---

Personality psychology studies the consistent patterns of thinking, feeling, and behaving that make people unique—while also explaining why people can act similarly in certain situations.

It asks questions like:

• Why are some people naturally outgoing while others are more reserved?
• Why do some people handle stress well and others struggle?
• How much of personality is inherited vs learned?
• Can personality change over time?

---

Foundational Figures

Gordon Allport (1897–1967)

Often called the father of personality psychology.

Key contributions:

• Proposed that personality is made up of traits—stable characteristics.
• Distinguished between:
  • Cardinal traits: dominant traits shaping nearly all behavior (e.g., extreme ambition)
  • Central traits: core characteristics (kind, honest, outgoing)
  • Secondary traits: more situational/preferences (likes jazz, dislikes crowds)

His big idea: people are unique, and psychology should study the individual—not just groups.

---

Carl Jung (1875–1961)

Founder of Analytical Psychology.

Major concepts:

• Collective unconscious: shared psychological inheritance of humanity.
• Archetypes: universal symbolic patterns:
  • Hero
  • Mother
  • Shadow
  • Wise old man
• Introduced introversion and extraversion as personality dimensions.

His work influenced tools like the Myers-Briggs Type Indicator.

---

Sigmund Freud (1856–1939)

Founder of psychoanalysis.

Core ideas:

• Personality shaped by the unconscious mind.
• Structure of personality:
  • Id = instinct/desire (“I want it now”)
  • Ego = reality manager
  • Superego = morality/conscience

Example:
Want cake (Id), know you’re dieting (Superego), negotiate “one slice” (Ego).

Also introduced defense mechanisms:

• denial
• projection
• repression
• displacement

Many original claims are debated today, but his influence remains enormous.

---

Core Model: Big Five (OCEAN)

The most widely accepted modern trait model.

O — Openness to Experience

High:

• imaginative
• curious
• creative

Low:

• conventional
• prefers routine

Example: enjoys travel, abstract ideas, art.

---

C — Conscientiousness

High:

• organized
• disciplined
• reliable

Low:

• impulsive
• disorganized

Strong predictor of success in school/work.

---

E — Extraversion

High:

• sociable
• energetic
• assertive

Low (introversion):

• reflective
• quiet
• reserved

Important: introversion ≠ shyness.

---

A — Agreeableness

High:

• compassionate
• cooperative
• trusting

Low:

• skeptical
• competitive
• blunt

---

N — Neuroticism

High:

• emotionally reactive
• anxious
• stress-sensitive

Low:

• calm
• emotionally stable

---

Major Approaches to Personality

---

1. Trait Approach

Focus: What traits do people have?

Examples:

• Big Five
• Allport
• Raymond Cattell

Strength:

• measurable
• useful in research

Weakness:

• explains what, not always why

---

2. Biological Approach

Focus: How biology shapes personality

Looks at:

• genetics
• brain systems
• hormones
• neurotransmitters

Example:
Twin studies show ~40–60% of personality traits may be heritable.

Related concepts:

• temperament in infants
• dopamine and reward-seeking
• amygdala and fear sensitivity

---

3. Psychodynamic Approach

(Freud, Jung)

Focus:

• unconscious motives
• childhood experiences
• internal conflict

Example:
Someone fears abandonment because of early attachment disruption.

Strength:

• deep insight

Weakness:

• harder to scientifically test

---

4. Humanistic Approach

Key figures:

• Carl Rogers
• Abraham Maslow

Focus:

• personal growth
• meaning
• free will

Concepts:

• self-actualization
• unconditional positive regard

Question asked:
“What helps people thrive?”

---

5. Social-Cognitive Approach

Key figure:

• Albert Bandura

Focus:

• personality develops through interaction of:
  • thoughts
  • behavior
  • environment

Bandura’s concept:
Reciprocal determinism:
you shape your environment, and it shapes you.

Example:
A confident person seeks opportunities → gains success → becomes more confident.

---

Measurement Tools

---

Self-report inventories

Most common.

Examples:

• Big Five tests
• Minnesota Multiphasic Personality Inventory (MMPI)

Pros:

• fast
• scalable

Cons:

• people may answer inaccurately

---

Behavioral observation

Watching real behavior.

Example:
How someone acts during conflict.

Pros:

• more objective

Cons:

• time intensive

---

Clinical interviews

Used in therapy/assessment.

Explores:

• history
• patterns
• emotional themes

Useful in diagnosis and treatment.

---

Applications

---

Mental Health

Understanding:

• anxiety patterns
• trauma responses
• personality disorders

Examples:
Borderline Personality Disorder
Narcissistic Personality Disorder

---

Workplace

Used for:

• hiring
• leadership development
• team building

Example:
High conscientiousness often predicts job reliability.

---

Education

Helps tailor:

• learning styles
• motivation strategies
• student support

Example:
Highly anxious students may need different teaching approaches.

---

Social Research

Used to study:

• relationships
• political behavior
• consumer choices
• social media use

---

Modern View of Personality

Today, psychologists generally agree:

• Personality is partly genetic
• environment matters
• personality is relatively stable, but can change
• major life events can reshape traits
• self-awareness can increase intentional change

In short:
Personality is not fixed—but it’s not infinitely flexible either.