Final answer:
Personality characteristics important for police work include authoritativeness, resilience, and vigilance, stemming from genetic factors and strengthened by professional training and culture. Personality tests are used to screen suitable candidates, suggesting that ideal traits can be identified and measured.
Step-by-step explanation:
Individual personality characteristics that contribute to the police working personality include traits such as authoritativeness, resilience, vigilance, skepticism, and a strong sense of duty. These characteristics typically come from a combination of inherited predispositions and environmental influences such as training, job experiences, and the broader law enforcement culture. Research like the Minnesota Study of Twins Reared Apart has shown that many personality traits have a genetic component, but the environment where one is raised and works also plays a significant role in shaping these characteristics.
For instance, the police work environment demands quick decision-making and authoritative action, which can foster these traits in officers' personalities. Candidates for police work are often screened using personality tests to assess suitability for these high-stress roles. Roberto, Mikhail, and Nat each possess different personality traits; however, a combination of Nat's thoughtfulness and trustworthiness with Mikhail's leadership and industriousness, tempered by professional training and awareness of the propensity for impulsiveness, would likely make an effective police officer.