Fighting vacation rental tax evasion through warnings to potential evaders

This paper uses differences-in-differences to analyze the effectiveness of messages sent by the Spanish Tax Agency to deter tax evasion by owners of vacation rentals. The results suggest that these messages were effective in the aggregate, as there was an increase both in the declared amount of such income (6–8.5%, depending on the line item under which it is declared) and in the number of filers (29.7–64.2%), and this effectiveness became more marked over time. Notably, there was more response to the intervention from the self-employed. However, in some collectives, the intervention produced the opposite of the intended effect.     

Methods and Tools for Bayesian Variable Selection and Model Averaging in Normal Linear Regression

In this paper, we briefly review the main methodological aspects concerned with the application of the Bayesian approach to model choice and model averaging in the context of variable selection in regression models. This includes prior elicitation, summaries of the posterior distribution and computational strategies. We then examine and compare various publicly available R‐packages, summarizing and explaining the differences between packages and giving recommendations for applied users. We find that all packages reviewed (can) lead to very similar results, but there are potentially important differences in flexibility and efficiency of the packages.     

Income Shifting in the Spanish Dual Income Tax*

Based on a model of behavioural response to taxes, and using the Taxpayers Panel from the Instituto de Estudios Fiscales for the period 1999–2009, we analyse whether the dual nature of the Spanish personal income tax (PIT), reinforced by the 2007 reform, has influenced taxpayers’ behaviour, causing them to convert part of their ‘general income’ (from labour, real estate or economic activities) into ‘savings income’ (from movable capital or capital gains). We also extend the analysis of income shifting and study whether Spanish taxpayers also responded to the different tax treatments given to the two types of savings income (from movable capital and capital gains) until 2007, transforming savings income from one type to the other. The results of our study demonstrate three facts. First, Spanish taxpayers did respond to the different tax rates, shifting income from the general base to different forms of savings, especially capital gains. The highest‐income individuals and the self‐employed and business owners are the groups where this behaviour was most marked. Second, the self‐employed and business owners also turned income from movable assets into capital gains, guided by their different tax rates. And third, we find signs of ‘anticipation’ and ‘learning’ effects caused by the 2007 tax reform. We believe that the results obtained will enrich the growing literature on income shifting.     

What Does Objective Mean in a Dirichlet‐multinomial Process?

The Dirichlet‐multinomial process can be seen as the generalisation of the binomial model with beta prior distribution when the number of categories is larger than two. In such a scenario, setting informative prior distributions when the number of categories is great becomes difficult, so the need for an objective approach arises. However, what does objective mean in the Dirichlet‐multinomial process? To deal with this question, we study the sensitivity of the posterior distribution to the choice of an objective Dirichlet prior from those presented in the available literature. We illustrate the impact of the selection of the prior distribution in several scenarios and discuss the most sensible ones.     

Hospital Servicescape Design for Inpatient Wellbeing

Wellbeing of end-users is a growing concern in services research. The growth of transformative service research and evidence-based design highlights the need to focus on hospital patients to improve their state of wellbeing. This study combines both fields to propose a conceptual model for the hospital perceived servicescape. The effect of the servicescape on inpatient wellbeing is tested using a quantitative survey conducted with 372 inpatients in Egypt. Results indicate that hospital servicescapes should include the aspects of art and visuals; plants and greenery; safety and hygiene; patient single rooms and atmosphere; and signage and way-finding.