16PF abbrev. The Sixteen Personality Factor Questionnaire, a popular personality scale that consists of 185 questions, such as ‘I get frustrated when people take too long to explain something’, each having three response categories—usually true , ?, false —and that yields scores on sixteen primary factors: Warmth, Reasoning, Emotional Stability, Dominance, Liveliness, Rule-consciousness, Social Boldness, Sensitivity, Vigilance, Abstractedness, Privateness, Apprehension, Openness to Change, Self-reliance, Perfectionism, and Tension. Scores on the primary factors can be combined to yield scores on five global factors: Extraversion, Anxiety, ...