Influence of Social Media over the Stock Market

This research analyzes investors’ activity through social media and these media's influence over the Chicago Board Options Exchange Market Volatility Index (VIX) using a logit model and a fuzzy‐set qualitative comparative analysis (fsQCA). The logit results show that social media sentiment influences stock markets. Meanwhile, the fsQCA results show that the investors’ profile is important for explaining how social media influence the stock market. Particularly, holding period combined with experience in technical investors contributes to avoiding a raise in market risk, whereas for nontechnical investors message sentiment and experience form the combination that contributes to avoid a raise in market risk.     

Exploring the customer's intention to switch firms: The role of customer‐related antecedents

This study examined the customer‐related antecedents of the customer's intention to switch firms. Customer citizenship behavior was a key element in this study. Scholars have extensively studied the antecedents of customer citizenship behavior. However, the way that customer citizenship behavior relates to other attitudinal variables and the intention to switch has scarcely been analyzed. The proposed hypotheses were verified using partial least squares variance‐based structural equation modeling applied to 947 users of beauty care service firms in five countries. The results suggest that customer citizenship behavior is an antecedent of satisfaction, trust, and attitudinal loyalty. Two of these variables influence customers’ intentions to abandon relationships with the service provider. The implications of these findings enhance managers’ and scholars’ understanding of the determinants of customers’ intentions to switch firms.     

Motivation in the teaching of Physical Education according to the Achievement Goal Theory: methodological considerations

The present study shows how the evaluation of sport motivation according to Achievement Goal Theory is different if the criteria used are predominant goal orientation or motivational profile combination, as well as presenting its relationship with other variables such as the amount of sport practise or the level of competition and success achieved. Seventy two men and women participated, all students of Physical Educational and Sport Science, completing the Questionnaire on Motivational Orientation in Sport ((Guivernau and Duda, Revista de Psicología del Deporte, 5, 1994) a Spanish adaptation of the Task and Ego Orientation in Sport Questionnaire, TEOSQ, (Duda, J Sport Exerc Psychol, 11, 1989)). The results showed the existence of different motivational relationships with variables of the practise of sport, depending on the type of profile used. Finally, the practical implications of these findings are discussed with respect to the motivational climate generated in the teaching of Physical Education.     

Deposit insurance and bank risk-taking: Evidence from internal loan ratings

We analyze the effect of deposit insurance on the risk-taking behavior of banks in the context of a quasi-natural experiment using detailed credit registry data. Using the case of an emerging economy, Bolivia, which introduced a deposit insurance system during the sample period, we compare the risk-taking behavior of banks before and after the introduction of this system. We find that in the post-deposit insurance period, banks are more likely to initiate riskier loans (i.e., loans with worse internal ratings at origination). These loans carry higher interest rates and are associated with worse ex-post performance (i.e., they have higher default and delinquency rates). Banks do not seem to compensate for the extra risk by increasing collateral requirements or decreasing loan maturities. We also find evidence that the increase in risk-taking is due to the decrease in market discipline from large depositors. Finally, differences between large (too-big-to-fail) and small banks diminished in the post-deposit insurance period.     

The economic return on education for hotel managers

This paper estimates econometrically the economic return on education among Portuguese hotels managers, based on a survey carried out in 2003. A Mincerian human capital model is estimated. The main findings indicate that the rate of return is in the range 12–15%, signifying that Portuguese hotel managers are better paid than the average population. The results also indicate that in this sector, the return on education does not depend on the number of employees in the hotels in which the individual works, nor on the region where the hotel is situated. Gender has an impact in this labour market. Being a foreign manager has a positive impact on earnings, as is also the case for partners in the hotel company. The research draws the attention of hotel managers to the need to acquire human capital to enable them to perform their tasks effectively in a globalised world. Copyright © 2007 John Wiley & Sons, Ltd.     

Process innovations and firm productivity growth

This article analyses the effect of process innovations on firm total factor productivity growth, explicitly considering the impact of firm size on the nature of this relationship. In particular, we analyse whether firm size affects the life span of the impact of process innovations on productivity growth. The data are drawn from a Spanish survey of manufacturing firms over the period 1991–1998. We use a fully non-parametric methodology based on the concept of stochastic dominance. Our results show that the implementation of process innovations produces an extra productivity growth both for large and small firms. However, this productivity growth is more persistent for large than for small firms.     

Editors’ note

Portuguese Economic Journal -     

Feature selection methods involving support vector machines for prediction of insolvency in non‐life insurance companies

We propose two novel approaches for feature selection and ranking tasks based on simulated annealing (SA) and Walsh analysis, which use a support vector machine as an underlying classifier. These approaches are inspired by one of the key problems in the insurance sector: predicting the insolvency of a non‐life insurance company. This prediction is based on accounting ratios, which measure the health of the companies. The approaches proposed provide a set of ratios (the SA approach) and a ranking of the ratios (the Walsh analysis ranking) that would allow a decision about the financial state of each company studied. The proposed feature selection methods are applied to the prediction the insolvency of several Spanish non‐life insurance companies, yielding state‐of‐the‐art results in the tests performed. Copyright © 2005 John Wiley & Sons, Ltd.     

Firms’ performance under different bankruptcy systems: a Europe–USA empirical analysis

This study empirically analyses the effect that the bankruptcy law has on firms’ performance based on its financial situation. To do this, we considered the different types of efficiency and their influence on firms’ value. The study was carried out for Germany, Spain, the United States, France and the United Kingdom. We applied System‐GMM estimation to dynamic panel data. The main results show that under creditor‐oriented systems, there is a decrease in the value of both financially distressed firms and those filing for bankruptcy.