Purpose Psychological Capital (PsyCap), consisting of hope, efficacy, resilience, and optimism, is a positive state associated with attitudes, behaviors and performance. The purpose of this paper is to investigate a dynamic mediational model posing work engagement as the mediator of the longitudinal relation between PsyCap and job performance. Design/methodology/approach Data came from all white collar employees who responded to this study’s variables (n=420) from a comprehensive data set drawn from a large communications service company over two consecutive years. Job performance was rated at the end of each year by the direct supervisor as part of the organizational appraisal system. Findings Structural equation modeling analysis found that both absolute levels and increases in PsyCap predicted subsequent work engagement increases which in turn predicted job performance increases. Moreover, the mediating role of the changes in work engagement between previous PsyCap and performance change was confirmed over time. Research limitations/implications There is much to gain in conceptualizing the relations among PsyCap, work engagement and job performance as dynamic, rather than static. The results support the conservation of resources theory, in which employees are motivated to acquire, protect and foster their valued (psychological) resources to attain successful performance outcomes, in order to create a gain cycle of resources (Salanova et al., 2010). Moreover, it provide further empirical validation for the idea that processes, like work engagement, are sustained by personal resources, and that these latter exerts mostly an indirect effect on organizational behavior outcomes (Xanthopoulou et al., 2009b). Practical implications These results are important from a practical point of view, because they point to the importance of training interventions aimed at developing and sustaining PsyCap as an important determinant of workers’ motivation and behavior within the organization. Considerable literature offers practical insights and guidelines for developing PsyCap (Luthans et al., 2006, 2015; Luthans and Youssef-Morgan, 2017). Originality/value Despite the demonstrated state-like, dynamic nature of PsyCap, its relationship with performance has mainly been statically analyzed and the role of possible mediating mechanisms largely ignored. This study begins to fill this research gap by investigating the dynamic nature of PsyCap in relation to work engagement and job performance and whether over time engagement mediates the relationship between PsyCap and job performance.

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In team-based organizations, team members may share similar experiences, feelings and, consequently, susceptibility to burnout. This study explores the burnout process beyond the individual level of analysis and integrates Social Cognitive Theory (SCT) with the Job Demands-Resources Model (JD-R), emphasizing the role of self-efficacy in shaping the meaning that people ascribe to situations. A multilevel structural equation model was tested in which it was predicted that work self-efficacy beliefs would be associated with burnout both directly and indirectly via job demands and job resources, and at both the individual and the team level. Moreover, it was posited that, at the team level, registered sickness absences are predicted by burnout. A sample of 5406 call centre operators, clustered in 186 teams working in the same large Italian company, filled out a questionnaire, whereas team absence rates were provided by the company's HR department. The findings largely supported the hypothesized model: at both levels, job demands and job resources partially mediated the relationship between self-efficacy and burnout. Moreover, at the team level, burnout predicted subsequent sickness absenteeism. In addition, individual-level burnout was primarily associated with job demands, whereas team-level burnout was primarily associated with a lack of team-level resources. © 2013 Copyright Taylor and Francis Group, LLC

A rare collection of personality assessments from 103 Italian politicians revealed predictable patterns of contrasts and similarities with personality dimensions from a large normative sample (N = 4,578). Three modal personality characteristics distinguished politicians, with their significantly higher levels of Energy, Agreeableness, and Social Desirability, from the general public. Comparability between politicians and the public existed on dimensions of Emotional Stability, Conscientiousness, and Openness (Big Five Questionnaire assessment). Politicians from rival coalitions differed on several dimensions; center-right was higher than center-left in Energy and Conscientiousness. Congruencies emerged between politicians and voters for their coalition on all personality dimensions, except that center-left politicians were higher in Energy than center-left voters, and center-right politicians were higher than voters in both Energy and Agreeableness.

This study aims to investigate the validity of a conceptual model that explains the mechanisms linking positive orientation (P-OR) to future job performance in a sample of 388 male security agents. The relationship between P-OR and job performance as rated by three supervisors, each with different responsibilities with respect to the participants, was examined via the company's performance appraisal tool. In particular, this study investigated whether the relationship between P-OR and job performance is mediated by work engagement and moderated by levels of work self-efficacy beliefs. Results were consistent with predictions made from the conceptual model in that work engagement partially mediated the relation between P-OR and job performance. This was particularly the case when work self-efficacy beliefs were high or medium, but not when work self-efficacy beliefs were low. Likewise, P-OR exerted a residual direct effect on job performance when work self-efficacy beliefs were high or medium, but not when they were low. Overall, the findings demonstrated that work engagement and work self-efficacy beliefs refer to key mechanisms turning POS into job performance. © 2014 Springer Science+Business Media Dordrecht

Dento-alveolar pathologies and alterations (dental wear, caries, abscesses, ante mortem tooth loss (AMTL), calculus, hypoplastic defects, and chipping) and skeletal markers of health (cribra orbitalia and periostitis) were analyzed in two skeletal samples from the necropolises of Quadrella (I-IV c. AD) and Vicenne-Campochiaro (VII c. AD) in the Molise region of central Italy. The aim was to determine if the Roman Imperial Age-Early Middle Ages transition characterized by political, socioeconomic, and cultural transformations affected the biology of these populations, particularly their alimentation and health status. The frequencies of caries and AMTL, similar in the two samples, suggest a high consumption of carbohydrates. The higher levels of heavy wear, calculus, and interproximal chipping in the Vicenne population indicate a greater use of fibrous foods (both meat and others), in line with the dietary model of Germanic peoples. Health conditions do not appear to have been good in either period, as shown by the high frequencies of linear hypoplasia and the presence of cribra orbitalia and periostitis. The diet of the individuals buried with horses of the Vicenne population did not differ from that of the rest of the population, whereas there were evident differences in the use of the teeth for nonmasticatory activities among these individuals. Therefore, from the point of view of alimentation and health status, the profound socioeconomic and cultural transformations during the Late Antiquity-Early Middle Ages transition do not seem to have been translated into a true discontinuity of the two Molisan populations.

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Purpose-Work engagement represents an important aspect of employee well-being and performance and has been related to both job and personal resources. The purpose of this paper, based on Social Cognitive Theory, is to emphasize the proactive role of self-efficacy which is hypothesized to predict work engagement, not only directly, but also indirectly through positive changes in employee's perceptions of social context (PoSC); namely, perceptions of one's immediate supervisor, colleagues and top management. Design/methodology/approach-A sample of 741 employees of a communication service company completed two questionnaires, with a time interval of three years. Structural equation modeling was performed in order to test the hypothesized model. Findings-Results revealed that, as expected: first, initial self-efficacy predicts work engagement three years later; and second, positive changes in employee's perceptions of the social work context across the three year period, mediates the relationship between self-efficacy and work engagement. Research limitations/implications-Results relied only upon self-report data. Moreover, each variable was only measured at the time in which it was hypothesized by the conceptual model. Practical implications-The significant role of self-efficacy as a direct and indirect predictor of work engagement suggests the development of training programs centered on the main sources of self-efficacy, specifically focussed on the social work domain. Originality/value-This research provides evidence of the substantial contribution of self-efficacy to work engagement over time. Moreover, the results also support the beneficial effects of self-efficacy through its influence on the improvements in the individuals' perceptions of their social context.