Suchergebnisse

New challenges arise in data visualization when the research involves a sizable database. With many data points, classical scatterplots are non-informative due to the cluttering of points. On the contrary, simple plots, such as the boxplot that are of limited use in small samples, offer great potential to facilitate group comparison in the case of an extensive sample. This article presents exploratory data analysis methods useful for inspecting variation across groups in crucial variables and detecting heterogeneity. The exploratory data analysis methods (introduced by Tukey in his seminal book of 1977) encompass a set of statistical tools aimed to extract information from data using simple graphical tools. In this article, some of the exploratory data analysis methods like the boxplot and scatterplot are revisited and enhanced using modern graphical computational devices (as, for example, the heat-map) and their use illustrated with Spanish Social Security data. We explore how earnings vary across several factors like age, gender, type of occupation, and contract, and in particular, the gender gap in salaries is visualized in various dimensions relating to the type of occupation. The exploratory data analysis methods are also applied to assessing and refining competing regressions by plotting residuals-versus-fitted values. The methods discussed should be useful to researchers to assess heterogeneity in data, across-group variation, and classical diagnostic plots of residuals from alternative models fits. JEL CLASSIFICATION: C55; J01; J08; Y10; C80

We extend standard methodology for multigroup mean and covariance structure (MACS) analysis to the case where assessment of across-group variation of model parameters is the focus of the study and the data deviate from standard assumptions. The proposed methods are applied to analyze an accounting profitability database covering more than 100,000 firms in the 15 European Union (EU) countries in the period 1999 to 2003. A multivariate model with permanent and dynamic latent components of profitability is used to assess across-country variation of firm level profitability and persistence. We show that there are substantial differences among these countries, despite the partial integration of their economies. Estimation of supplementary parameters are proposed as a way to characterize persistence in each country, as well as across-group variation of model parameters. This methodology is more widely applicable in international organizational research.

We extend standard methodology for multigroup mean and covariance structure (MACS) analysis to the case where assessment of across-group variation of model parameters is the focus of the study and the data deviate from standard assumptions. The proposed methods are applied to analyze an accounting profitability database covering more than 100,000 firms in the 15 European Union (EU) countries in the period 1999 to 2003. A multivariate model with permanent and dynamic latent components of profitability is used to assess across-country variation of firm level profitability and persistence. We show that there are substantial differences among these countries, despite the partial integration of their economies. Estimation of supplementary parameters are proposed as a way to characterize persistence in each country, as well as across-group variation of model parameters. This methodology is more widely applicable in international organizational research. ; The authors disclosed receipt of the following financial support for the research and/or authorship of this article: Partially supported by grants SEJ2006–13537 and PR2007–0221 from the Spanish Ministry of Science and Technology and by grants GV05/125 and BEST/2008/038 from the Generalitat Valenciana (Spain).

Amid the tensions created by the secession push in Catalonia (Spain), an important conflicting issue has been the "immersion linguistic educational system", in which the Catalan language has precedence throughout all of the primary and secondary school curricula. Here, we present an analysis of a survey (n = 1002) addressing features of linguistic and political opinion profiles with reference to the mother language and feelings of national identity. The results show that the mother language is a factor that differentiated the participants in terms of common linguistic uses and opinions about the "immersion educational system". These results were confirmed when segmenting respondents via their feelings of national self-identification. The most distinctive political opinions consisted of either asserting or denying the damage to social harmony produced by the secession campaign. Overall, the findings show that a major fraction of the Catalonian citizenry is subjected to an education system that does not meet their linguistic preferences. We discuss these findings, connecting them to an ethnolinguistic divide based mainly on mother language (Catalan vs. Spanish) and family origin—a complex frontier that has become the main factor determining alignment during the ongoing political conflict.

During the last decade, the Catalonian secessionist challenge induced a chronic crisis within Spain's politics that does not offer hints of a viable arrangement. The rapidly escalating demands for secession ran almost in parallel with the accentuation of the economic recession that followed the disruption of the world financial system in 2008–2010. Such secession claims reached maximums during 2012–2014, attaining support levels of nearly 50% of citizenry in favour of independence. These figures subsequently diminished a bit but remained close to that level until today. Despite the coincident course, previous studies had shown that the impact of economic hardships was not a major factor in explaining the segregation urgencies, connecting them instead to triggers related to internecine political struggles in the region: Harsh litigations that resulted in an abrupt polarization along nationalistic features in wide segments of the population. In this longitudinal analysis based on the responses of 88,538 individuals through a regular series of 45 official surveys, in the period 2006–2019, we show that economic factors did play a role in the secessionist wave. Our findings showed that the main idiomatic segmentation (Catalan vs. Spanish, as family language) interacted with economic segmentations in inducing variations on national identity feelings that resulted in erosions of the dual CatSpanish identity. Moreover, our findings also showed that the more privileged segments of Catalonian citizenry where those that mostly supported secession, whereas poorer and unprotected citizenry was clearly against it. All the data points to the conclusion that the secessionist challenge was, in fact, a rebellion of the wealthier and well-situated people.

During the last decade, the Catalonian secessionist challenge induced a chronic crisis within Spain's politics that does not offer hints of a viable arrangement. The rapidly escalating demands for secession ran almost in parallel with the accentuation of the economic recession that followed the disruption of the world financial system in 2008-2010. Such secession claims reached maximums during 2012-2014, attaining support levels of nearly 50% of citizenry in favour of independence. These figures subsequently diminished a bit but remained close to that level until today. Despite the coincident course, previous studies had shown that the impact of economic hardships was not a major factor in explaining the segregation urgencies, connecting them instead to triggers related to internecine political struggles in the region: Harsh litigations that resulted in an abrupt polarization along nationalistic features in wide segments of the population. In this longitudinal analysis based on the responses of 88,538 individuals through a regular series of 45 official surveys, in the period 2006-2019, we show that economic factors did play a role in the secessionist wave. Our findings showed that the main idiomatic segmentation (Catalan vs. Spanish, as family language) interacted with economic segmentations in inducing variations on national identity feelings that resulted in erosions of the dual CatSpanish identity. Moreover, our findings also showed that the more privileged segments of Catalonian citizenry where those that mostly supported secession, whereas poorer and unprotected citizenry was clearly against it. All the data points to the conclusion that the secessionist challenge was, in fact, a rebellion of the wealthier and well-situated people.