Effects of trusting and being trusted on team citizenship behaviours in chain stores

Previous studies showed a robust and positive relationship between subordinates' trust for leaders and their individual organizational citizenship behaviours. Building on this foundation, we examined two extensions. First, based on the team citizenship behaviours approach, we studied whether the same relationship held at the group level. Second, drawing from literature on leadership and self-efficacy, we studied whether leaders' perceptions of being trusted by their subordinates mattered in this trust relationship; we also examined how this perception affected team citizenship behaviours. Results showed that subordinates' trust for leaders and team citizenship behaviours were positively related at the team level. When leaders felt more trusted, teams showed more citizenship behaviours. Beyond these main effects, leaders' felt trust was found to negatively moderate the relationship between staff trust for leaders and team citizenship behaviours. Theoretical and practical implications of this research are discussed.     

Pronorm and antinorm deviants: a test of the subjective group dynamics model

The authors replicated the study by D. Abrams, J. M. Marques, N. Bown, and M. Henson (2000, Study 2), performed to test the subjective group dynamics model (J. M. Marques, D. Abrams, D. Paez, & C. Martinez-Taboada, 1998). Participants were students enrolled in the psychology department at an Italian university. The present study considered the relationship between students and professors, and the attitude object was limited enrollment for admission to the department. Participants evaluated either in-group or out-group members. Findings replicated those of Abrams et al., except the in-group pronorm deviant was perceived to be less typical and evaluated less positively than the normative members. This finding suggests that, during an intergroup conflict, perception of the typicality of deviants exaggerating the in-group norms--and thus their evaluations--may increase as long as deviance is not perceived to be too accentuated.     

The impact of relational demographics on perceived managerial trustworthiness: similarity or norms?

Perceived trustworthiness is a critical antecedent of interpersonal trust, yet researchers have a limited understanding of how such perceptions are generated. The authors used 2 competing perspectives within the relational demography literature--similarity-attraction and relational norms--to empirically examine the effect of demographic differences. Whereas the similarity-attraction account suggests that subordinates will perceive their managers as more trustworthy when managers and staff are similar in demographic attributes, the relational norms account proposes that subordinates will perceive their managers as more trustworthy when their demographic differences follow normative expectations. Data collected from a field study of 178 manager-subordinate dyads in Hong Kong and Macau support the relational norms account in terms of education and organizational rank. The authors discuss the theoretical and practical implications of the study.     

Genetic and environmental bases of childhood antisocial behavior: a multi-informant twin study

Genetic and environmental influences on childhood antisocial and aggressive behavior (ASB) during childhood were examined in 9- to 10-year-old twins, using a multi-informant approach. The sample (605 families of twins or triplets) was socioeconomically and ethnically diverse, representative of the culturally diverse urban population in Southern California. Measures of ASB included symptom counts for conduct disorder, ratings of aggression, delinquency, and psychopathic traits obtained through child self-reports, teacher, and caregiver ratings. Multivariate analysis revealed a common ASB factor across informants that was strongly heritable (heritability was .96), highlighting the importance of a broad, general measure obtained from multiple sources as a plausible construct for future investigations of specific genetic mechanisms in ASB. The best fitting multivariate model required informant-specific genetic, environmental, and rater effects for variation in observed ASB measures. The results suggest that parents, children, and teachers have only a partly "shared view" and that the additional factors that influence the "rater-specific" view of the child's antisocial behavior vary for different informants. This is the first study to demonstrate strong heritable effects on ASB in ethnically and economically diverse samples.     

“On the Move” or “Staying Put”: Locomotion,Need for Closure,and Reactions to Organizational Change1

Four studies conducted in various organizations in Italy, employing contemporaneous and longitudinal designs, tested hypotheses relating 2 personality constructs—need for cognitive closure ( Kruglanski & Webster, 1996 ) and locomotion tendency ( Higgins, Kruglanski, & Pierro, 2003 ; Kruglanski et al., 2000 )—to individuals’ ability to successfully cope with organizational change. Across diverse organizational settings, populations studied, types of organizational change implemented, and measures of coping with change, we found that need for closure was negatively related, and locomotion tendency was positively related, to coping with change. We also found that the negative relation between need for closure and coping was attenuated where organizational climate is supportive of change, and that degree of successful coping with change determines post‐change work attitudes.     

Effects of trophic poisoning with methylmercury on the appetitive elements of the agonistic sequence in fighting-fish (Betta splendens)

The aggressive display in Betta splendens is particularly prominent, and vital to its adaptation to the environment. Methylmercury is an organic variation of Hg that presents particularly pronounced neuro-behavioral effects. The present experiments aim to test the effect of acute and chronic poisoning with methylmercury on the display in Bettas. The animals were poisoned by trophic means in both experiments (16 ug/kg in acute poisoning; 16 ug/kg/day for chronic poisoning), and tested in agonistic pairs. The total frequency of the display was recorded, analyzing the topography of the agonistic response. The methylmercury seems to present a dose- and detoxification-dependent effect on these responses, with a more pronounced effect on motivity in acute poisoning and on emotionality in the chronic poisoning. It is possible that this effect could be mediated by alteration in the mono-amino-oxidase systems.     

Differentiation Processes for Social Stimuli with Different Degrees of Category Representativeness

The influence of the categorization process is investigated in the context of conceptions of categories as fuzzy sets, represented by prototypes. The experiment specifically considers two social categories corresponding to Italian regional groups: for each of these, stimuli were constructed which represented the respective categories in different degrees. We hypothesized that the accentuation of the degree in which individual exemplars represent a category, obtained by the addition of an attribute of the category, produces the effect of accentuating inter-category differences and intra-category similarities. Our results confirm the hypothesis regarding differentiation, but not that regarding assimilation. The effect of differentiation is strong at the category borders, i.e. for the less representative exemplars. A final issue considered is the theoretical problem of distinguishing, within the prototype of a category, between stereotypical attributes and those which permit categorial identification of individual cases.     

Bayesian inference for psychology. Part II: Example applications with JASP

Bayesian hypothesis testing presents an attractive alternative to p value hypothesis testing. Part I of this series outlined several advantages of Bayesian hypothesis testing, including the ability to quantify evidence and the ability to monitor and update this evidence as data come in, without the need to know the intention with which the data were collected. Despite these and other practical advantages, Bayesian hypothesis tests are still reported relatively rarely. An important impediment to the widespread adoption of Bayesian tests is arguably the lack of user-friendly software for the run-of-the-mill statistical problems that confront psychologists for the analysis of almost every experiment: the t-test, ANOVA, correlation, regression, and contingency tables. In Part II of this series we introduce JASP (http://www.jasp-stats.org), an open-source, cross-platform, user-friendly graphical software package that allows users to carry out Bayesian hypothesis tests for standard statistical problems. JASP is based in part on the Bayesian analyses implemented in Morey and Rouder’s BayesFactor package for R. Armed with JASP, the practical advantages of Bayesian hypothesis testing are only a mouse click away.     

Bayesian inference for psychology. Part I: Theoretical advantages and practical ramifications

Bayesian parameter estimation and Bayesian hypothesis testing present attractive alternatives to classical inference using confidence intervals and p values. In part I of this series we outline ten prominent advantages of the Bayesian approach. Many of these advantages translate to concrete opportunities for pragmatic researchers. For instance, Bayesian hypothesis testing allows researchers to quantify evidence and monitor its progression as data come in, without needing to know the intention with which the data were collected. We end by countering several objections to Bayesian hypothesis testing. Part II of this series discusses JASP, a free and open source software program that makes it easy to conduct Bayesian estimation and testing for a range of popular statistical scenarios (Wagenmakers et al. this issue).