Sequential and myopic: On the use of feedback to balance cost and utility in a simulated electricity efficiency task

While there is extensive research on feedback, little research is aimed at the use of feedback to optimise conflicting goals. A task modelled after In Home Displays for providing feedback about electricity cost was designed to investigate the effects of feedback frequency, detail, and stability, when participants try to balance cost and utility. Frequent feedback proved to be advantageous in a deterministic system, but feedback aggregated over time was advantageous in a system with noisy feedback. Surprisingly, performance was better with noisy feedback, where the probabilism, in effect, acted as a filter, highlighting the applications that are most important for the cost and the utility. Computational modelling suggested that the best-fitting model assumes that the participants are sequential, considering one goal at a time, first satisfying the cost budget, only thereafter trying to maximise the utility, and reflexive, myopically responding primarily to the feedback explicitly available on a given trial.     

领导-成员交换与情绪枯竭:互惠信念和权力距离导向的作用

结合社会交换理论和角色理论,领导-成员交换关系中下属的回报不仅受到互惠规范的约束,还受到上下级关系权力不对称的影响。因此,将探索互惠信念和权力距离导向单独及交互项对领导-成员交换与情绪枯竭关系的调节作用。采用两个时间点172名员工的匹配数据,运用层级回归对假设进行了检验。结果表明,领导-成员交换(T1)与情绪枯竭(T2)总体上呈显著负向关系。互惠信念(T1)和权力距离导向(T1)单独对领导-成员交换与情绪枯竭关系的调节作用并不显著,但是二者的交互项的调节作用显著。即,领导-成员交换、互惠信念和权力距离导向对情绪枯竭有显著三维交互作用。具体的,高互惠信念和低权力距离导向的员工,领导-成员交换与情绪枯竭呈显著正向关系;高互惠信念和高权力距离导向的员工,领导-成员交换与情绪枯竭呈显著负向关系。研究验证了领导-成员交换过程中互惠规范的作用,表明互惠规范的适用性受到上下级关系特征的影响。     

Presence of ε-martensite as an intermediate phase during the strain-induced transformation of SUS304 stainless steel

We have investigated the formation process of α′-martensite from the γ-phase induced by external strain using in situ synchrotron diffraction experiments, combined with Lorentz transmission electron microscopy (TEM) and high-resolution TEM observations. It is clearly demonstrated that ε-martensite with hexagonal symmetry appears as an intermediate structure during the plastic deformation of SUS304 stainless steel. In addition to stacking faults and dislocations, interfaces between the twin structures presumably play a key role in the formation of ε-martensite.     

The mediating effect of leader-member exchange between strengths use and work engagement

This study investigated the mediating effect of leader-member exchange (LMX) (as perceived by subordinates) in the relationship between strengths use and work engagement. Participants numbered 213 employees in a South African financial organisation (females=53.10%, blacks=19.40%). Data on their perceptions of LMX, strengths use and work engagement were collected with the LMX-7, SUDIQ and UWES-17. Structural equation modelling methods with bootstrapping were used to determine the role of LMX in the relationship between strengths use and work engagement. Findings showed that perceived organisational support for strengths use (POSSU) had a positive relationship with both LMX and work engagement, and that LMX had a positive relationship with work engagement. Furthermore, LMX mediated the relationship between POSSU and work engagement, indicating the important role of high quality leader- member exchange in organisations.     

Sustainable Environmental Development: The Moderating Role of Environmental Identity

This study develops and tests a model of Chinese residents' evaluation of government developmental activities based on identity theory and social exchange theory. The study proposes hypotheses regarding the influences of perceived benefits and environmental identity on residents' satisfaction with the government, the moderating role of environmental identity in the relationship between perceived benefits and satisfaction, and the effect of satisfaction on residents' support intentions. The model is tested with data collected from 474 residents of four cities in China. Results show environmental identity, along with perceived economic and environmental benefits, plays a very important role in residents' satisfaction with the government. The significant moderating role of environmental identity suggests differential effects of perceived benefits on satisfaction are observed based on the level of environmental identity. Satisfaction is found to be important for obtaining residents' support for the government and future environmental development. Implications of the study are discussed.     

The experience of receiving scholarship aid and its effect on future giving: a listening guide analysis

Why are there so many people who receive scholarship aid who do not give back to the schools that gave it? Social exchange theories grounded in the assumption of direct reciprocity have long been the framework used within higher education to understand donative behavior. As a result, conventional wisdom within higher education holds that recipients of scholarship aid will later donate money to the institution that provided it. However, the philanthropic data show that most aid recipients do not, in fact, give back. This study probes the underlying factors for this phenomenon by using the Listening Guide, a voice-centered relational method of discovery, to analyze and interpret interviews with 10 scholarship recipients. By providing a more robust understanding of the experience of receiving, the findings challenge some of the most basic psychological and sociological assumptions about giving and generosity within higher education.     

Mother–Toddler Affect Exchanges and Children's Mastery Behaviours during Preschool Years

This study examined the longitudinal relations of mother–child affect exchanges at 18 months with children's mastery motivation at 39 months. Observation and questionnaire data were collected from mother–child dyads when children were 18 months; 43 mothers again rated their children's mastery motivation at 39 months. Results suggested that after controlling for gender and the corresponding 18‐month mastery aspect, positive affect exchanges had long‐term positive relationships with children's persistence and competence, whereas dismissed affect exchanges had long‐term negative relationships with children's persistence and independent mastery. Findings suggest that children's autonomous mastery‐oriented endeavours have deep roots in their early mother–child affective interactions. Copyright © 2013 John Wiley & Sons, Ltd.     

Generating Trust in Congregations: Engagement,Exchange, and Social Networks

The relationship between religion and trust is complex and there is little consensus on why, in general, religious people appear to be more trusting than their unaffiliated peers. Most research on religion and trust focuses on differences between traditions and denominations, which offers rather limited insight into the genesis of trust for religious persons. In this study, we draw on recent theoretical developments in social psychology to explore how specific patterns of social interactions within congregations enhance within‐congregation trust among members to the benefit of both churches and individuals. Using survey data from the Portraits of American Life Study, we find that the positive relationship between religiosity and trust is driven less by religious beliefs or practices and more by particular characteristics of micro‐level processes that occur in churches (e.g., closeness of relationships to religious leaders, density of congregational ties, and both giving and receiving aid from other congregation members). In light of research on social learning and trust, we also discuss the potential benefits of this particularized trust for individuals’ levels of generalized trust.