Interventions for Internationally Adopted Children and Families: A Review of the Literature

Internationally adopted (IA) children are at increased risk for health-related, developmental, and behavioral difficulties. This article reviews the literature on various interventions currently used with IA populations; including health-related interventions provided by medical specialists, preparation programs provided by adoption agencies and other social service organizations, treatments for attachment and behavioral disorders, psychoeducational services, programs designed to improve children’s care prior to adoption, and parent-based initiatives. Surprisingly, very little systematic information exists regarding the effectiveness of interventions designed to prevent and remediate these difficulties in IA children. Recommendations for future research activity and for best practice approaches to intervention are discussed.     

The null hypothesis of (common) jumps in case of irregular and asynchronous observations

This paper proposes novel tests for the absence of jumps in a univariate semimartingale and for the absence of common jumps in a bivariate semimartingale. Our methods rely on ratio statistics of power variations based on irregular observations, sampled at different frequencies. We develop central limit theorems for the statistics under the respective null hypotheses and apply bootstrap procedures to assess the limiting distributions. Furthermore, we define corrected statistics to improve the finite sample performance. Simulations show that the test based on our corrected statistic yields good results and even outperforms existing tests in the case of regular observations.     

Citizen‐agency versus state‐agency at the frontline in prisons and probation services: A systematic literature review

Street‐level bureaucrats play a key role in the delivery of public services to the citizens with whom they interact. Using the Preferred Reporting Items for Systematic Review and Meta‐Analyses approach, we rely on a street‐level perspective to report a systematic review of 46 studies about officer–offender interactions in prisons and probation services. In doing so, we examine how correctional officers articulate state‐agency – whereby they focus on the implementation of rules and policies – and citizen‐agency – whereby their decisions regarding offenders are based on judgements of offenders' worth. Our results provide evidence that frontline work in prisons and probation services stems from a mix of citizen‐ and state‐agencies in which the former is prioritized over the latter: when rule enforcement allows it, correctional officers often make discretionary decisions based on professional judgements rooted in professional norms. In this respect, the managerial and actuarial approach to risk management and public protection involved by contemporary correctional reforms comes with new role expectations that conflict with correctional officers' rehabilitative ideals. At the same time, the literature provides many instances of officers coping with workload in order to meet policy objectives and organizational demands while maintaining satisfactory working conditions. In other words, there is an increasingly elaborate and fragile articulation of state‐ and citizen‐agencies at the frontline, in prisons and probations services. We conclude with some implications and an agenda for future research.     

Estimation for the Generalized Pareto Distribution Using Maximum Likelihood and Goodness of Fit

In this article, we introduce a new estimator for the generalized Pareto distribution, which is based on the maximum likelihood estimation and the goodness of fit. The asymptotic normality of the new estimator is shown and a small simulation. From the simulation, the performance of the new estimator is roughly comparable with maximum likelihood for positive values of the shape parameter and often much better than maximum likelihood for negative values.     

What to Make of the Liberal Paradox?

Sen's Liberal Paradox has received a good deal of attention in the literature. However, it is worth re-opening the discussion since the solutions offered so far have serious problems and since there is more to say about the nature of the problem displayed by the Liberal Paradox. I propose a new solution to the paradox in the following sense: First, I argue that its range of applicability is not very broad. Second, there is nothing paradoxical about a conflict of the principles involved in the Liberal Paradox. (Nagel's thesis of the ``fragmentation of value' is important to make this point.) Third, I make a recommendation about how to remove conflicts when they occur in a restricted class of cases. For the other cases, no recommendation of similar appeal is available. But in the light of the first point, the availability of a generally applicable recommendation was not to be expected.     

TRANSFERABLE CONTROL

In this paper, we introduce the notion of transferable control, defined as a situation where one party (the principal, say) can transfer control to another party (the agent) but cannot commit herself to do so. One theoretical foundation for this notion builds on the distinction between formal and real authority introduced by Aghion and Tirole, in which the actual exercise of authority may require noncontractible information, absent which formal control rights are vacuous. We use this notion to study the extent to which control transfers may allow an agent to reveal information regarding his ability or willingness to cooperate with the principal in the future. We show that the distinction between contractible and transferable control can drastically influence how learning takes place: with contractible control, information about the agent can often be acquired through revelation mechanisms that involve communication and message‐contingent control allocations; in contrast, when control is transferable but not contractible, it can be optimal to transfer control unconditionally and learn instead from the way in which the agent exercises control. (JEL: C70, C72, D23, L2)