Rethinking the Univariate Approach to Panel Unit Root Testing: Using Covariates to Resolve the Incidental Trend Problem

In an influential article, Hansen showed that covariate augmentation can lead to substantial power gains when compared to univariate tests. In this article, we ask if this result extends also to the panel data context? The answer turns out to be yes, which is maybe not that surprising. What is surprising, however, is the extent of the power gain, which is shown to more than outweigh the well-known power loss in the presence of incidental trends. That is, the covariates have an order effect on the neighborhood around unity for which local asymptotic power is negligible.     

Inter-ethnic relations in Mongolia and Inner Mongolia 1

The article deals with the development of minority policies in Mongolia since independence from China, and focuses on the effects that these policies have had on inter-ethnic relations. The main groups studied are the Khalkha Mongols, the Kazakhs, the Tuvans and the Han Chinese. The definitions of these groups as either ündesten or yastan have also varied over time, which has created theoretically interesting complexities. The article contains a sociolinguistic study of the inter-ethnic relations, with particular emphasis on education, culture, media and publishing. Furthermore, the tendency of the Tuvans to identify ethnically with the Mongols rather than with the Kazakhs is analyzed from the point of view of a sub-minority–majority identification theory. In Inner Mongolia, the inter-ethnic relations are problematic, and there are also severe tensions between the Mongols of Inner Mongolia and those of Mongolia. These ethnic policies have also played an important role in the development of the inter-state relations between Mongolia and the People's Republic of China.     

Do public pensions matter for health and wellbeing among retired persons? Basic and income security pensions across 13 Western European countries

Esser I, Palme J. Do public pensions matter for health and wellbeing among retired persons? Basic and income security pensions across 13 Western European countries Int J Soc Welfare 2010: ??: ??–??© 2010 The Author(s), Journal compilation © 2010 Blackwell Publishing Ltd and International Journal of Social Welfare. Mortality rates suggest that elderly people in the advanced welfare democracies have experienced dramatically improved health over the past decades. This study examined the importance of public pensions for self‐reported health and wellbeing among retired persons in 13 Organisation for Economic Cooperation and Development countries in 2002–2005. New public pension data make it possible to distinguish between two qualities of pension systems: ‘basic security’ for those who have no or a short work history, and ‘income security’ for those with a more extensive contribution record. For enhanced cross‐national comparison, relative measures of ill‐health and wellbeing were constructed to account for cultural bias in responses to survey questions and heterogeneity among countries in the general level of population health. Overall, better health is found in countries with more generous pensions, although the results are gendered; for women's health, high basic security of the pension system appears to be particularly important. Women's wellbeing also tends to be more dependent on the quality of basic security.     

On the Use of GLS Demeaning in Panel Unit Root Testing

One of the most well-known facts about unit root testing in time series is that the Dickey–Fuller (DF) test based on ordinary least squares (OLS) demeaned data suffers from low power, and that the use of generalized least squares (GLS) demeaning can lead to substantial power gains. Of course, this development has not gone unnoticed in the panel unit root literature. However, while the potential of using GLS demeaning is widely recognized, oddly enough, there are still no theoretical results available to facilitate a formal analysis of such demeaning in the panel data context. The present article can be seen as a reaction to this. The purpose is to evaluate the effect of GLS demeaning when used in conjuncture with the pooled OLS t-test for a unit root, resulting in a panel analog of the time series DF–GLS test. A key finding is that the success of GLS depend critically on the order in which the dependent variable is demeaned and first-differenced. If the variable is demeaned prior to taking first-differences, power is maximized by using GLS demeaning, whereas if the differencing is done first, then OLS demeaning is preferred. Furthermore, even if the former demeaning approach is used, such that GLS is preferred, the asymptotic distribution of the resulting test is independent of the tuning parameters that characterize the local alternative under which the demeaning performed. Hence, the demeaning can just as well be performed under the unit root null hypothesis. In this sense, GLS demeaning under the local alternative is redundant.     

Welfare states and inequality: Institutional designs and distributive outcome

Comparative studies on inequality have suffered from severe methodological problems, which mean that issues related to the causes of cross-national variation in inequality remain unresolved. In comparative welfare state research, the preoccupation with expenditure data has also meant that the welfare state itself has remained a black box. By examining new comparative data on social policy institutions and income inequality among different population groups, this study provides a more precise empirical basis for evaluating different, and divergent, theories on the welfare state and equality. Three cases will be used as illustrations: family policy and child poverty, unemployment benefits and poverty among working aged, and old-age pensions and poverty among the elderly. The results suggest that the key for understanding the effect of the welfare state lies in the institutional design—in the level and distribution of social rights. The importance of the welfare state for social stratification deserves to be given more attention by sociological research in the future.     

Managing Maturing Government‐Supported Networks: The Shift from Monitoring to Embeddedness Controls

In formal inter‐firm networks backed with significant financial support by policy‐makers, network boards are typically established to monitor network activities and to manage the tension between organizational and collective interests. This approach to network governance, however, builds mainly upon agency logic. We integrate agency with embeddedness theory to offer insights into the effectiveness of monitoring as a governance mechanism as networks mature and member firms become embedded. The analyses focus on two issues: (1) how network board characteristics typically associated with monitoring – board independence, board size and board compensation – influence network performance; and (2) how these effects are moderated by network age. The model is tested with longitudinal data on 53 government‐supported networks. In addition to the direct effects of board characteristics, network board size and board compensation have a stronger positive impact on network performance in younger networks than in more mature networks. This study provides insight into why the instituting of boards may prove successful for network‐level performance in newly formed government‐supported networks, but also explains why the positive effects from network board monitoring may diminish as networks grow older.     

Making social policy work for economic development: the Nordic experience

The Nordic welfare states offer some lessons in a development context. A main achievement has been sustainable poverty reduction. Another important lesson is that, while democratization often leads to greater pressures for social policy expansion, social policy can also contribute to democratization. The Nordic countries further demonstrate that is possible to unify social protection with a competitive and growth‐oriented economy. In a number of policy areas, particularly in relation to social services and labor market policy, the Nordic countries have also become leading modernizers. The women‐friendly dual‐earner model not only combats poverty among families with children, but also enables women to participate in the labor market. The future sustainability of the Nordic model of social policy hinges on the number of taxpayers that can be mobilized. In order to be successful in this, governments need to take a combined, or holistic, approach, and consider both micro motives and macro considerations.     

The Social Policy Indicators (SPIN) database

The Social Policy Indicators (SPIN) database provides the foundations for new comparative and longitudinal research on the causes behind, and the consequences of, welfare states and social citizenship rights. The SPIN database is oriented towards analyses of institutions as manifested in social policy legislation. To date, SPIN covers 40 countries, of which several have data on core social policy programmes from 1930. There are currently six data modules in SPIN, covering different social policy areas. The following research note describes the theoretical and conceptual basis of the SPIN project, as well as the data it contains.     

How a learning orientation affects drivers of innovativeness and performance in service delivery

Relying on organizational innovativeness for long-term growth and profitability can be difficult, time consuming, and expensive. In the context of service delivery of 395 strategic business units (SBU) in Israel's healthcare industry, this paper examines the role of a learning-orientation as a moderator in an integrative model of organizational innovativeness. We find moderation of the impacts of risk-taking, creativity, competitor benchmarking orientation, and environmental opportunities on innovativeness. Moreover, we find the influence on performance pronounced for high learning-oriented SBUs. The paper shows that learning orientation should be considered for understanding effective innovativeness work for competitive service delivery.     

Strategies for business model innovation: How firms reel in migrating value

This paper brings together firm-level research on business models and industry-level research on value migration to examine patterns of business model innovation. We draw on qualitative data from 14 cases and 68 interviews in the computer and telecommunications industries to demonstrate how business model innovation is sensitive to industry-wide forces of value migration. Based on our analysis we conclude that when value is rapidly migrating across industries and between firms, proactively substituting key elements of the primary business model provides a better fit with the new value landscape than launching secondary business models in parallel. We suggest four underlying mechanisms that link business model innovation, value migration and subsequent outcomes. Unpacking business model innovation allows us to discuss contingencies for the main business model strategies, specifically in terms of limitations to—and opportunities of—changing the primary business model and the practice of parallel business models.