Abstract: It is common knowledge that physical activity leads to numerous health and psychological benefits. However, the relationship between children's physical activity and academic achievement has been debated in the literature. Some studies have found strong, positive relationships between physical activity and cognitive outcomes, while other studies have reported small, negative associations. This study was a comprehensive, quantitative synthesis of the literature, using a total of 59 studies from 1947 to 2009 for analysis. Results indicated a significant and positive effect of physical activity on children's achievement and cognitive outcomes, with aerobic exercise having the greatest effect. A number of moderator variables were also found to play a significant role in this relationship. Findings are discussed in light of improving children's academic performance and changing school-based policy.

Abstract: Objectives. We conducted a meta-analysis summarizing the effects of interventions designed to increase physical activity among healthy adults.Methods. Our comprehensive searches located 358 reports eligible for inclusion. We used random-effects analyses to synthesize data, and we used meta-analytic analogues of regression and analysis of variance to examine potential moderator variables. We also explored moderator variable robustness and publication bias.Results. We computed meta-analytic results from studies comprising 99 011 participants. The overall mean effect size for comparisons of treatment groups versus control groups was 0.19 (higher mean for treatment participants than for control participants). This effect size is consistent with a mean difference of 496 ambulatory steps per day between treatment and control participants. Exploratory moderator analyses suggested that the characteristics of the most effective interventions were behavioral interventions instead of cognitive interventions, face-to...

Abstract: Cognitive reserve, broadly conceived, encompasses aspects of brain structure and function that optimize individual performance in the presence of injury or pathology. Reserve is defined as a feature of brain structure and/or function that modifies the relationship between injury or pathology and performance on neuropsychological tasks or clinical outcomes. Reserve is challenging to study for two reasons. The first is: reserve is a hypothetical construct, and direct measures of reserve are not available. Proxy variables and latent variable models are used to attempt to operationalize reserve. The second is: in vivo measures of neuronal pathology are not widely available. It is challenging to develop and test models involving a risk factor (injury or pathology), a moderator (reserve) and an outcome (performance or clinical status) when neither the risk factor nor the moderator are measured directly. We discuss approaches for quantifying reserve with latent variable models, with emphasis on their application in the analysis of data from observational studies. Increasingly latent variable models are used to generate composites of cognitive reserve based on multiple proxies. We review the theoretical and ontological status of latent variable modeling approaches to cognitive reserve, and suggest research strategies for advancing the field. (JINS, 2011, 17, 593–601)

Abstract: Creativity research on the personality approach has focused on the relationship between individual attributes and innovative behavior. However, few studies have empirically examined the effects of positive psychological traits on innovative behavior in an organizational setting. This study examines the relationships among creative self-efficacy, optimism, and innovative behavior as well as the moderating effect of optimism. Longitudinal data across two periods were collected from 120 spa employees of a diet and beauty salon company in Taiwan. After controlling for the effects of job tenure and the Big Five personality traits, this study found that employees with a high level of creative self-efficacy demonstrate a high level of innovative behavior at work, and optimism does not have a direct effect on employees' innovative behavior, but it does play a moderating role. When employees' creative self-efficacy is high, those with greater optimism exhibit greater innovative behavior at work. Toward the end, this paper offers suggestions for future research and discusses the practical implications of this study.

Abstract: Online communities provide a social sphere for people to share information and knowledge. While information sharing is becoming a ubiquitous online phenomenon, how to ensure information quality or induce quality content remains a challenge because of the anonymity of commentators. This paper introduces moderation into reputation systems. We show that moderation directly affects strategic commentators' incentive to generate useful information, and moderation is generally desirable to improve information quality. We find that when being moderated with different probabilities based on their reputations, commentators might display a pattern of reputation oscillation, in which they generate useful content to build up high reputation and then exploit their reputation. As a result, the expected performance from high-reputation commentators can be inferior to that from low-reputation commentators (reverse reputation). We then investigate the optimal moderation resource allocation and conclude that the seemingly abnormal reverse reputation could arise as an optimal result. Our study underscores the importance of moderation and highlights that the frequency of moderation should be properly chosen for better performance of online communities.

Abstract: This study examines the role of the personality variable, locus of control, as a moderator of the relationship between budgetary participation and managerial performance. The results of a laboratory study employing two separate subject groupsundergraduate accounting students and managers from a large manufacturing companyshow a statistically significant interaction between participation and locus of control affecting performance. Budgetary participation was found to have a positive effect on individuals who feel they have a large degree of control over their destiny internalsls" on the locus of control scale), while having a negative effect on those individuals who feel that their destinies are controlled by luck, chance, or fate ("externals" on the locus of control scale). The results are discussed and possible applications in the areas of job redesign and personnel selection and placement are considered. T HE issue of participation in the budgetary process has occupied the attention of researchers in management accounting, perhaps to an extent greater than for any other budget-related variable. The findings from this line of research have been very fruitful in the area of cognitive consequences of participation. In a study of foremen in a large manufacturing company, Milani [1975] showed that participation was positively associated with attitudes toward both job and company and Collins [1978] found a similar association with attitude toward the budgetary system. In the area of job satisfaction, both French et al. [1966] and Cherrington and Cherrington [1973] have reported results which show a positive association with participation. Hofstede [1967] found that participation increased the "internalization" of budgeted goals thereby enhancing motivation, while French et al. [1960] found that participation was positively associated with morale. On the question of behavioral outcomes resulting from participation, in particular that of performance, the evidence is mixed. On the positive side, Argyris [1952] concluded that the key to effective performance is in gaining acceptance of budget goals and that participation plays a central role in accomplishing this. Becker and Green [1962] extended this conclusion by noting the key role of participation in inducing motivation. Bass and Leavitt [1963], employing business managers and supervisors as experimental subjects. found a clear tenThe helpful suggestions of the participants in both the Sloan School Accounting and Control Research Seminar and the New York University Accounting Research Colloquium, together with the comments of the anonymous reviewers, are gratefully acknowledged. Peter Brownell is Assistant Professor of Management Science, Massachusetts Institute of Technology. Manuscript received Februr v I Q980. Revisions receive( June and September 1980. Accepted November 1980.

Abstract: Objective. This article presents an updated meta-analysis of field and laboratory studies that examine the influence of age on a number of evaluative workplace outcomes (advancement, selection, general evaluations, interpersonal skills, and reliability). Method. A random effects meta-analytic procedure was used. Results. In line with the perspective that perceptions of older workers are multidimensional, the observed meta-analytic correlations indicate that age has medium-sized negative effects on majority of the outcomes investigated (radvancement = −.21, rselection = −.30, rgeneral evaluations = −.24, and rinterpersonal skills = −.23, and a medium-sized positive effect on perceptions of reliability (rreliability = .31). Additionally, evidence of moderation by study design for the selection outcome is presented, such that within-subjects designs elicit stronger effects of age than between-subjects designs. Discussion. The present study demonstrates that it is likely that older workers are not viewed entirely negatively or entirely positively in the workplace; rather, the perceptions of older workers are more are varied, and even positive in some cases.

Abstract: The effectiveness of school counseling interventions is important in this era of evidence-based practices. In this study, Meta-Analysis 1 involved treatment-control comparisons and Meta-Analysis 2 involved pretest-posttest differences. The overall average weighted effect size for school counseling interventions was .30. The study examined whether pertinent moderator variables influenced effect sizes. The pretest-posttest effect size was not significant, so moderator analyses were conducted on treatment-control comparisons. Analyses of moderator variables indicated school counseling program activities or interventions varied in effectiveness.

Abstract: In recent years, there has been a surge in the quantity of media content that glorifies risk-taking behavior, such as risky driving, extreme sports, or binge drinking. The authors conducted a meta-analysis involving more than 80,000 participants and 105 independent effect sizes to examine whether exposure to such media depictions increased their recipients' risk-taking inclinations. A positive connection was found for overall, combined risk taking (g=.41); as well as its underlying dimensions: risk-taking behaviors (g=.41), risk-positive cognitions and attitudes (g=.35), and risk-positive emotions (g=.56). This effect was observed across varying research methods (experimental, correlational, longitudinal); types of media (video games, movies, advertising, TV, music); and differing risk-related outcome measures (e.g., smoking, drinking, risky driving, sexual behavior). Multiple moderator analyses revealed 2 theoretically new boundary conditions for sociocognitive models. First, the effect was stronger for active (i.e., video games) than for passive (e.g., film, music) exposure to risk-glorifying media content. Second, the effect was stronger when there was a high degree of contextual fit between the media content and type of risk-taking measure. The theoretical, practical, and societal implications of the present research synthesis are discussed.

Abstract: The purpose of this study was to explore an alternative relationship between job autonomy and employee outcomes. In contrast to the dominating view that perceived job autonomy leads to increased levels of intrinsic motivation and in turn work performance, we developed a hypothesis proposing that intrinsic motivation moderates the relationship between perceived job autonomy and work performance. Two cross-sectional surveys among 302 employees from different Norwegian service organizations showed that the relationship between perceived job autonomy and both self-reported and line-manager rated work quality was moderated by intrinsic motivation. The form of the moderation revealed a positive relationship only for employees high in intrinsic motivation in both studies. Implications for practice and directions for future research are discussed.

Abstract: The purpose of this second article in the special topic issue from the National Training Initiative on Self-Determination is to provide detail with regard to how we understand the self-determination construct and to discuss moderator variables and how such variables impact the design and implementation of interventions to promote self-determination. Moderator variables are baseline factors that define subgroups with greater versus lesser intervention response. That is, they are factors that need to be taken into account, a priori, when designing interventions so that the intervention might address unique needs or characteristics of the people for whom the intervention is intended.

Abstract: This study is a comprehensive, quantitative synthesis of the literature examining the effects of homophobic bullying on both sexual-minority and heterosexual youths’ psychological outcomes. The final analysis included 16 published and 2 unpublished studies from around the world, totaling 81 effect sizes. Various study characteristics were coded to assess moderator effects, but only age of youth was found to play a significant role between bullying and detrimental outcomes for youths. Results demonstrated that sexual-minority youths experience significantly more bullying and victimization than do heterosexual peers and that these hostile experiences contribute to a number of negative outcomes for sexual-minority youths.

Abstract: The study contributes to the debate in the HRM literature by examining the role of trust in management in moderating the effect of HRM practices on employee attitudes. The novelty of the study lies in our interest in assessing this relationship not only on a system of HR practices, but also considering whether the influence varies according to specific ‘bundles’ of practices. Adopting a Structural Equation Modelling approach, we first test the moderation using an HRM index of seven practices on a sample of 9,000 employees from 46 Italian organisations. Then, following the AMO approach, we assess the relationship on three ‘bundles’ of practices, one oriented to increasing ability, another motivation and the third opportunity to participate. Results confirm the moderation with the overall HRM index. Interestingly, the effect varies depending on the HR bundles, being significant only with the motivation practices and not relevant in the other two bundles.

Abstract: Purpose – It has been argued that behavioural models of technology acceptance do not serve equally across cultures. This study aims to extend technology acceptance model (TAM) to suit in a developing country context. The model attempts to identify the relationship between social norms, management support and moderating factors voluntariness and experience.Design/methodology/approach – The study used a quantitative methodology to investigate the correlational paths. A cross‐sectional survey was completed by 504 academics working in higher educational institutes of Pakistan. The data were analysed using structural equation modelling (SEM) based on partial least squares (PLS) methods.Findings – The extended model achieved acceptable fit and most of the hypothesised paths were significant. Determinant perceived usefulness was an important construct of the internet acceptance, i.e. R2=34 per cent more than behavioural intention. Moderator experience diminished the impact of usefulness on behaviour usage.Practi...

Abstract: Researchers have been concerned with whether strong racial identification promotes or inhibits achievement motivation among African American youth, but current literatures have paid little attention to the role of youths' contexts. In this study, we outline a racial identity–context congruence framework that predicts positive benefits of a strong, positive racial identity when the context is congruent with youths' beliefs. To test this framework, we examined school racial climate as a moderator in the relationships of three racial identity variables (centrality, private regard, and public regard) with intrinsic motivation for attending school in a sample of 11th graders. Overall, results support the congruence perspective and also demonstrate how feelings of belonging at school mediate the relationship between racial identity–racial climate congruence and school intrinsic motivation.

Abstract: A considerable number of studies have provided empirical evidence of people's perception of media bias—the hostile media effect (HME). This study conducts a meta-analysis of 34 HME studies. HME, in which individuals perceive news coverage as biased against their own side, is observed in diverse contexts with a moderate effect size. Involvement is a moderating variable of the effect: The effect size was significantly higher as people became more involved with the topic. Nonetheless, the phenomenon also manifests under relatively low involvement conditions. The meta-analysis also indicates that there is no statistical evidence to suggest that the media format (e.g., newspaper or television) or study design (i.e., experimental or survey) moderates HME.

Abstract: In the present study, we tested a theoretically and empirically derived partially indirect effects acculturation and enculturation model of Asian American college students' mental health and attitudes toward seeking professional psychological help. Latent variable path analysis with 296 self-identified Asian American college students supported the partially indirect effects model and demonstrated the ways in which behavioral acculturation, behavioral enculturation, values acculturation, values enculturation, and acculturation gap family conflict related to mental health and attitudes toward seeking professional psychological help directly and indirectly through acculturative stress. We also tested a generational status moderator hypothesis to determine whether differences in model-implied relationships emerged across U.S.- (n = 185) and foreign-born (n = 107) participants. Consistent with this hypothesis, statistically significant differences in structural coefficients emerged across generational status. Limitations, future directions for research, and counseling implications are discussed.

Abstract: The purpose of our research is to examine the relationship between subordinate ratings of a target-leader's empathic emotion and boss ratings of performance of that target-leader. Furthermore, using hierarchical linear modeling, we assess whether the cultural background of the target-leader moderates this relationship. Our results show that leaders who are rated by their subordinates as engaging in behaviors that signal empathic emotion are perceived as better performers by their bosses. In addition, we found that the GLOBE societal culture dimension of power distance was a significant cross-level moderator of the relationship between empathic emotion and performance. Implications for leading in cross-cultural and multicultural contexts are discussed.

Abstract: Objective:Although spiritual change is hypothesized to contribute to recovery from alcohol dependence, few studies have used prospective data to investigate this hypothesis. Prior studies have also been limited to treatment-seeking and Alcoholics Anonymous (AA) samples. This study included alcohol-dependent individuals, both in treatment and not, to investigate the effect of spiritual and religious (SR) change on subsequent drinking outcomes, independent of AA involvement.Method:Alcoholics (N = 364) were recruited for a panel study from two abstinence-based treatment centers, a moderation drinking program, and untreated individuals from the local community. Quantitative measures of SR change between baseline and 6 months were used to predict 9-month drinking outcomes, controlling for baseline drinking and AA involvement.Results:Significant 6-month changes in 8 of 12 SR measures were found, which included private SR practices, beliefs, daily spiritual experiences, three measures of forgiveness, negative re...

Abstract: Five studies tested whether need for closure (NFC) moderates the relation between intergroup contact and prejudice toward immigrants. The results consistently showed that intergroup contact was more strongly associated with reduced levels of prejudice among people high in NFC compared to people low in NFC. Studies 1 (N = 138 students) and 2 (N = 294 adults) demonstrated this moderator effect on subtle, modern, and blatant racism. Study 2 also replicated the moderator effect for extended contact. An experimental field study (Study 3; N = 60 students) provided evidence of the causal direction of the moderator effect. Finally, Studies 4 (N = 125 students) and 5 (N = 135 adults) identified intergroup anxiety as the mediator through which the moderator effect influences modern and blatant racism as well as hostile tendencies toward immigrants. The role of motivated cognition in the relation between intergroup contact and prejudice is discussed.

Abstract: This research examines whether the relationship between an individual's personality and their behavior within a team is contingent on the team's overall perception of its capability. Individuals were peer-rated on the extent to which they displayed interpersonal and performance management teamwork behaviors over the course of an 8 week business simulation. The personality trait of agreeableness predicted interpersonal teamwork behavior, while the personality traits of conscientiousness and core self-evaluation (CSE) predicted performance management behavior. Multilevel analysis showed that collective efficacy influenced the extent to which an individual engaged in both types of behavior, and was also a cross-level moderator of the relationship between agreeableness and interpersonal behavior and the relationship between CSE and performance management behavior. At the team level, interpersonal behavior mediated between collective efficacy and team performance. The study's results show that in team settings the personality and individual behavior relationship may depend on group level confidence perceptions. Copyright © 2010 John Wiley & Sons, Ltd.

Abstract: E-moderation has been a common practice in asynchronous discussions of postsecondary courses. We consider here e-moderation of synchronous discussions in the school context. We adopt a design research approach to elaborate an environment, the Argunaut system, that fits the reality of classrooms in which moderation of several small-group synchronous discussions in parallel is desirable. We describe the Argunaut system and then describe an experiment in which a moderator could elaborate several strategies in 2 synchronous discussions (1 with 2 groups in parallel and 1 with 4 groups in parallel). Through the technique of cued retrospective reporting, we could identify those strategies and could show how technology and moderation are interwoven. We then assessed whether the actions of the moderator had some positive impact on the flow of the discussions. The positive findings that emerge from this study indicate that teachers can enact this novel practice in classrooms, enabling by such proper guidance for pr...