Structural equation modeling was used to show that pilots were more ex — Neurosis

"Results indicated that personality traits prospectively predicted the decision to enter the military. People lower in agreeableness, neuroticism, and openness to experience during high school were more likely to enter the military after graduation. In addition, military training was associated with changes in personality. Compared with a control group, military recruits had lower levels of agreeableness after training. These levels persisted 5 years after training, even after participants entered college or the labor market."

"Neuroticism is a personality trait that lends itself to worry, anxiety and isolation. Highly neurotic people are more susceptible to mental illness than happy-go-lucky types; theyre also worse at high-risk professions like military aviation or bomb disposal, which require coolness under pressure. On the other hand, neuroticism seems linked to creative pursuits. Studies have found, for example, that artists and other creative people score higher on tests of neuroticism than people who arent in creative fields."

"Neuroticism is a dimension of personality that captures trait individual differences in the tendency to experience negative thoughts and feelings. Established theories explain neuroticism in terms of threat sensitivity, but have limited heuristic value since they cannot account for features of neuroticism that are unrelated to threat, such as creativity and negative psychological states experienced in benign, threat-free environments. We address this issue by proposing that neuroticism stems from trait individual differences in activity in brain circuits that govern the nature of self-generated thought (SGT). We argue our theory explains not only the association of neuroticism with threat sensitivity but also the prominence within the neurotic mind of representations of information that are unrelated to the way the world is right now, such as creativity and nonsituational ‘angst’."

"According to Perkins and his colleagues hypothesis, the brains of neurotic people might have a particularly persistent "default mode network," which is the circuit in the brain that becomes activated when people are doing nothing in particular. The medial prefrontal cortex is part of that system. If neurotic people have trouble turning off this thought-generating network, it might make them more prone to overthinking, dwelling and otherwise mulling over problems — real and imagined. This can be a problem because neurotic people also have oversensitive amygdalae. The tendency to become panicked over imagined problems can make neurotic people quite miserable, Perkins said. On the other hand, neuroticism could have benefits, he said. "If you dwell on problems for a long time, when those problems are not in front of you … it seems quite obvious that youll be more likely to come across a solution than one of those happy-go-lucky people who live their life in the moment," Perkins noted."

"The authors assessed whether neuroticism in emerging adulthood predicts mental disorders and self‐esteem in early adulthood after controlling for possible confounding variables. A sample of 69 male military conscripts was initially assessed at age 20 and again as civilians at age 35. The initial assessment included a psychiatric interview, objective indicators of conscript competence, an intellectual performance test, and neuroticism questionnaires. The follow‐up assessment included a Structured Clinical Interview for DSM‐IV (SCID; First, Spitzer, Gibbon, & Williams, 1996) and the Rosenberg Self‐Esteem Scale (Rosenberg, 1965). Neuroticism predicted future mental disorders and low self‐esteem beyond more objective indicators of adjustment. The results support the use of neuroticism as a predictor of future mental disorders, even over periods of time when personality is subject to change."