The mediating effect of internal service quality on employee turnover – empirical evidence from Taiwanese nurses

Informed by social exchange theory (SET) this study examines the role of trust in strategic alliances. Interviews were conducted with 17 participants who were strategic alliance managers in their organization. The study finds that trust is important to strategic alliance managers, and without it alliance managers would find it difficult to keep their alliance going. Trust is built over time, and based on the past experiences that the alliance manager has with their partner. The study found that prior networks, timely and appropriate communication and information exchange, fairness preservation and inter-firm adaptation were important in developing trust in the strategic alliance.

Engaging Élitism: the Mediating Effect of Work Engagement on Affective Commitment and Quit Intentions in Two Australian University Groups

Some universities rely on their élitism as one mechanism to attract and retain talented faculty. This paper examines two groups of élite and non-élite universities and the mediating effect that work engagement has on affective commitment and intention to quit. Findings indicate partial support for the mediating effect of work engagement in the non-élite group but no support in the élite university group. The implications of these diverse results are posed for the management of academics in élite and non-élite universities, suggesting that a ‘one size fits all approach’ to performance outcomes does not always fit.

Active video games: the mediating effect of aerobic fitness on body composition

BACKGROUND: Increased understanding of why and how physical activity impacts on health outcomes is needed to increase the effectiveness of physical activity interventions. A recent randomized controlled trial of an active video game (PlayStation EyeToy™) intervention showed a statistically significant treatment effect on the primary outcome, change from baseline in body mass index (BMI), which favored the intervention group at 24 weeks. In this short paper we evaluate the mediating effects of the secondary outcomes.

OBJECTIVE: To identify mediators of the effect of an active video games intervention on body composition.

METHODS: Data from a two-arm parallel randomized controlled trial of an active video game intervention (n = 322) were analyzed. The primary outcome was change from baseline in BMI. A priori secondary outcomes were considered as potential mediators of the intervention on BMI, including aerobic fitness (VO2Max), time spent in moderate-to-vigorous physical activity (MVPA), and food snacking at 24 weeks.

RESULTS: Only aerobic fitness at 24 weeks met the conditions for mediation, and was a significant mediator of BMI.

CONCLUSION: Playing active video games can have a positive effect on body composition in overweight or obese children and this effect is most likely mediated through improved aerobic fitness. Future trials should examine other potential mediators related to this type of intervention.

Servant leadership and follower job performance: The mediating effect of public service motivation

This article advances our understanding of the effects of servant leadership, an employee- and community-focused leadership style, on followers' public service motivation (PSM) and job performance. Based on social learning theory, we argue that by emphasizing to their followers the importance of serving others both inside and outside the organization and by acting as role models by serving others themselves, servant leaders enhance job performance by engendering higher PSM in their followers. A multilevel analysis of three waves of multi-source data from a Chinese government agency reveals that PSM mediates the influence that servant leadership has on followers' job performance. The results are consistent with theoretical predictions that the altruistic behaviour displayed by servant leaders elicits higher levels of the altruistic behaviours that characterize PSM, which in turn increases job performance. Hence, this study contributes to our understanding of how leadership drives institutional change and performance in the public sector.

Understanding the role of mediating risk factors and proxy effects in the association between socio-economic status and untreated hypertension

The association between socio-economic status (SES) and untreated hypertension varies according to a country's level of development and racial/ethnic group. We sought to confirm this variation in women from China and the United States (US) as well as to investigate the impact of SES on several mediating risk factors. We also investigate the extent to which SES explains racial/ethnic differences in untreated hypertension in the US. We used cross-sectional data from 1814 non-pregnant women in China (China Health and Nutrition Survey (CHNS), 1997) and 3266 non-pregnant women in the United States (National Health and Nutrition Examination Survey (NHANES III), 1988–1994) respectively. A variety of statistical modelling techniques was used to predict untreated hypertension as a function of several mediating factors and to simulate the impact of changes in SES. The age-adjusted prevalence of untreated hypertension was significantly higher (p<0.01) for low-income White and Black women compared to Mexican American or Chinese women. Untreated hypertension was not significantly associated with income or education in Mexican Americans or women in China. Obesity and light physical activity had the largest mediating effect on the association between SES and untreated hypertension for all racial/ethnic groups. However, this effect was not as strong as the proxy effect of income and education. SES did not completely explain racial/ethnic differences in hypertension in the US. While SES was more strongly associated with hypertension in Blacks than Whites, Blacks were still 1.97 (95% CI 1.47–2.64) times more likely to have untreated hypertension than Whites after adjusting for SES differences. The association between SES and untreated hypertension varied by country and racial/ethnic group. An important explanation for this variation was the differential effect of SES on mediating risk factors. SES disparities between Whites and Blacks in the US partly explain differences in the prevalence of untreated hypertension between these racial/ethnic groups.

Effects of formal institutions on the performance of the tourism sector in the Philippines: the mediating role of entrepreneurial orientation

Although formal institutions and entrepreneurial orientation have both been found to contribute separately and positively to firm performance, the interplay between the two factors has not received much attention. This study draws from institutional theory and the entrepreneurship literature to argue that entrepreneurial orientation (EO) provides the mechanism through which the formal institutional environment influences the performance of firms in the tourism sector. Using structural equation modelling and data from a large-scale survey of firms in the tourism sector in the Philippines, it is shown that elements of the institutional environment, by themselves, only have limited influence on tourism firms' performance. EO is shown to partially enhance the effects of the institutional environment on firm performance. The strong mediating effect of entrepreneurial orientation on the relationship between the institutional environment and firm performance is a novel finding and highlights the important role of the government in ensuring that the formal institutional environment promotes entrepreneurship which, in turn, enhances the performance of the tourism sector.

Improvements in fundamental movement skill competency mediate the effect of the SCORES intervention on physical activity and cardiorespiratory fitness in children

Numerous studies have identified a positive association between fundamental movement skill (FMS) competency and physical activity in children; however, the causal pathways have not been established. The aim of this study is to determine if changes in FMS competency mediated the effect of the Supporting Children's Outcomes using Rewards, Exercise and Skills (SCORES) intervention on physical activity and cardiorespiratory fitness in children. Eight primary schools (25 classes) and 460 children (aged 8.5 ± 0.6, 54% girls) were randomised to the SCORES intervention or control group for the 12-month study. The outcomes were accelerometer-determined moderate-to-vigorous physical activity (MVPA) and cardiorespiratory fitness. The hypothesised mediators were actual FMS competency and perceived sport competence. Mediation analyses were conducted using multilevel linear analysis in MPlus. From the original sample, 138 (30.0%) and 370 (80.4%) children provided useable physical activity and cardiorespiratory fitness data at post-test assessments. There were significant treatment effects for locomotor skills and overall FMSs. Changes in MVPA were associated with changes in object-control skills, overall FMSs and perceived competence. The overall FMSs had a significant mediating effect on MVPA (AB = 2.09, CI = 0.01-4.55). Overall FMSs (AB = 1.19, CI = 0.002-2.79) and locomotor skills (AB = 0.74, CI = 0.01-1.69) had a significant mediating effect on cardiorespiratory fitness. The results of this study conclude that actual but not perceived movement skill competency mediated the effect of the SCORES intervention on physical activity and cardiorespiratory fitness.

The HEART mobile phone trial: the partial mediating effects of self-efficacy on physical activity among cardiac patients

BACKGROUND: The ubiquitous use of mobile phones provides an ideal opportunity to deliver interventions to increase physical activity levels. Understanding potential mediators of such interventions is needed to increase their effectiveness. A recent randomized controlled trial of a mobile phone and Internet (mHealth) intervention was conducted in New Zealand to determine the effectiveness on exercise capacity and physical activity levels in addition to current cardiac rehabilitation (CR) services for people (n = 171) with ischemic heart disease. Significant intervention effect was observed for self-reported leisure-time physical activity and walking, but not peak oxygen uptake at 24 weeks. There was also significant improvement in self-efficacy.

OBJECTIVE: To evaluate the mediating effect of self-efficacy on physical activity levels in an mHealth delivered exercise CR program.

METHODS: Treatment evaluations were performed on the principle of intention to treat. Adjusted regression analyses were conducted to evaluate the main treatment effect on leisure-time physical activity and walking at 24 weeks, with and without change in self-efficacy as the mediator of interest.

RESULTS: Change in self-efficacy at 24 weeks significantly mediated the treatment effect on leisure-time physical activity by 13%, but only partially mediated the effect on walking by 4% at 24 weeks.

CONCLUSION: An mHealth intervention involving text messaging and Internet support had a positive treatment effect on leisure-time physical activity and walking at 24 weeks, and this effect was likely mediated through changes in self-efficacy. Future trials should examine other potential mediators related to this type of intervention.

Linking positive psychology to offender supervision outcomes: The mediating role of psychological flexibility, general self-efficacy, optimism, and hope

This study examines the relationships between indicators of offender supervision outcomes and dimensions of positive psychological states (PPS). Results of a confirmatory factor analysis (CFA) revealed that the first-order positive psychology constructs converge to form a higher order construct of PPS which was inversely associated with supervision outcomes. Furthermore, the mediating effect of PPS on the relationship between criminogenic risk factors and all offender supervision outcome variables was statistically significant, suggesting that offenders with heightened PPS are likely to have fewer criminogenic risk factors and are less likely to be reported for technical violation, charged, reconvicted, and imprisoned. The implications of these findings for correctional theory, practice, and policy conclude the article.

Mediators of the relationship between maternal education and children's TV viewing

Background: Maternal education is consistently found to be inversely related to children’s television viewing and is associated with aspects of the family television environment. This study investigates whether family television environment mediates the relationship between maternal education and children’s television viewing.

Methods: Parents of 1484 children reported maternal education, time their child spends watching television, and 21 aspects of the family television environment (potential mediators) during 2002 and 2003. Separate regression analyses were conducted in 2006 for each potential mediator that met two initial conditions for mediation (associated with both maternal education and children’s television viewing (p<0.10)), to assess whether inclusion reduced the association between maternal education and children’s television viewing. Multivariable regression assessed the combined impact of all mediators.

Results: Twelve of 21 potential mediators met the initial conditions for mediation. Inclusion of each resulted in decreased β values (3.2% to 15.2%) for the association between maternal education and television viewing. Number and placement of televisions in the home appeared to have the greatest mediating effect, followed by frequency of eating dinner in front of the television with the child and rules about television viewing during mealtimes. Together, the 12 mediators accounted for more than one-third of the association between maternal education and children’s television viewing time.

Conclusions: This study suggests the strong inverse relationship between maternal education and children’s television viewing is partly mediated by aspects of the family television environment.

Explaining the effects of a 1-year intervention promoting a low fat diet in adolescent girls : a mediation analysis

Background : Although it is important to investigate how interventions work, no formal mediation analyses have been conducted to explain behavioral outcomes in school-based fat intake interventions in adolescents. The aim of the present study was to examine mediation effects of changes in psychosocial determinants of dietary fat intake (attitude, social support, self-efficacy, perceived benefits and barriers) on changes in fat intake in adolescent girls.

Methods : Data from a 1-year prospective intervention study were used. A random sample of 804 adolescent girls was included in the study. Girls in the intervention group (n = 415) were exposed to a multi-component school-based intervention program, combining environmental changes with a computer tailored fat intake intervention and parental support. Fat intake and psychosocial determinants of fat intake were measured with validated self-administered questionnaires. To assess mediating effects, a product-of-coefficient test, appropriate for cluster randomized controlled trials, was used.

Results : None of the examined psychosocial factors showed a reliable mediating effect on changes in fat intake. The single-mediator model revealed a statistically significant suppression effect of perceived barriers on changes in fat intake (p = 0.011). In the multiple-mediator model, this effect was no longer significant, which was most likely due to changes in perceived barriers being moderately related to changes in self-efficacy (-0.30) and attitude (-0.25). The overall mediated-suppressed effect of the examined psychosocial factors was virtually zero (total mediated effect = 0.001; SE = 7.22; p = 0.992).

Conclusion : Given the lack of intervention effects on attitudes, social support, self-efficacy and perceived benefits and barriers, it is suggested that future interventions should focus on the identification of effective strategies for changing these theoretical mediators in the desired direction. Alternatively, it could be argued that these constructs need not be targeted in interventions aimed at adolescents, as they may not be responsible for the intervention effects on fat intake. To draw any conclusions regarding mediators of fat-intake change in adolescent' girls and regarding optimal future intervention strategies, more systematic research on the mediating properties of psychosocial variables is needed.

African culturally and linguistically diverse communities’ blood donation intentions in Australia: integrating knowledge into the theory of planned behavior

Background 

Understanding the link between body dissatisfaction and binge eating: a model comparison approach

 This thesis explored the association between body dissatisfaction and binge eating by comparing three competing theoretical frameworks. Study I utilised a cross-sectional design and collectively these findings suggest the superiority of the dual pathway model (dietary restraint and negative affect) over the objectification theory and the escape model. The purpose of Study II was then to extend on the findings from Study I by further examining in real-time the model/theory that most strongly explained the body dissatisfaction-binge eating relationship. Participants were prompted at random intervals seven times daily across the course of a week to self-report their state body dissatisfaction, current mood experiences, and eating practices. Results revealed that negative mood, but not dietary restraint, significantly mediated the state body dissatisfaction-binge eating relationship. These results highlight that the dual pathway model is robust, but raise the possibility that the dietary restraint path in the model is not well operationalized. In light of the non-significant mediating effect of dietary restraint, this led the researcher to identify various modeling alternatives to further understand the mediating influences of the pathways of negative affect and dietary restraint.

Self-esteem mediates the associations among negative affect, body disturbances, and interpersonal problems in treatment-seeking obese individuals

Background: This study investigated the relationship among negative affect, body image disturbances (BID), and interpersonal problems, and the mediating effect of self-esteem in a group of treatment-seeking obese individuals. Methods: Four hundred twenty-two obese patients (85 males and 337 females) completed standardised measures that assessed negative affect, BID, self-esteem, and interpersonal problems. Results: Structural equation modelling showed that obese individuals with greater negative affect and BID reported higher interpersonal problems and that self-esteem mediated the relationships among negative affect, BID, and interpersonal problems. Conclusions: The mediating role of self-esteem in the relationship between interpersonal functioning and psychological distress needs to be considered when selecting psychologically based interventions that aim to improve the well-being of treatment-seeking obese patients. © 2014 The Australian Psychological Society.

Linking prestige perception with consumption experience, loyalty, and WOM

Purpose- The purpose of this paper is to investigate the relationship between perceived external prestige (PEP), the student experience, attitude, and behaviour in the context of higher education institutions.
Design/methodology/approach– A comparison of the relationships between prestige perception, the student experience, WOM, and loyalty is examined within a one highly prestigious institution and one mid-ranked institution. Multigroup structural equation modelling was employed to examine data obtained from 948 respondents at the two institutions.
Findings– While respondents from the top-ranked institution exhibit a significantly higher perception of university prestige than mid-ranked university respondents, no significant differences were found between the two groups of respondents in terms of the strengths of relationships between constructs. The analysis revealed that students’ perception of their university experience performed a full mediating effect on the relationship between PEP and WOM, as well as a partial mediating effect on the relationship between PEP and loyalty.
Practical implications– Student perceptions of the university experience is a strong indicator of attitude and behaviour. For university administrators, enhancing the student experience is just as important as managing a university’s reputation with respect to engendering loyalty and positive WOM.
Originality/value – This is the first study to link PEP with student attitude and behaviour. The findings provide interesting theoretical insights as well as useful managerial implications to enhance consumer experience which in turns affect their attitude and behaviour towards the organisation.