People with this personality trait are limited to a very superficial analysis of interpersonal situations. A certain level of assertiveness is required to be an effective police officer. However, some candidates have an excessive need to dominate others. This is almost always a compensation for underlying feelings of inadequacy, and unfortunately, such people are often attracted to police work. The candidate who is immature and impulsive is of considerable concern.
Police work requires rapid judgements, often under situations of stress.
The immature person is far more likely to respond with poor judgement, rather than a rational response which considers a variety of alternatives. Police work is by its nature highly stressful. The applicant who is already under stress before joining the organisation is at risk of becoming a problem performer. Those who have poor stress tolerance and are also racially biased will be much more likely to unfairly discriminate against others. Two others cause the index of suspicion to rise dramatically higher.