[Solved] Erotica and obscenity mean the same thing. Big Five Trait: A model that describes human personality through five broad dimensions: openness, conscientiousness, extraversion, agreeableness, and neuroticism. Factor Analysis: A statistical approach designed to uncover root variables that account for the observed correlations among a collection of variables. Personality Traits: Characteristic patterns of thoughts, feelings, and behaviors that make a person unique. Reactive Autonomic Nervous System: The part of the nervous system that responds involuntarily to stress and external stimuli.