Fixed T dynamic panel data estimators with multifactor errors

This article analyzes a growing group of fixed T dynamic panel data estimators with a multifactor error structure. We use a unified notational approach to describe these estimators and discuss their properties in terms of deviations from an underlying set of basic assumptions. Furthermore, we consider the extendability of these estimators to practical situations that may frequently arise, such as their ability to accommodate unbalanced panels and common observed factors. Using a large-scale simulation exercise, we consider scenarios that remain largely unexplored in the literature, albeit being of great empirical relevance. In particular, we examine (i) the effect of the presence of weakly exogenous covariates, (ii) the effect of changing the magnitude of the correlation between the factor loadings of the dependent variable and those of the covariates, (iii) the impact of the number of moment conditions on bias and size for GMM estimators, and finally (iv) the effect of sample size. We apply each of these estimators to a crime application using a panel data set of local government authorities in New South Wales, Australia; we find that the results bear substantially different policy implications relative to those potentially derived from standard dynamic panel GMM estimators. Thus, our study may serve as a useful guide to practitioners who wish to allow for multiplicative sources of unobserved heterogeneity in their model.     

Thematization in everyday life: a critical approach

This paper presents an examination of some of the ways in which social criticism can be developed on the basis of the analysis of everyday life in modern societies. An attempt is made to combine the results of phenomenological (Schutz), ethnomethodological (Garfinkel), and dialectical (Kosik) approaches to the everyday world as the world-taken-for-granted, with the study, founded on semiological theory, of social images and the ideological elements implicit in them. At the centre of the discussion lies the mechanism of thematization by which the subjects assign predicates to persons, objects and events in a given social context.     

Cross-Sectional Dependence in Panel Data Analysis

This article provides an overview of the existing literature on panel data models with error cross-sectional dependence (CSD). We distinguish between weak and strong CSD and link these concepts to the spatial and factor structure approaches. We consider estimation under strong and weak exogeneity of the regressors for both T fixed and T large cases. Available tests for CSD and methods for determining the number of factors are discussed in detail. The finite-sample properties of some estimators and statistics are investigated using Monte Carlo experiments.     

Immigrant Populations and the Labour Market in Greece at the Beginning of the Twenty‐First Century

Our purpose in undertaking this research is to methodically map the labour market circumstances of the main immigrant groups in Greece. We classify all of the Districts of Greece into three categories (Diverse, Mixed and Unmixed) according to the ethnic composition of each District. We measure how the employment status of the immigrants varies (1) according to the ethnic group and sex of the immigrant, and (2) according to the ethnic composition and economic structure of a District. In general, the majority of immigrants exhibit lower unemployment and higher economic activity rates than the indigenous Greeks. Three immigrant groups (Albanians, Bulgarians and “Other”), which make up two‐thirds of the foreign‐born population of Greece, have lower unemployment rates than the national average, and lower rates than Greeks as well. The poorest labour market outcomes are observed in Unmixed and Mixed Districts, whereas Diverse Districts are better off. At the regional level, the most disadvantaged Geographical Department is the Ionian Islands, since it presents the highest unemployment rates for the general population for both sexes. With regard to sex‐differential unemployment across immigrant groups, we found that women exhibit higher unemployment than men in almost every ethnic group.     

DIVERSITY IN ECONOMICS: AN ANALYSIS OF JOURNAL QUALITY PERCEPTIONS

It is still debatable whether scientific diversity is a virtue or a disadvantage for the development of a discipline. Nonetheless, diversity among scientists with respect to their journal quality perceptions plays an important role in hiring and promotion decisions. In this article we examine the degree of diversity within economics based on the journal quality perceptions of 2,103 AEA economists worldwide. Specifically, we empirically test for factors that might explain differences in an economist's journal quality perceptions. These factors include an economist's geographic origin, school of thought, journal affiliation, field of specialization and research orientation. Indeed, we find that a significant degree of diversity in journal quality perceptions exists between economists that belong in different subgroups. These results might explain the frequent debates in tenure and promotion committees where journal standings are used for the evaluation of a researcher's output. (JEL: A12, D12)     

Understanding the development of differentiated instruction for students with and without disabilities in co-taught classrooms

Differentiation has gained international attention as a strategy associated with responsive teaching, and as a means for ensuring access to the curriculum for all pupils. This study investigates the development of differentiated instruction in 34 Greek co-taught classrooms. The aim is to explore how co-teachers understand the term ‘differentiated instruction’, and to identify the conditions surrounding its implementation as an inclusive strategy. Sixty-eight semi-structured interviews and 57 unstructured narrative observations were implemented with mainstream and special education co-teachers. We suggest that co-teachers understood differentiated instruction as a ‘child’s deficit-oriented activity’ for students with disabilities and not as a ‘context-oriented approach’ for all students. Co-teachers attributed the limited differentiated instruction observed to several contextual factors. However, we argue that the understanding of disability through the medical model and Foucault’s ‘medical gaze’ results in the construction of differentiated instruction as a remedial approach and, by extension, its limited use in mainstream classrooms.