Why should I believe this? Deciphering the qualities of a credible online customer review

Online customer reviews have been shown to have a powerful impact on the sales of a given product or service. However, the qualities of a ‘credible’ online customer review are still subject to debate. Existing research has highlighted the potential influence of a range of factors on the credibility of an online customer review, but relies heavily on quantitative methods and a ‘top down’ approach. In turn, this can reduce our understanding of the influence of these factors into merely discerning whether one pre-determined factor is more influential than another is. This paper adopted a ‘bottom up’ thematic analysis of individual qualitative interviews with a purposeful sample of consumers who regularly utilised online customer reviews. The findings uncovered a range of factors that influenced the credibility of an online customer review that were attached to a reader’s personal experience and to the content of a specific review, and inferred the existence of a reciprocal relationship between the constructs of review helpfulness and review credibility.     

Technological spillovers from multinational firms

This paper aims to identify genuine technological spillovers from multinational firms (MNEs). To this end, we use data on R&D from MNEs to measure spillovers, while most of the existing literature uses output to measure the foreign presence in an industry (what we call output-based spillovers). In line with the existing literature, we distinguish between horizontal spillovers (i.e., intra-industry linkages) and vertical spillovers (i.e., backward—or downstream—and forward—or upstream—inter-industry linkages). Our results show that the three types of technological spillovers from MNEs are positive, with the horizontal spillovers the larger ones, followed by backward spillovers. The effect of forward spillovers is much smaller in magnitude. Moreover, we find that not controlling for industry size (i.e., technological spillovers from all firms in an industry) leads to underestimating both horizontal and backward spillovers from MNEs, and to overestimating forward spillovers from MNEs. Finally, we find that the distinction between technological and output-based spillovers is of great relevance. The size of backward technological spillovers is approximately 44% of the size of output-based backward spillovers, while for horizontal spillovers both types of spillovers are quite similar. Importantly, output-based forward spillovers are negative while technological forward spillovers are positive.     

Monetary Union Viability: A Criterion Proposal

We propose a model that represents the dynamic behaviour of a monetary union comprising two countries whose natural interest rates are initially unequal. This initial disparity and the subsequent application of a common monetary policy generate different national inflation rates and lead to losses of competitiveness, foreign deficits, and the indebtedness of one country with respect to the other. We propose as a viability criterion for the modelled monetary union a combination of non‐explosive foreign debt and the ability of the central bank to neutralize the contracting effects of taking on additional debt to avoid falling into a liquidity trap.     

Exchange Rate,External Orientation of Firms and Wage Adjustment

We estimate the effect of exchange rate movements on firm‐level wages, using a representative panel of Italian manufacturing firms. We show that the direction and size of wage adjustment is shaped by the international exposure of each firm on both the sale and cost side of the balance sheet, similar to the response of employment documented in (Nucci and Pozzolo, Journal of International Economics 2010; 82 : 112.). Through the revenue side, wages tend to rise after a currency depreciation and the effect is more pronounced the higher is the firm's exposure to sales from exports. Through the expenditure side, a depreciation induces a cut in the firm's wages, and the effect is larger the higher is the incidence of imported inputs in total production costs. For a given degree of external orientation, both these effects are larger for firms with a lower market power. Moreover, we document that the effect of exchange rates on wages is shaped by the extent of sectoral import penetration in the domestic market.     

Optimisation of water procurement decisions in an irrigation district: the role of option contracts

Water supply instability is one of the main risks faced by irrigation districts and farmers. Water procurement decision optimisation is essential in order to increase supply reliability and reduce costs. Water markets, such as spot purchases or water supply option contracts, can make this decision process more flexible. We analyse the potential interest in an option contract for an irrigation district that has access to several water sources. We apply a stochastic recursive mathematical programming model to simulate the water procurement decisions of an irrigation district's board operating in a context of water supply uncertainty in south‐eastern Spain. We analyse what role different option contracts could play in securing its water supply. Results suggest that the irrigation district would be willing to accept the proposed option contract in most cases subject to realistic values of the option contract financial terms. Of nine different water sources, desalination and the option contract are the main substitutes, where the use of either depends on the contract parameters. The contract premium and optioned volume are the variables that have a greater impact on the irrigation district's decisions.     

Online and official price indexes: Measuring Argentina's inflation

Prices collected from online retailers can be used to construct daily price indexes that complement official statistics. This paper studies their ability to match official inflation estimates in five Latin American countries, with a focus on Argentina, where official statistics have been heavily criticized in recent years. The data were collected between October 2007 and March 2011 from the largest supermarket in each country. In Brazil, Chile, Colombia, and Venezuela, online price indexes approximate both the level and main dynamics of official inflation. By contrast, Argentina's online inflation rate is nearly three times higher than the official estimate.     

Strategic debt with multi-task technologies

In this paper it is shown that when employees have ex post bargaining power, the entrepreneur will try to avoid technologies that are based on a large number of complementary tasks. We demonstrate that the entrepreneur can shelter profit from the employees' rent-seeking behaviour by raising debt. Moreover, the strategic use of debt financing can favour the adoption of technologies that rely on synergies. JEL Classification: G31, J30, L20
Dette stratégique en présence de technologies impliquant plusieurs tâches. Ce mémoire montre que quand les employés ont un pouvoir de négociation ex post, l'entrepreneur va tenter d'éviter les technologies qui sont basées sur un grand nombre de tâches complémentaires. On montre que l'entrepreneur peut protéger ses profits des activités de chasse aux rentes des employés en accroissant sa dette. De plus, l'utilisation stratégique du financement par la dette peut favoriser l'adoption de technologies qui dépendent de synergies.     

Gender Pay and Occupational-Attainment Gaps in Costa Rica and El Salvador: A Relative Comparison of the Late 1980s

This study investigates gender occupational attainment and earnings differentials in El Salvador and Costa Rica at the end of the 1980s. During this decade, El Salvador experienced a civil war and an economic depression. Costa Rica was also mired in a recession in the early 1980s, but programs adopted in the mid-1980s led to rapid economic recovery. It is found that the gender pay gap in El Salvador is 30.4% and 23.6% in Costa Rica. The intercountry difference in the gap disappears after accounting for high gender differences in occupational attainment and hours worked in El Salvador.