Step 1: Concept
Gordon Allport is known for his work on personality traits, particularly distinguishing between cardinal, central, and secondary traits.
Step 2: Meaning
Cardinal Traits: rare but very strong traits that dominate one's life. Central Traits: core characteristics that define an individual's personality. Secondary Traits: less significant traits that can vary depending on the situation.
Step 3: Analysis
[leftmargin=20pt, itemsep=3pt, topsep=4pt]
• A) Gordon Allport — correct, he is the theorist who proposed this trait classification.
• B) Thurston — known for factor analysis but not associated with these trait classifications.
• C) Freud — famous for psychoanalytic theory (id, ego, superego), not for trait theory.
• D) Maslow — renowned for his hierarchy of needs, not for personality trait theory.
Step 4: Conclusion
Gordon Allport is the correct theorist who classified personality traits into cardinal, central, and secondary types.
Final Answer: (A)