Paul Costa and Robert McCrea

Definition

Paul Costa and Robert McCrae are psychologists who developed the Five-Factor Model (FFM) or "Big Five" model of personality traits.

Related terms

Neuroticism:

One of the Big Five factors; it involves tendencies towards emotional instability, anxiety, moodiness, irritability, and sadness.

Extraversion:

Another factor from Big Five; it refers to outgoingness, assertiveness, activeness, excitement-seeking behavior etc.

Openness to Experience:

A part from Big Five model; it includes traits like imagination, insightfulness, wide array interests etc.