REGRESSION WITH MISSING YS: AN IMPROVED STRATEGY FOR ANALYZING MULTIPLY IMPUTED DATA

When fitting a generalized linear model—such as linear regression, logistic regression, or hierarchical linear modeling—analysts often wonder how to handle missing values of the dependent variable Y . If missing values have been filled in using multiple imputation, the usual advice is to use the imputed Y values in analysis. We show, however, that using imputed Y s can add needless noise to the estimates. Better estimates can usually be obtained using a modified strategy that we call multiple imputation, then deletion (MID). Under MID, all cases are used for imputation but, following imputation, cases with imputed Y values are excluded from the analysis. When there is something wrong with the imputed Y values, MID protects the estimates from the problematic imputations. And when the imputed Y values are acceptable, MID usually offers somewhat more efficient estimates than an ordinary MI strategy.     

Wirkprinzipien handlungsorientierter Beratungs- und Trainingsmethoden

The article suggests effect principles of action-oriented methods for organizational counselling and training. It is shown that action-oriented methods use “surplus reality” (a concept developed by J. L. Moreno) as a constitutive medium in which they duplicate organizational reality by means of scenic embodiment. The authors show how action-oriented methods derive their specific potential for the depiction and reflection of work-related problems in organizational counselling, training, supervision and coaching from this surplus reality.     

The multifaceted nature of social practices: A review of the perspectives on practice-based theory building about organizations

A vibrant body of literature on social practices has developed rapidly in recent years. However, a systematic analysis of the underlying perspectives that shape the way practice-based scholars contribute to theory building about organizational phenomena has escaped scholarly attention. It is of pivotal importance to examine the multifaceted nature of social practices and understand the process by which new practice-based knowledge is developed. Our study addresses this gap by disentangling how researchers have adopted the knowledge, materiality, ethics, and politics perspectives that – as past influential work has informed us – are particularly relevant to practice-based theory building. In so doing, we categorize the body of literature into themes that correspond to the organizational phenomena examined by social practice scholars: practice boundaries and coordination of work, technology at work, strategy formation, local particulars structuring everyday work, and transformation of work practices. By uncovering how scholars adopt the four perspectives within each theme, our review shows that scholars (i) predominantly adopt the knowledge perspective, (ii) neglect the politics perspective when looking ‘inside’ a social practice, (iii) strikingly de-emphasize the ethics perspective, and (iv) isolate each of the four perspectives used in theory building. We then examine in detail the implications of our work for future research on social practices and conclude with a number of theoretical and methodological suggestions.     

Wage inequality and team production: An experimental analysis

Numerous survey studies report that human resource managers curb wage inequality with the intent to avoid detrimental effects on workers’ morale. However, there exists little controlled empirical evidence demonstrating that horizontal social comparisons and wage inequality have adverse effects on worker behavior. In this paper, we present data from a laboratory experiment that studies the impact of wage inequality on participation and effort choices in team production. Overall, we do not find evidence that wage inequality has a significant impact on either participation or effort choices.     

Elder abuse in nursing homes: an ecological perspective

Population trends suggest that the next 20 years will witness a dramatic increase in the adult population aged 65 and older. Projected increases in the elderly population are expected to significantly increase the stress on family and professional caretakers. Stress, in the context of caregiving relationships, is a risk factor associated with increased prevalence of elder abuse in familial and institutional settings. As increasing numbers of older adults are moved from family caregiving to nursing home care settings, it becomes important to identify the pattern of elder abuse risk factors in nursing home facilities. An ecological model is proposed for better understanding the risk factors associated with elder abuse in nursing homes and the complex interaction of individual/person characteristics and contextual factors in institutional elder abuse. An ecological perspective to institutional elder abuse provides a framework for guiding and informing future research on the risk factors of nursing home abuse and, in turn, for the development of effective interventions and relevant social policies.     

‘Belonging’ to a Virtual Research Centre: Exploring the Influence of Social Capital Formation Processes on Member Identification in a Virtual Organization

Identification, a person's sense of belonging, is thought to have positive outcomes because those who identify strongly will be more motivated to achieve organizational goals. This study applies a social capital lens in order to highlight how different social capital formation processes contribute to member identification, with a focus on virtual organizations where dispersed membership may preclude face‐to‐face interactions. The study provides a rare opportunity to explore variation in identification in a single organizational context. The results highlight how some dimensions of social capital augment each other and affect identification through the four conditions that influence social capital development: time, interdependence, interaction and closure. The study suggests that, while creating interdependence and an array of means for interaction support the development of both social capital and identification, not all members of the organization need to feel equally connected. Partial closure appears beneficial for information flows and ‘renewal’ of the virtual organization.     

A family of bivariate distributions with non-elliptical contours

In this paper, a family of copulas with two parameters is proposed and its dependence analysis is performed. The corresponding family of bivariate distributions with specified marginals is constructed. For normal marginals, the new distributions are non-elliptical and can be applied in data analysis. They provide various alternative hypotheses for testing normality. Finally, an example is given.