, emotional reactivity.
● Low N: Calm, emotionally stable.
2. Extraversion (E)
Sociability, assertiveness, and positive emotionality.
● High E: Energetic, outgoing.
● Low E: Reserved, introverted.
3. Openness to Experience (O)
Intellectual curiosity, creativity, and preference for novelty.
● High O: Imaginative, open-minded.
● Low O: Conventional, traditional.
4. Agreeableness (A)
, Compassion, cooperation, and trust in others.
● High A: Kind, empathetic.
● Low A: Competitive, skeptical.
5. Conscientiousness (C)
Self-discipline, organization, goal-directed behavior.
● High C: Responsible, reliable.
● Low C: Impulsive, careless.
These traits are viewed as continuous dimensions, not categories
The Five-Factor Theory (FFT) System
Beyond identifying the traits, Costa and McCrae proposed a formal Five-Factor Theory
(FFT) to explain how these traits function within the human psyche. This system
distinguishes between biological "nature" and environmental "nurture."
● Basic Tendencies: These are the five personality traits themselves. They are
viewed as biologically based and endogenous. They are stable across the
lifespan and largely resistant to environmental influence.
● Characteristic Adaptations: These are the psychological structures that
develop as an individual interacts with the environment. They include acquired
skills, habits, attitudes, and relationships. While basic tendencies are stable,
characteristic adaptations change over time.
● Self-Concept: A sub-component of characteristic adaptations consisting of the
"self-schema." It is the individual’s own perception of their personality and life
history.
● Objective Biography: The actual events and experiences in a person’s life (the
"output" of the system).
● External Influences: The physical and social environment that interacts with
characteristic adaptations to produce behavior.
Key Propositions of the Theory
A. Biological Basis
Costa and McCrae argue that personality traits are primarily determined by genetics
and biological structures. They point to high heritability coefficients and the lack of
evidence that parenting styles significantly alter "Basic Tendencies."
B. The Stability of Traits
