Asymmetric social protection systems with migration

We study the consequences of the coexistence of different social protection systems on contribution rate levels and migration in a two-country model. Before any migration takes place, the levels of contribution rates are chosen by a representative elected in each country. The migration of each agent depends on her anticipation of other agents’ migrations. We show that the richest agents are attracted to the Bismarckian country. The poorest agents tend to migrate toward one country or the other depending on the Beveridgean country contribution rate. The Beveridgean country can set a higher contribution rate to limit the departures of rich agents.

Too Big to Learn: The Effects of Major Acquisition Failures on Subsequent Acquisition Divestment

We examine whether firms learn from their major acquisition failures. Drawing from a threat‐rigidity theoretical framework, we suggest that firms do not learn from their major acquisition failures. Furthermore, we hypothesize that host‐country experience reinforces the negative effects of major acquisition failures. Our research hypotheses are tested using an event history analysis of 741 acquisitions undertaken by French listed and non‐listed firms in the USA between January 1988 and December 2008. We use failure divestment (divestment resulting from acquisition failure) as a proxy for acquisition performance. Consistent with our theoretical framework, we find that major acquisition failures have a negative impact on future acquisition performance. Furthermore, we find that such negative effects are reinforced by firms’ host‐country experience.     

The role of carers in supporting the progress of care leavers in the world of work

The aim of this component of a preliminary cross‐national study (Ireland and Catalonia) of care leavers' experience in the world of work is to explore how carers may influence the entry of young people in care into the world of work and how they may also influence the young people's progress in that world. A total of 22 care leavers, aged 23–33 years, were recruited on the basis of their having substantial employment experience since leaving care. Evidence from the interviews reveals the importance of the role of carers in the work‐related progression of the young care leavers, especially in relation to gaining work experience while they were still in care. The qualitative analysis shows that carers were influential in promoting (and sometimes hindering) progress in work and education. Carers were often reported to play an important role in opening up opportunities, giving support (modelling skill development, giving practical help, etc.), being role models and cultivating the young person's agency. On the basis of these findings, we propose an initial conceptualization of carer roles in positive work support.     

Empirical characteristic function tests for GARCH innovation distribution using multipliers

Goodness-of-fit tests for the innovation distribution in GARCH models based on measuring deviations between the empirical characteristic function of the residuals and the characteristic function under the null hypothesis have been proposed in the literature. The asymptotic distributions of these test statistics depend on unknown quantities, so their null distributions are usually estimated through parametric bootstrap (PB). Although easy to implement, the PB can become very computationally expensive for large sample sizes, which is typically the case in applications of these models. This work proposes to approximate the null distribution through a weighted bootstrap. The procedure is studied both theoretically and numerically. Its asymptotic properties are similar to those of the PB, but, from a computational point of view, it is more efficient.     

Do the rich save more in Latin America?

This paper reports evidence that the savings rate of the rich is higher than that of the poor in Brazil, Chile, Costa Rica, Ecuador, Honduras, Mexico, Panama, Paraguay and Peru. On average, the difference between the fifth and fourth income quintile groups is 7 percentage points. No differences between income groups are found in Uruguay and the results for Argentina and Colombia are not robust to estimation alternatives. The key methodological step is to construct a measure of lifetime income. Current income is not a good proxy since it is affected by phases of the life cycle and transitory shocks. We implement a two-stage procedure based on the education level of the household head and the education level of his/her partner. Several robustness exercises are reported for different age groups, inclusion/exclusion of outliers and for a wealth index based on homeownership, home appliances and other household owned assets.     

On suicide bombings: questioning rationalist models and logics of gender

The theories of rational choice have been widely used in analysing suicide bombings. Such a use is here critically examined along three lines. First, the limits of this theoretical framework when applied to sacrificial violence are assessed and especially the internal contradictions which appear with the notion of ‘symbolic posthumous rewards’. Second, differences emerge in the use of rational choice theory when the focus is upon female suicide bombers. Indeed, deprivation theories come then to the fore, the idea of personal crisis and the impact of patriarchal social relationships. This switch in the analysis, which does not seem based on differences in the data, confirms gender studies which underline the specific difficulty to envisage female political violence. Finally, to go beyond both reductionisms, a compared analysis of suicide attacks in Chechnya, Iraq and Israel/Palestine is proposed. It aims at restituting the context of action and the narratives at work, making a clear distinction between two levels of analysis, the one of the organizations, which can largely be understood in terms of their strategic rationale, and that of the suicide bombers themselves, for whom it seems more heuristic to use the concepts of narratives and horizons of expectation.     

A Dyadic Perspective on Childhood Maltreatment for Women With Provoked Vestibulodynia and Their Partners: Associations With Pain and Sexual and Psychosocial Functioning

Childhood maltreatment is robustly associated with adult-onset vulvodynia, a common form of female genito-pelvic pain/penetration disorder. However, little is known about the impact of childhood maltreatment on current sexual, psychological, and relationship adaptation for couples with provoked vestibulodynia (PVD). This study examined the associations between childhood maltreatment and sexual and psychosocial functioning and pain in women with PVD, the most common subtype of vulvodynia, and their partners. A total of 49 couples (M_age women = 27.80, SD = 6.05; M_age men = 30.04; SD = 6.48) with PVD completed the Childhood Trauma Questionnaire (CTQ), as well as measures of sexual functioning, couple satisfaction, and anxiety. Women also reported on their pain during intercourse. Analyses were guided by the actor–partner interdependence model. Women’s higher reports of childhood maltreatment were associated with their lower sexual functioning and higher anxiety. Partners’ higher reports of childhood maltreatment were associated with their lower sexual functioning, lower couple satisfaction, and higher anxiety, as well as women’s lower couple satisfaction and higher anxiety. Both women’s and partners’ higher reports of childhood maltreatment were associated with higher affective pain for women. Findings suggest childhood maltreatment experienced by women with PVD and their partners should be considered as part of treatment planning.     

Species occupancy estimation and imperfect detection: shall surveys continue after the first detection?

Species occupancy, the proportion of sites occupied by a species, is a state variable of interest in ecology. One challenge in its estimation is that detection is often imperfect in wildlife surveys. As a consequence, occupancy models that explicitly describe the observation process are becoming widely used in the discipline. These models require data that are informative about species detectability. Such information is often obtained by conducting repeat surveys to sampling sites. One strategy is to survey each site a predefined number of times, regardless of whether the species is detected. Alternatively, one can stop surveying a site once the species is detected and reallocate the effort saved to surveying new sites. In this paper we evaluate the merits of these two general design strategies under a range of realistic conditions. We conclude that continuing surveys after detection is beneficial unless the cumulative probability of detection at occupied sites is close to one, and that the benefits are greater when the sample size is small. Since detectability and sample size tend to be small in ecological applications, our recommendation is to follow a strategy where at least some of the sites continue to be sampled after first detection.