Effects of Acute Stress or Centrally Injected Interleukin-1beta on Neuropeptide Expression in the Immune System

Acute stress stimulates the expression and release of corticotropin-releasing hormone (CRH) and arginine vasopressin (AVP) from the hypothalamus, and the pro-opiomelanocortin products beta-endorphin and ACTH from the anterior pituitary. These neuropeptides are also expressed in immune tissues, and it has been proposed that they may modulate immune responses to stress through paracrine mechanisms. We subjected rats to restraint stress or central injection of interleukin (IL)-1beta to determine whether these acute stimuli can alter the expression of neuropeptides in the spleen and thymus. Restraint stress significantly increased the contents of all these neuropeptides in thymic, but not splenic, extracts. A single icv injection of IL-1beta increased contents of CRH, AVP, ACTH and beta-endorphin in the spleens of both sham-operated and adrenalectomised (ADX) rats. IL-1beta increased thymic contents of CRH and ACTH in sham-operated rats but these increases were not observed in ADX rats. These results suggest that the effects of IL-1beta on neuropeptide expression in the spleen are independent of glucocorticoids, whereas IL-1beta stimulation of neuropeptide expression in the thymus is dependent on circulating glucocorticoids. There were significant correlations between increases in CRH, ACTH and beta-endorphin in the spleen, and between CRH and ACTH in the thymus, consistent with the suggestion that IL-1beta-induced increases in ACTH and beta-endorphin may be mediated through CRH. These results provide evidence that stressors can directly influence neuropeptide expression in immune tissues. Thus stress may influence immune functions through paracrine mechanisms involving locally synthesised neuropeptides as well as through activation of the hypothalamo-pituitary-adrenal axis.     

The role of traditionality in the relationships among parental support,career decision-making self-efficacy and career adaptability

Integrating career construction (Savickas, 2013) and cognitive evaluation (Ryan & Deci, 2002) theories, we examined the moderating role of traditionality beliefs in the indirect relationships among parental support, career decision-making self-efficacy and career adaptability among Chinese university students. Data were collected from 731 undergraduate students in China at two measurement periods, 18 months apart. Results showed that Time 1 parental support was associated positively with Time 1 career decision-making self-efficacy and Time 2 career adaptability. In addition, the conditional indirect effects of Time 1 parental support in predicting Time 2 career adaptability via Time 1 career decision making self-efficacy were stronger among students with low as opposed to high traditionality beliefs. The implications of the results in terms of theory and practice are discussed.     

The Interactive Effects of Procedural Justice and Equity Sensitivity in Predicting Responses to Psychological Contract Breach: An Interactionist Perspective

Purpose  The purpose of the study was to examine the combined interactive effects of a situational variable (procedural justice) and a dispositional (equity sensitivity) variable on the relationship between breach and employee outcomes. Design/methodology/approach   Data were obtained from 403 full-time employees representing a wide variety of business sectors in the Philippines. Supervisors were requested to provide an assessment of their subordinate’s civic virtue behavior. Findings  Results showed that equity sensitivity and breach interacted in predicting affective commitment. The negative relationship between breach and affective commitment was stronger for employees with an input-focused approach to organizational relationships (referred to as benevolents) than for those with an outcome-focused approach (referred to as entitleds). Results also indicated a stronger negative relationship between contract breach and civic virtue behavior under conditions of high procedural justice. Finally, a three-way interaction was found between contract breach, procedural justice and equity sensitivity in predicting affective commitment. Implications  Our findings provide a new insight suggesting that worse outcomes are to be anticipated especially if employees have an expectation that procedural justice can prevent any form of contract breach. In addition, although previous research has portrayed benevolents as more accepting of situations of u under-reward, this study has demonstrated that they too have their limits or threshold for under-reward situations. Originality/value  This research suggests that the type and intensity of one’s reactions to psychological contract breach is influenced by interactive forces of the individual’s disposition and the organizational procedures. A portion of this paper was presented at the 64th annual meeting of the academy of management meeting, New Orleans, USA, August, 2004.     

The role of career adaptability in predicting entrepreneurial intentions: A moderated mediation model

Guided by the Career Construction Theory (Savickas, 2013), we view entrepreneurship as an adaptive vocational behavior driven by an individual's self-regulatory capacity to thrive in a complex entrepreneurial career context. Our research model posited that individuals rely on their adaptive resources and entrepreneurial self-efficacy as they form entrepreneurial intentions. Career adaptability, as self-regulatory competencies, is further strengthened by prior exposure to family business. We collected data over three measurement periods from Serbian business students (n = 380) and validated the Career Adapt-Abilities Scale (CAAS). The moderated mediation model was supported and as predicted: (a) career adaptability was positively associated with entrepreneurial intentions and (b) the mediated relationship between career adaptability and entrepreneurial intentions via entrepreneurial self-efficacy was stronger for individuals with prior exposure to family business. In addition, we provide evidence for the psychometric properties of CAAS by examining its internal consistency, test–retest reliability, and factor structure. Taken together, our study offers the groundwork for understanding successful adaptation in the entrepreneurial career context and supports the cross-national measurement equivalence and utility of CAAS in a developing economy.     

Career optimism: The roles of contextual support and career decision-making self-efficacy

Drawing from the social cognitive theory (Bandura, 1986), we examined the role of parental support, teacher support, and career decision-making self-efficacy as sources of career optimism. We tested our proposed model using 235 computer science majors from a large university in the Philippines. Surveys were conducted over two measurement periods (1 year apart). Results revealed that Time 1 parental and teacher support were positively associated with Time 2 career optimism. Furthermore, we found that these direct relationships were fully mediated by Time 1 career decision-making self-efficacy. These results remained significant even after controlling for neuroticism and past performance. Theoretical and practical implications are discussed.     

Investigating the role of psychological contract breach on career success: Convergent evidence from two longitudinal studies

The current study extends past research by examining leader–member exchange as a mediator of the relationship between employee reports of psychological contract breach and career success. In addition, we tested a competing perspective in which we proposed that performance mediators (i.e., in-role performance and organizational citizenship behaviors) will mediate the breach–career success relationship. Subjective and objective indicators of career success were assessed using supervisor-rated promotability and archival data on actual promotion decisions, respectively. In Sample 1, we found that supervisor-rated leader–member exchange (T1) mediated the relationship between breach (T1) and objective career success after 2 years. In sample 2, we replicated and extended these results using a three wave measurement over three years. Specifically, we found that leader–member exchange (T2) mediated the relationship between relational breach (T1) and subjective (T2) and objective (T3) career success. Performance-based mediators at T2 were no longer significant when regressed together with leader–member exchange and relational breach, ruling out alternative mediator explanations.     

Validation of the Career Adapt-Abilities Scale and an examination of a model of career adaptation in the Philippine context

This paper presents the validation of the Career Adapt-Abilities Scale (CAAS) in the Philippine context. The CAAS consists of four subscales, with six items each, measuring self-regulative psychosocial resources (e.g., concern, curiosity, control, and confidence) for coping with occupational tasks and transitions. Filipino university students (N = 289) and working adults (N = 495) participated in the study. Internal consistency estimates for the full scale and subscales ranged from .87 to .97. Confirmatory factor analyses supported the multidimensional and hierarchical model of career adaptability. The factor structure was similar to that obtained from the CAAS international validation from 18 countries. Results also suggested that career adaptability was positively associated with adaptivity in the form of tenacious goal pursuit and flexible goal adjustment as well as with adaptation outcomes of career satisfaction and promotability. Overall, the findings confirm the utility of CAAS in the Philippine context and support the model that states higher levels of personal adaptivity (willingness) and career adaptability (competence) relate to better adaptation outcomes in terms of career success.     

When employees behave badly: the roles of contract importance and workplace familism in predicting negative reactions to psychological contract breach

In this paper, we examine the influence of contract importance, feelings of violation, and workplace familism on the relationship between psychological contract breach and organizational deviance. Results from a study of 168 supervisor–employee dyads in a pharmaceutical organization suggest that (a) feelings of violation mediated the relationship between perceived breach and supervisor‐rated organizational deviance; (b) relational and transactional contract importance influenced the relationship between breach and feelings of violation such that the relationship was stronger under conditions of high relational and transactional importance; and (c) high levels of workplace familism mitigated the effects of feelings of violation on supervisor‐rated organizational deviance.     

Feeling left out? The mediating role of perceived rejection on workgroup mistreatment and affective,behavioral, and organizational outcomes and the moderating role of organizational norms

This two‐study paper examines the detrimental impact of workgroup mistreatment and the mediating role of perceived rejection. In Study 1, perceived rejection emerged as a mediator between workgroup mistreatment and depression, organization‐based self‐esteem, organizational deviance, and organizational citizenship behaviors. In Study 2, the role of organizational norms was examined. Employees who experienced supportive organizational norms reported lower levels of perceived rejection, depression and turnover intentions, and higher levels of organization‐based self‐esteem and job satisfaction. Employees in the supportive norms condition reported that they were more likely to seek reconciliation after experiencing mistreatment than those who experienced low support. Perceived rejection also emerged as a mediator. Results, practical implications, and future research directions are discussed.     

Yielding to (cyber)-temptation: Exploring the buffering role of self-control in the relationship between organizational justice and cyberloafing behavior in the workplace

Guided by the Strength Model of Self-control (Muraven & Baumeister, 2000) and the General Theory of Crime (Gottfredson & Hirschi, 1990), we examined the role of self-control in buffering the negative relationship between perceived organizational justice and cyberloafing behavior. Two hundred thirty-eight employee and co-worker dyads participated in the study. Organizational justice negatively predicted cyberloafing behavior, though this relationship had ceased to be statistically significant after controlling for gender, age, and hours of internet use for work-related activities. In addition, self-control moderated this relationship. Specifically, there was a stronger negative relationship between perceived organizational justice and cyberloafing for employees with high as opposed to low levels of self-control.