The Opportunities for Adopting Inflation Targeting in Tunisia: a Cointegration Study and Transmission Channels of Monetary Policy

The major aim of this paper is to analyze, at a first stage, the trend of inflation in Tunisia, then to conduct an overview of inflation measures and, to develop a simple inflation forecasting by applying the Box and Jenkins (Time series analysis: forecasting and control. Holden day, San Francisco, 1976) method. It is essential to understand the dynamics of the core and global inflation, and to explore the relationships that may undermine cointegration inflation via the Engle and Granger (Econometrica 55:251–276, 1987) and Johansen (J Econ Dyn Control 12:231–254, 1988) methods on control variables during a recent monthly period, ranging from 1996 to 2006. Concerning the Tunisian case, and by retracing the similar study conducted by Ndiyae and Badji (Les déterminants de l’inflation au Sénégal: Approche par les fonctions de consommations, Agence nationale de la statistique et de la méthodologie, 2008), the results have shown the existence of just a single cointegration relationship between the variables concerning a short term and long-term dynamics. Moreover, within the same spirit, a structural analysis based on structural VAR of Blanchard and Quah (Am Econ Rev 79:655–673, 1989) method has managed to identify the shocks impact on the supply and demand variables on the consumer prices index through the study of transmission channels of monetary policy. The outcomes have exposed that the relatively low impact degree of control variables on inflation in Tunisia is consistent with those carried out by Gupta and Komen (Time aggregation and the contradictions with causal relationships: can economic theory come to the rescue? 2008).     

Assessment of the distributive impact of national trade reforms in Brazil

This paper quantifies the distributional and poverty effects of trade liberalization in Brazil using household survey data. We estimate the consumption and labor impact of Mercosur trade reform following the methodology suggested by Porto (J Int Econ 70:140–160, 2006) and Nicita (J Dev Econ 89(1):19–27, 2009). Results show that trade liberalization had a pro-poor effect in Brazil. This result is largely explained by two major observations: the fact that consumption good prices decreased after Brazil entered Mercosur and a close to zero labor income effect. We find that poverty decreased after national trade liberalization (both for women and men). Additionally, we obtained no significant inequality effects after national trade reforms.     

Propositionwise judgment aggregation: the general case

In the theory of judgment aggregation, it is known for which agendas of propositions it is possible to aggregate individual judgments into collective ones in accordance with the Arrow-inspired requirements of universal domain, collective rationality, unanimity preservation, non-dictatorship and propositionwise independence. But it is only partially known (e.g., only in the monotonic case) for which agendas it is possible to respect additional requirements, notably non-oligarchy, anonymity, no individual veto power, or extended unanimity preservation. We fully characterize the agendas for which there are such possibilities, thereby answering the most salient open questions about propositionwise judgment aggregation. Our results build on earlier results by Nehring and Puppe (Strategy-proof social choice on single-peaked domains: possibility, impossibility and the space between, 2002), Nehring (Oligarchies in judgment aggregation: a characterization, 2006), Dietrich and List (Soc Choice Welf 29(1):19–33, 2007a) and Dokow and Holzman (J Econ Theory 145(2):495–511, 2010a).     

Generalized average rules as stable Nash mechanisms to implement generalized median rules

We consider a problem in which a policy is chosen from a one-dimensional set over which voters have single-peaked preferences. While Moulin (Public Choice 35:437–455, 1980) and others subsequent works have focused on strategy-proof rules, Renault and Trannoy (Mimeo 2011) and Renault and Trannoy (J Pub Econ Theory 7:169–199, 2005) have shown that the average rule implements a generalized median rule in Nash equilibria and provide an interpretation of the parameters in Moulin’s rule. In this article, we first extend their result by showing that a wide range of voting rules which includes the average rule can implement Moulin’s rule in Nash equilibria. Moreover, we show additionally that within this class, generalized average rules are Cournot stable. That is, from any strategy profile, any best response path must converge to a Nash equilibrium.     

Expected fair allocation in farsighted network formation

I consider situations in which a group of players extracts a value if they organise themselves in different network structures, and I define a solution concept to describe the decentralised decision that determines the network formation process and the allocation of the value. I demonstrate that there is a solution concept satisfying discounted expected versions of pairwise stability (Jackson and Wolinsky J Econ Theory 71:44–74, 1996) and fairness (Myerson Math Oper Res 2:225–229, 1977a) jointly with the requirement that the allocation rule be component efficient if the players’ discount factor is sufficiently low.     

A new approach for bounding awards in bankruptcy problems

The solution for the contested garment problem, proposed in the Babylonic Talmud, suggests that each agent should receive at least some part of the resources whenever the claim exceeds the available amount. In this context, we propose a new method to define lower bounds on awards, an idea that has underlied the theoretical analysis of bankruptcy problems from its beginning (O’Neill, Math Soc Sci 2:345–371, 1982) to present day (Dominguez and Thomson, Econ Theory 28:283–307, 2006). Specifically, starting from the fact that a society establishes its own set of commonly accepted equity principles, our proposal ensures to each agent the smallest amount she gets according to all the admissible rules. We analyze its recursive application for different sets of equity principles.     

Modeling resource flow asymmetries using condensation networks

This paper examines strict Nash networks in the noncooperative directed flow model of Bala and Goyal (Econometrica 68(5):1181–1230, 2000) with partner heterogeneity (payoff of a player in a link depends on the identity of her link partner). We focus on the asymmetries with regard to the resources obtained by players. Using the notion of condensation networks, we partition the population into groups of players who obtain the same resources and order these groups according to the resources they obtain. We show that the partner heterogeneity assumption impacts the strict Nash networks asymmetries in a different way than Galeotti (Econ Theory 29(1):163–179, 2006) player heterogeneity assumption (the payoff of a player in a link depends on her own identity).     

The relation between monotonicity and strategy-proofness

The Muller–Satterthwaite Theorem (J Econ Theory 14:412–418, 1977) establishes the equivalence between Maskin monotonicity and strategy-proofness, two cornerstone conditions for the decentralization of social choice rules. We consider a general model that covers public goods economies as in Muller–Satterthwaite (J Econ Theory 14:412–418, 1977) as well as private goods economies. For private goods economies, we use a weaker condition than Maskin monotonicity that we call unilateral monotonicity. We introduce two easy-to-check preference domain conditions which separately guarantee that (i) unilateral/Maskin monotonicity implies strategy-proofness (Theorem 1) and (ii) strategy-proofness implies unilateral/Maskin monotonicity (Theorem 2). We introduce and discuss various classical single-peaked preference domains and show which of the domain conditions they satisfy (see Propositions 1 and 2 and an overview in Table 1). As a by-product of our analysis, we obtain some extensions of the Muller–Satterthwaite Theorem as summarized in Theorem 3. We also discuss some new “Muller–Satterthwaite preference domains” (e.g., Proposition 3).     

Inequality and the time structure of earnings: evidence from Germany

This paper studies the relationships between annual and subannual inequality and mobility during the course of the year. We apply an exact decomposition framework as outlined in Wodon and Yitzhaki (Econ Bull 4:1–8, 2003), and in Yitzhaki and Wodon (Research on Economic Inequality 12:179–199, 2004). Earnings records of pension insurants in Germany serve as the database. The long time horizon of our database allows us to investigate the stability and robustness of the parameters of the decomposition over time. Specifically, we show that the mobility component of the decomposition, as measured by Gini correlation coefficients, changes over the observation period. This makes it difficult to predict the impact of the income accounting period on inequality in a more general context. Thus, it is of paramount importance to use income data from a uniform accounting period in distributional analyses.     

Are Gambling Related Cognitions in Adolescence Multidimensional?: Factor Structure of the Gambling Related Cognitions Scale

The present study examined the factor structure of the Gambling Related Cognitions Scale (GRCS); (Raylu and Oei in Addiction 99:757–769, 2004) in a large sample of adolescents (N = 1,490) between the ages of 16 and 18 years (630 males, 860 females) attending several high schools in central Ontario. Problem gambling was measured using the DSM-IV-J (Fisher in J Gambl Stud 8:263–285, 1992). A 5-factor GRCS model was found to have the best fit to the data, and gambling-related cognitions were found to be powerful predictors of disordered gambling among adolescents. However, strong associations among GRCS subscales, as well as the small amount of variance in problem gambling accounted for by specific GRCS subscales, call into question the multidimensionality of the GRCS when used with adolescents.     

On credible coalitional deviations by prudent players

In this paper we first explore the predictive power of the solution notion called conservative stable standard of behaviour (CSSB), introduced by Greenberg (The theory of social situations, 1990), in environments with farsighted players (as modelled in Xue, Econ Theory 11:603–627, 1998) as intuitively it is quite nice. Unfortunately, we find that CSSB has a number of undesirable properties: most importantly, it makes vacuous predictions for most natural social environments. Therefore, we introduce an intuitive refinement of this solution which we call conservative stable weak predictor. In settings of proper voting games, we explore some existence properties of this new solution and also show that it may not be unique. However, unfortunately, this refinement may also lead to non-intuitive vacuous predictions.     

The Internalization of the “Father” Object Among Young Men and Its Relation to Separation–Individuation Patterns, Anxiety and Depression

While the father’s influence on his offspring’s personalities and well-being has historically been neglected, literature on this topic has recently been accumulating. The father’s influence is touches upon numerous practical and ethical implications for social work, psychotherapy, and psychodiagnosis. The present study draws from Mahler’s (Mahler, Separation individuation. The selected papers of Margaret S. Mahler, 1963, 1967, 1974; Mahler et al., The psychological birth of the human infant. Symbiosis and individuation, 1975) theory of the psychological birth of the child and offers a novel focus on the pivotal internal representation of the father. According to this theory, hindered developmental processes lead to depression and anxiety. 130 students took part in the current study, in which the internal father object was examined with regard to separation–individuation processes, and the levels of anxiety and depression were recorded. The study’s results show a significant negative relation between the quality of the paternal object and levels of anxiety and depression. A theoretical model was constructed to illustrate the similarities and discrepancies in the development of depression and anxiety in light of the father object as mediated by the separation–individuation processes that were examined.     

Physical activity and patient-reported outcomes: enhancing impact

Physical activity (PA) is beneficial for cancer survivors across the cancer trajectory. Evidence indicates physical and psychosocial benefits, and ultimately, enhanced overall quality of life, for individuals who are more versus less active (Semin Oncol Nurs 23:285–296, 2007; Cancer Epidemiol Biomarkers Prev 14:1672–1680, 2005; J Cancer Surviv 4:87–100, 2010). A number of recent reviews have been conducted that examine different patient or survivor populations and outcomes. In general, the findings across the reviews reveal potential positive associations between exercise (structured activity one engages in for the purposes of enhancing health-related fitness outcomes) and PA (any physical movement, including lifestyle types of activity) with both physical and psychological outcomes. It is important to note, however, that depending on the nature of the review and the types of studies included in the review, the strength of the findings (i.e., effect size) vary. Despite this overwhelmingly positive evidence for the benefits of PA, activity levels are very low among cancer survivors, with one study reporting only 22 % of survivors as active enough to achieve health benefits (Cancer 112(11):2475–2482, 2008). This suggests that we must begin to better understand the factors that impact the uptake and maintenance of PA among cancer survivors. These potential factors are important when considering the patient-reported outcomes to assess and can include timing (i.e., during or after treatment completion), characteristics of the cancer diagnosis and subsequent treatments (i.e., early vs. late stage cancers), and characteristics of the individual (i.e., older vs. younger).     

Are Shocks to Real Output Permanent or Transitory? Evidence from a Panel of “Asean” Per Capita GDP Data

Since economic theory provides reasons for nonlinearity in economic variables due to frictions/distortions in the economy, the use of linear unit root tests to examine the nonstationary properties of per-capita GDP (PCGDP) may provide misleading results. With this background we have analyzed the mean reversion properties of per capita real GDP of Association of South East Asian Nations (ASEAN) countries (for the period 1950–2010) using the recently developed Ucar and Omaga (Econ Lett 104:5–8, 2009) nonlinear panel unit root test. The results indicate that the PCGDP of ASEAN countries are nonlinear process and are stationary.     

Distorted Lorenz curves: models and comparisons

The economic literature contains many parametric models for the Lorenz curve. A number of these models can be obtained by distorting an original Lorenz curve $L$ by a function $h$ , giving rise to a distorted Lorenz curve ${\widetilde{L}}=h\circ L$ . In this paper, we study, in a unified framework, this family of curves. First, we explore the role of these curves in the context of the axiomatic structure of Aaberge (2001) for orderings on the set of Lorenz curves. Then, we describe some particular models and investigate how changes in the parameters in the baseline Lorenz curve $L$ affect the transformed curve ${\widetilde{L}}$ . Our results are stated in terms of preservation of some stochastic orders between two Lorenz curves when both are distorted by a common function.     

Utilitarianism and discrimination

Since Becker (1971), a common argument against asymmetric norms that promote minority rights over those of the majority is that such policies reduce total welfare. While this may be the case, we show that there are simple environments where aggregate sum of individual utilities is actually maximized under asymmetric norms that favor minorities. We thus maintain that without information regarding individual utilities one cannot reject or promote segregation-related policies based on utilitarian arguments.     

An axiomatization of success

In this paper we give an axiomatic characterization of a family of measures of success defined by Laruelle and Valenciano (Soc Choice Welf 27:171–197, 2005) for voting rules.     

Helping Youth Transition into an Alternative Residential School Setting: Exploring the Effects of a Wilderness Orientation Program on Youth Purpose and Identity Complexity

This mixed-methods study examines the relationship between adolescent identity complexity (Clin Social Work J 21(1):11–24 1991) and youth purpose related to participation in a wilderness experience program at an alternative, residential boarding school in Colorado. Students in this study (N = 55) completed an adapted version of the Self-Worth Index (Ment Health Relig Cult 4(2):103–108 2001) before and after participation in a wilderness experience program. Youth in the study also completed a pre- and post-test eight-item index measuring identity complexity, with each item assessed on a five-point Likert scale. Likewise, qualitative, face-to-face interviews with each student were conducted to triangulate findings and further explore the impact of the wilderness program on identity complexity and youth purpose for youth labeled “high risk.” Data analysis revealed that the wilderness program contributed to students’ positive sense of identity and purpose in their lives, and helped them transition into the residential school culture successfully.     

No externalities: a characterization of efficiency and incentive compatibility with public goods

We show that efficient anonymous incentive compatible (dominant strategy) mechanisms for public goods eliminate externalities, i.e., each individual is unable to change the welfare of anyone else. The characterization is used to derive existence and non-existence results for models with a finite number of individuals and to explain existence results in the continuum. A similar characterization and conclusions are demonstrated for private goods in (J Econ Theory 85:169–225, 1999). However, unlike private goods, elimination of externalities with public goods implies that individuals cannot change the outcome. Hence, such mechanisms provide only weak incentives for truth-telling.