Social influences on physical activity for establishing criteria leading to exercise persistence.

Despite well-documented health benefits from exercise, a study on national trends in achieving the recommended minutes of physical activity guidelines has not improved since the guidelines were published in 2008. Peer interactions have been identified as a critical factor for increasing a population's physical activity. The objective of this study is for establishing criteria for social influences on physical activity for establishing criteria that lead to exercise persistence. A system of differential equations was developed that projects exercise trends over time. The system includes both social and non-social influences that impact changes in physical activity habits and establishes quantitative conditions that delineate population-wide persistence habits from domination of sedentary behavior. The model was generally designed with parameter values that can be estimated to data. Complete absence of social or peer influences resulted in long-term dominance of sedentary behavior and a decline of physically active populations. Social interactions between sedentary and moderately active populations were the most important social parameter that influenced low active populations to become and remain physically active. On the other hand, social interactions encouraging moderately active individuals to become sedentary drove exercise persistence to extinction. Communities should focus on increasing social interactions between sedentary and moderately active individuals to draw sedentary populations to become more active. Additionally, reducing opportunities for moderately active individuals to engage with sedentary individuals through sedentary social activities should be addressed.

Early predictors of successful military careers among West Point cadets.

The importance of leadership to organizational performance puts a premium on identifying future leaders. Early prediction of high-potential talent enables organizations to marshal scarce developmental resources and opportunities to those who are best positioned to show distinction in elevated roles. Much of the existing literature indicates that general mental ability remains the strongest predictor of future professional performance. Using data from 13 classes of West Point graduates who stayed in the Army to be considered for at least early promotion to the rank of major (N = 5,505), regression analyses indicate that cadet military grade point average surpasses both cognitive ability and academic performance by a considerable margin in the ability to predict future professional outcomes such as selection for early promotion or battalion command. Moreover, these differences in predicting managerial career outcomes endure over 16 years. Both practical and theoretical implications are discussed.

Resilience to traumatic exposure among soldiers deployed in combat.

We examined the influence of positive psychological capital (PsyCap), a metaconstruct that combines established psychological predispositions to be resilient to stress, on the well-being of soldiers during combat deployment. Among U.S. Army personnel deployed in Iraq, cognitive appraisal of stress mediated the effects of trait PsyCap on health symptoms. The indirect effects through appraisal were moderated by levels of exposure to potentially traumatic stimuli. Trait PsyCap covaried more strongly with cognitive appraisals, and had stronger indirect effects through appraisal on health, among soldiers in units with higher levels of potentially traumatic exposures. We discuss implications for research on resilience to trauma in the workplace and for helping workers cope with potentially traumatic exposures.