CAN ENTRY OR EXIT EVENT STUDIES INFORM HORIZONTAL MERGER ANALYSIS? EVIDENCE FROM GROCERY RETAILING

This study estimates how prices change following the entry and exit of grocery retailers. We estimate the effects of entry (exit) by comparing affected markets to a set of unaffected markets using both a difference‐in‐difference estimator and a synthetic control estimator. We find that entry typically results in reduced prices. More surprisingly, we find that exit is frequently associated with falling prices. Our estimated effects of entry on grocery prices are similar in magnitude to estimates of merger price effects in the supermarket industry. This finding suggests that entry event studies may be a useful tool for horizontal merger analysis. (JEL L11, L4, L81)     

Verarmungsrisiken nach kritischen Lebensereignissen in Deutschland und den USA

We study how the impact of job loss, sickness, retirement, and family dissolution on the risk of relative income poverty differs between Germany and the United States, and whether the impact of these events has changed between 1980 and 2009. Americans are more likely than Germans to enter poverty after any of the four events, yet they also recover more quickly from job loss and family dissolution. Comparisons over time do not indicate a secular rise in the impact of critical life events on poverty risks, but our results show that poverty trajectories are subject to stronger cyclical fluctuations in the United States: Through its emphasis on market mechanisms, the liberal American welfare state raises the importance of (re-)employment opportunities for coping with the consequences of adverse life events. The absence of clear long-term trends leads to a reassessment of common views about welfare state change such as Jacob Hacker??s thesis of a ??Great Risk Shift?? or the notion of an ??Americanization?? of Continental European welfare states. So far, there is also little evidence that the often claimed recalibration of welfare states towards ??new social risks?? has alleviated the adverse economic consequences of family dissolution.     

Induced, endogenous and exogenous centrality

Centrality measures are based upon the structural position an actor has within the network. Induced centrality, sometimes called vitality measures, take graph invariants as an overall measure and derive vertex level measures by deleting individual nodes or edges and examining the overall change. By taking the sum of standard centrality measures as the graph invariant we can obtain measures which examine how much centrality an individual node contributes to the centrality of the other nodes in the network, we call this exogenous centrality. We look at exogenous measures of degree, closeness and betweenness.     

Can a voluntary web survey be useful beyond explorative research?

In this paper, we compare the estimates of earnings determinants based on the non-probabilistic WageIndicator web survey with those based on the widely used, representative EU Study of Income and Living Conditions survey. Using 10 years of Dutch data, we show that there exists an established segment of predominantly junior workers from which the respondents of the WageIndicator survey are disproportionally drawn. In consequence, the composition of WageIndicator sample tends to retain key characteristics over the years, even though it lacks a probabilistic sampling frame. We show that the estimates produced on the basis of an extended Mincerian earnings model using the two data sources are qualitatively similar. In line with much of the literature, however, the two sets of estimates do not pass the formal statistical test of equality. Nonetheless, when we examine only the subsample of junior workers, the statistical testing does not detect a statistically significant difference between the two datasets in many instances. To our knowledge, ours is the first paper showing such statistical evidence for comparability of a web survey based with a widely used representative data source.     

Groups and individuals: conformity and diversity in the performance of gendered identities

The nature and role of social groups is a central tension in sociology. On the one hand, the idea of a group enables sociologists to locate and describe individuals in terms of characteristics that are shared with others. On the other, emphasizing the fluidity of categories such as gender or ethnicity undermines their legitimacy as ways of classifying people and, by extension, the legitimacy of categorization as a goal of sociological research. In this paper, we use a new research method known as the Imitation Game to defend the social group as a sociological concept. We show that, despite the diversity of practices that may be consistent with self‐identified membership of a group, there are also shared normative expectations – typically narrower in nature than the diversity displayed by individual group members – that shape the ways in which category membership can be discussed with, and performed to, others. Two claims follow from this. First, the Imitation Game provides a way of simultaneously revealing both the diversity and ‘groupishness’ of social groups. Second, that the social group, in the quasi‐Durkheimian sense of something that transcends the individual, remains an important concept for sociology.     

The Global Compacts on Refugees and for Safe,Orderly and Regular Migration: Introduction to the Special Issue

In December 2018, the UN General Assembly adopted two Global Compacts: The Global Compact on Refugees (GCR) and the Global Compact for Safe, Orderly and Regular Migration (GCM). These two compacts, while non‐binding and aspirational in nature, offer the first widely‐accepted new normative frameworks on the movement of people since the ratification of the 1951 refugee convention and its 1967 protocol. This special issue of International Migration aims to analyse the way in which these two compacts were negotiated, examine their potential impact in a number of areas, and compare the way they deal with common themes such as gender, civil society and security. This introductory article describes the background and the process of negotiating the global compacts, provides a short summary of the articles included in this special issue, and highlights gaps in the two compacts that are not elsewhere discussed herein.     

Migration,Livelihood Strategies,and Agricultural Outcomes: A Gender Study in Rural China

In this study we examine whether the gender composition of migrants from rural households affects household economic strategies and agricultural productivity, which is the fundamental economic activity for rural Chinese. Using data from the 2010 and 2012 Chinese Family Panel Studies, this study treats households as the unit of analysis. Our results show that households with migrants are less likely to engage in agricultural activities or operate small businesses than households with no migrants. However, households with female migrants are less likely to engage in agricultural activities to a greater extent than those with male migrants, whereas the latter pose an obstacle to running small family businesses. This suggests that women may have to shoulder the burden of agricultural work when men migrate, whereas having male migrants from the households hampers households from engaging in local nonagricultural activities. Finally, although having male migrants who have left does not significantly discourage households from continuing agricultural activities, it does reduce agricultural productivity.     

Determinanten des Wiedereinstiegs von Müttern in den Arbeitsmarkt in Vollzeit oder Teilzeit

This paper deals with the question which determinants influence the re-entry of mothers on the labor market after the first childbirth. Contrary to existing studies it is possible to distinguish empirically between full time and part time employment after re-entry by employing the newly available BASiD-data. Theoretical arguments indicate that women decide deliberately for a part or full time job due to labor market restriction, their household und family situation and institutional rules which vary in time. Empirically this paper focuses on mothers in West Germany because the data includes a long observation period before reunification. Based on event history models we can show that the determinants for full and part time re-entries differ substantially. Hence it can be reasoned that full and part time jobs for re-entry after birth are not simple substitutes for the women.     

Toward Mutual Support: A Task Analysis of the Relational Justice Approach to Infidelity

Gender, culture, and power issues are intrinsic to the etiology of infidelity, but the clinical literature offers little guidance on how to work with these concerns. The Relational Justice Approach (RJA) to infidelity (Williams, Family Process, 2011, 50, 516) uniquely places gender and power issues at the heart of clinical change; however, this approach has not been systematically studied. Therefore a qualitative task analysis was utilized to understand how change occurs in RJA. The findings indicated four necessary tasks: (a) creating an equitable foundation for healing, (b) creating space for alternate gender discourse, (c) pursuing relational responsibility of powerful partner, and (d) new experience of mutual support. Therapists' attention to power dynamics that organize couple relationships, leadership in intervening in power processes, and socio‐cultural attunement to gender discourses were foundational to this work. These findings help clarify the processes by which mutual healing from the trauma of infidelity may occur and offer empirically based actions that therapists can take to facilitate mutual support.