Small Group Predictions on an Uncertain Outcome: The Effect of Nondiagnostic Information

Research has established that exposure to a combination of diagnostic (i.e., relevant) and nondiagnostic (i.e., irrelevant) information results in predictions that are more regressive than predictions based on diagnostic information (Hackenbrack, 1992; Hoffman and Patton, 1997). This phenomenon has been labeled the dilution effect (e.g., Tetlock and Boettger, 1989) and has been documented when individuals make predictions. This study tests for the dilution effect when small groups make predictions, and examines the effect of using a procedure designed to reduce the dilution effect. Results indicate that group predictions are influenced by nondiagnostic information in the same manner as are individual predictions, and allowing participants to rate the diagnosticity of information prior to making predictions does not reduce the dilution effect.     

论地方高校科研发展中的几个问题

地方高校科研发展首先要解决好定位问题,在此基础上,要以人才培养、基地建设和科研团队建设为核心,营造良好的科研环境,促进科研发展和科研特色的培育。     

应用白纸测图技术测绘大比例尺草地群落分布图的探讨

在牧区生产方面 ,大比例尺草地植被分布图是非常重要的基础资料 ,对于划区轮牧、草场轮刈以及草地权属落实等都是最基础的档案 ,然而大比例尺植被图 ( 1:50 0 0 )的测绘却很少有人探讨 ,本文从生产发展需要出发 ,试用测绘学方法白纸测图技术 ,进行 1:50 0 0植物群落分布图的测绘研究 ,此方法可以概括为草群分类、样地选择、界线勾绘、建立控制网、样地扩展、分板实测、联绘成图等步骤     

Smoking cessation care during pregnancy: A qualitative exploration of midwives’ challenging role

ProblemThe majority of South Australian pregnant women who smoke do not quit during pregnancy. Additionally, the prevalence of smoking is higher among pregnant women living in socially disadvantaged areas.BackgroundUnderstanding challenges in midwives’ provision of smoking cessation care can elucidate opportunities to facilitate women’s smoking cessation.AimWe aimed to understand midwives’ perspectives on current practices, perceived barriers and facilitators to delivery of smoking cessation care, and potential improvements to models of smoking cessation care.MethodsAn exploratory qualitative research methodology and thematic analysis was used to understand the perspectives of midwives in five focus groups.FindingsFour themes were generated from the data on how midwives perceived their ability to provide smoking cessation care: Tensions between providing smoking cessation care and maternal care; Organisational barriers in the delivery of smoking cessation care; Scepticism and doubt in the provision of smoking cessation care; and Opportunities to enable midwives’ ability to provide smoking cessation care.DiscussionA combination of interpersonal, organisational and individual barriers impeded on midwives’ capacities to approach, follow-up and prioritise smoking cessation care. Working with women living with disadvantage and high rates of smoking, the midwife’s role was challenging as it balanced delivering smoking cessation care without jeopardising antenatal care.ConclusionProviding midwives with resources and skills may alleviate the sense of futility that surrounds smoking cessation care. Provision of routine training and education could also improve understandings of the current practice guidelines.     

The Time Series and Cross‐Section Asymptotics of Dynamic Panel Data Estimators

In this paper we derive the asymptotic properties of within groups (WG), GMM, and LIML estimators for an autoregressive model with random effects when both T and N tend to infinity. GMM and LIML are consistent and asymptotically equivalent to the WG estimator. When T/N→ 0 the fixed T results for GMM and LIML remain valid, but WG, although consistent, has an asymptotic bias in its asymptotic distribution. When T/N tends to a positive constant, the WG, GMM, and LIML estimators exhibit negative asymptotic biases of order 1/T, 1/N, and 1/(2N−T), respectively. In addition, the crude GMM estimator that neglects the autocorrelation in first differenced errors is inconsistent as T/N→c>0, despite being consistent for fixed T. Finally, we discuss the properties of a random effects pseudo MLE with unrestricted initial conditions when both T and N tend to infinity.     

有关品牌文化内涵及影响因素的探索性研究

随着商品经济的发展和市场竞争的日益激烈,品牌文化的建设已经成为一个品牌成功的关键.本研究基于扎根理论对品牌文化的概念模型进行了探索性研究.通过文献分析和质的研究(32个深度访谈、四组焦点团体访谈)相结合的方法,本研究认为品牌文化包括企业文化、产品与服务、品牌个性和理念以及品牌归属四个维度.品牌文化以企业文化为基础,以产品和服务为载体,通过理念、个性、声誉等品牌精神的塑造,最终使得用户对品牌产生归属感.在这一过程中,品牌文化的形成受到企业营销手段、社会潮流和消费者的共同影响.本研究为品牌文化的定量研究打下了坚实的基础,对品牌研究和营销实践都具有重要意义.     

Countervailing institutional forces: corporate governance in Turkish family business groups

This longitudinal study investigates the impact of national and international pressures to improve corporate governance in an emerging economy from an institutional theory perspective. Recently, family business groups (FBGs), the dominant form of organizing in emerging economies, have been criticized by policy makers for their poor governance structures. A common recommendation to FBGs has been increasing the number of independent, outsider directors on their boards. Thus, change in the board compositions of the quoted subsidiaries of the six biggest FBGs is analyzed over 2002–2006. One-way-ANOVA and t-tests were used as statistical tools. Findings reveal that there has not been a statistically significant change in board compositions over the research period. FBGs were found to resist institutional pressures through ‘avoidance’, ‘defiance’ and “manipulation” strategies due to the absence of coercive pressures and multiple forms of ‘institutional work’ for change.     

基于调节焦点理论的领导对下属创造力影响机理研究

本研究从心理学的调节焦点理论切入,构建了基于调节焦点理论的领导对下属创造力影响机理模型。具体探讨领导的行为示范、语言框架及反馈,通过对个体调节焦点与群体共享调节焦点两个层面的共同引导,进而影响下属创造力的作用过程。本研究将丰富并厘清人们对领导提升下属创造力的影响路径与作用规律的认识,并为领导通过日常管理来激发下属创造力提供借鉴与指导。     

Rivalry and strategic groups: what makes a company a rival?

Strategic group literature has generated a significant amount of research over recent decades. However, the rivalry implications of strategic group have remained unclear. This paper analyses rivalry and strategic groups in the house building industry in a small town from a cognitive approach. We consider rivalry as a subjective and directional phenomenon. Estimating rivalry as the direct identification of competitors we try to explain whether similarity affects rivalry and what factors make a company a “rival”. Results show that perceived rivalry is strongly related to size, past performance, subjective similarity and strategic group structure.

From social ties to embedded competencies: the case of business groups

Our current views of economic competition are still rooted in the imagery of the isolated firm that transacts with its buyers, suppliers, and competitors via largely anonymous factor and product markets. Yet this view is fundamentally at odds with the growing importance of business groups in the global economy. We thus need a reconceptualized version of our idea of economic competition, which is capable of explaining competitive advantage at the group-versus-group rather than firm-versus-firm level of analysis. In the present paper we build on insights derived from organizational sociology and organizational economics to develop a business group-level theory of competition and competitive advantage based on embedded competencies.