We conduct a field experiment to show that discrimination in the rental market represents a significant obstacle for the geographical assimilation process by immigrants. We employ the Internet platform to identify vacant rental apartments in different areas of the two largest Spanish cities,...

This paper investigates the effect of disclosing information on the discriminatory behavior against immigrants in the Spanish rental market. We conduct a field experiment where emails are sent showing interest in vacant rental apartments. Fictitious applicants whose names represent different...

This paper investigates the relationship between immigration and the size of the informal or underground economy. Using regional variation for the Spanish provinces we find that the massive immigration wave between 2000 and 2009 is highly correlated to the share of unregistered employment, a...

Purpose – The purpose of the paper is to evaluate the effect of mobbing in workers’ health. Design/methodology/approach – Using a dataset of Spanish workers from the VI Spanish Survey on Working Conditions, the authors identify mobbed and not mobbed workers and use two different health...

GARCH volatilities depend on the unconditional variance, which is a non-linear function of the parameters. Consequently, they can have larger biases than estimated parameters. Using robust methods to estimate both parameters and volatilities is shown to outperform Maximum Likelihood procedures.

In this paper we consider different periodic extensions of regression models with autoregressive fractionally integrated moving average disturbances for the analysis of daily spot prices of electricity. We show that day-of-the-week periodicity and long memory are important determinants for the...

The main goal when fitting GARCH models to conditionally heteroscedastic time series is to estimate the underlying volatilities. It is well known that outliers affect the estimation of the GARCH parameters. However, little is known about their effects when estimating volatilities. In this paper,...

The objective of this paper is to analyze the finite sample performance of two variants of the likelihood ratio test for detecting a level shift in uncorrelated conditionally heteroscedastic time series. We show that the behavior of the likelihood ratio test is not appropriate in this context...

This paper analyzes the effects caused by outliers on the identification and estimation of GARCH models. We show that outliers can lead to detect spurious conditional heteroscedasticity and can also hide genuine ARCH effects. First, we derive the asymptotic biases caused by outliers on the...

Although the main interest in the modelling of electricity prices is often on volatility aspects, we argue that stochastic heteroskedastic behaviour in prices can only be modelled correctly when the conditional mean of the time series is properly modelled. In this paper we consider different...