Neuroticism (or Emotional Stability) represents people that can have a positive or negative behavior based on a level of to be calm or nervous, to be self-confident or depressed, and to be secure or insecure.
Openness to Experience (or Intellect) is people who like to new and try new situations, and it is attractive to novelty in their lives.
Conscientiousness - "Un-directedness" examines a person who is extremely oriented to be organized, focused, responsible, and reliable.
Agreeableness