Which of the following is/are NOT the factor(s) of the Big Five Personality model?
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Remember OCEAN: Openness, Conscientiousness, Extraversion, Agreeableness, Neuroticism. Traits like Optimism or Humility belong to other models or narrower constructs.
Step 1: Recall the Big Five traits
Big Five $=$ {Openness to Experience, Conscientiousness, Extraversion, Agreeableness, Neuroticism} (often remembered as OCEAN).
Step 2: Check each option
(A) Conscientiousness $\Rightarrow$ is a Big Five trait (not the answer).
(B) Optimism $\Rightarrow$ not one of the Big Five; it’s usually treated as an affective disposition.
(C) Humility $\Rightarrow$ not in Big Five; appears in HEXACO as “Honesty–Humility”.
(D) Extraversion $\Rightarrow$ is a Big Five trait. Final Answer: Options (B) and (C) are not Big Five factors.