Bivariate return periods via 2-Copulas

In this paper we provide a very general framework for studying the return periods of random events depending upon the joint behaviour of two non-independent random variables. We show that using the 2-Copula describing the dependence features of the underlying joint distribution may greatly simplify the calculations, and even yield analytical expressions for the isolines of the return periods. In addition, we introduce the new definitions of primary and secondary return periods, which provide relevant information for performing risk-assessment. The results obtained are extremely important in the applications, where the return period is fundamental during the design phase.     

CYCLICAL TAX ENFORCEMENT

We wonder whether tax enforcement varies along the economic cycle and aim at answering that question from a positive perspective by means of survey data for the Spanish case (1994–2015). According to a fiscal capacity argument, tax enforcement might be stronger in times of crisis (counter-cyclical), but if the tax administration prioritizes taxpayers' welfare over public revenue, enforcement might be slacker (procyclical). We find tax enforcement is not immune to the state of the economy. In particular, it presents a prevailing counter-cyclical trend, but in presence of a severe economic crisis it turns out to be procyclical. (JEL D78, H12, H26, H83)     

Association of Problem Gambling with Type of Gambling Among Italian General Population

The origin of gambling disorders is uncertain; however, research has shown a tendency to focus on specific types of games as a potential important risk factor. The principal aim of this study is to examine the relationships between types of gambling practices and gambling disorder. The data were extracted from IPSAD-Italia^® 2010–2011 (Italian Population Survey on Alcohol and other Drugs), a survey among the Italian general population which collects socio-cultural information, information about the use of drugs, legal substances and gambling habits. In order to identify the “problem gambler” we used the Problem Gambling Severity Index. Three groups are considered in this analysis: no-risk gamblers, low-risk gamblers, moderate-risk/problem gamblers. Type of gambling practice was considered among two types of gambler: one-game players and multi-games players. 1.9 % of multi-game players were considered problem gamblers, only 0.6 % of one-game players were problem gamblers (p < 0.001). The percentage of players who were low and moderate-risk gamblers was approximately double among multi-game players, with 14.4 % low-risk and 5.8 % moderate-risk; compared with 7.7 % low-risk and 2.5 % moderate risk among one-game players. Results of ordinal logistic regression analysis confirmed that higher level of gambling severity was associated with multi-game players (OR = 2.23, p < 0.0001). Video-poker/slot-machines show the highest association with gambling severity among both one-game players and multi-game players, with scores of OR equal to 4.3 and 4.5 respectively. These findings suggest a popular perception of risk associated with this type of gambling for the development of gambling problems.     

Sensing the Bike: Creating a Collaborative Understanding of a Multi‐Sensorial Experience in MotoGP Racing

This article concerns the analysis of work interaction of a motorcycle racing team during pre‐season tests, drawing on ethnomethodology, and conversation analysis to explicate the ways in which the manager and the driver collaborate, through everyday gestures and language, to create a shared understanding of the bike's mechanical issues and disambiguate the driver's accounts of the bike's performance. We report on a set of video‐recorded encounters between the manger and the driver, examining how the multi‐sensorial experience of the driver is recollected and understood by team members, while overcoming interactional constraints imposed by the unique professional setting.     

The Difficulties of Interculturalism

One can describe three hurdles on the road to building a multi‐ethnic society: under‐estimating the problem; the conflict between the need to respect a culture and the need to open it to another culture; the existence of unacceptable aspects of a specific culture in a universalistic framework. The article describes ways to overcome these difficulties: (a) a gradual process from multiculturalism towards interculturalism; (b) certain minimum conditions must be met at the material level (home, work, etc); (c) to encourage individuals and communities to lessen their physical and psychological distance and to show each other mutual respect (to which education can provide a contribution through the teaching of social sciences).