2.6. Theories of Personality

1. Type Theories i. Hippocrates' Four Humours
   • Sanguine (cheerful)
   • Choleric (irritable)
   • Melancholic (sad)
   • Phlegmatic (calm) ii. Carl Jung’s Personality Types
   • Introverts: Reserved, reflective
   • Extraverts: Outgoing, sociable iii. Sheldon’s Somatotypes
   • Endomorph: Sociable, relaxed
   • Mesomorph: Active, assertive
   • Ectomorph: Quiet, sensitive

Type theories categorize people based on certain classifications. Hippocrates' theory divides individuals into four types based on body fluids: sanguine individuals are cheerful and sociable, choleric are irritable and quick-tempered, melancholic are sad and pensive, and phlegmatic are calm and stable. Carl Jung introduced the concepts of introverts and extraverts; introverts tend to be reserved and thoughtful, while extraverts are more outgoing and eager to engage with others. Sheldon identified three body types: endomorphs, who are sociable and relaxed; mesomorphs, who are active and assertive; and ectomorphs, who are sensitive and quiet.

Imagine you are at a gathering with different friends. One friend is always laughing and engaging with everyone (sanguine), while another sits quietly in the corner, enjoying the view (introvert), and a third is busy organizing games for everyone (mesomorphic). Each friend’s personality type influences how they interact in social situations, making each gathering feel unique.

2. Trait Theories i. Gordon Allport
   • Cardinal traits: Dominate a person’s life.
   • Central traits: General characteristics (e.g., honesty).
   • Secondary traits: Situational traits. ii. Raymond Cattell
   • Used factor analysis to identify 16 Personality Factors (16PF). iii. Hans Eysenck
   • Three dimensions: o Extraversion–Introversion o Neuroticism–Stability o Psychoticism–Sociability iv. The Big Five Model (OCEAN)
   • Openness to Experience
   • Conscientiousness
   • Extraversion
   • Agreeableness
   • Neuroticism

Trait theories focus on identifying and measuring individual personality characteristics, or traits. Gordon Allport proposed three types of traits: cardinal traits, which are the defining features of a person; central traits, which are general characteristics that influence behavior; and secondary traits, which are specific to certain situations. Raymond Cattell developed the 16 Personality Factors model through factor analysis, discovering key traits that can describe various aspects of personality. Hans Eysenck proposed three dimensions of personality that relate to general behavior patterns. Finally, the Big Five Model encapsulates five core traits—Openness, Conscientiousness, Extraversion, Agreeableness, and Neuroticism—that cover a wide range of human variability.

Consider how you describe people you know. You might label a friend as organized and hardworking (conscientious), or a family member as adventurous and open to new experiences (openness). Just like a recipe includes specific ingredients that define the dish, these traits combine to create the unique flavor of each person’s personality.

3. Psychoanalytic Theory (Sigmund Freud) Structure of Personality
   • Id: Instinctual desires; pleasure principle
   • Ego: Reality-based; balances Id and Superego
   • Superego: Moral conscience Psychosexual Stages
   1. Oral (0–1 years)
   2. Anal (1–3 years)
   3. Phallic (3–6 years)
   4. Latency (6–12 years)
   5. Genital (12+ years) Defense Mechanisms
   • Repression, projection, denial, regression, displacement

Psychoanalytic theory posits that personality is formed through the interaction of three components: the Id, Ego, and Superego. The Id represents our primal instincts and desires seeking immediate pleasure, while the Ego negotiates between these instincts and the real world, making practical decisions. The Superego embodies moral values and social norms, acting as our conscience. Freud also proposed five psychosexual stages of development, suggesting that experiences in these stages can shape adult personality and behavior. Additionally, Freud identified defense mechanisms, subconscious strategies our minds use to protect us from anxiety, such as repression (pushing away painful thoughts) and projection (attributing our feelings to others).

Imagine planning a party. Your Id might insist on serving only your favorite food, ignoring guests' preferences, while your Superego insists on being considerate and inviting. The Ego tries to find a compromise, perhaps offering a variety of options. This internal struggle mirrors Freud's structure of personality; different thoughts and feelings work against each other as they battle for dominance in shaping your decisions.

4. Humanistic Theory i. Abraham Maslow
   • Hierarchy of Needs: Self-actualization at the top. ii. Carl Rogers
   • Emphasized the self and self-concept.
   • Congruence between real self and ideal self leads to well-being.

Humanistic theory focuses on the inherent goodness and potential of individuals. Abraham Maslow introduced the hierarchy of needs, suggesting that individuals progress through a series of stages culminating in self-actualization, where one realizes their full potential. Carl Rogers emphasized the importance of the self-concept—the idea of who we think we are—and argued that well-being arises when there is alignment (congruence) between our real self and our ideal self. If one's self-image aligns closely with their aspirations, they experience greater satisfaction and fulfillment.

Think about climbing a mountain. At the base (basic needs like food and safety), you prepare for the climb. As you ascend, you tackle more complex challenges, like your education and career (psychological needs). Finally, when you reach the peak—self-actualization—you feel accomplished and at peace with who you are, symbolizing the attainment of your dreams and aspirations.

5. Social-Cognitive Theory i. Albert Bandura
   • Observational learning (modeling)
   • Reciprocal determinism (interaction of behavior, personal factors, and environment) ii. Julian Rotter
   • Locus of control: Internal vs. External

Social-Cognitive theory emphasizes the interactions between individual behavior, personal factors (like thoughts and feelings), and environmental influences. Albert Bandura highlighted the concept of observational learning, where individuals learn behaviors by observing others. Reciprocal determinism suggests that behavior influences and is influenced by personal and environmental factors—a continual feedback loop. Julian Rotter introduced the locus of control concept, which determines how people perceive the control they have over their life events: those with an internal locus believe they can influence outcomes, while those with an external locus attribute outcomes to external forces beyond their control.

Consider a student watching a successful debater. They might mimic the debater's strategies and eventually develop their own style based on these observations. If the student believes their effort can lead to success, they have an internal locus of control; if they attribute their performance solely to luck or fate, they have an external locus. Understanding this helps illustrate how personal agency can shape outcomes in life.

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